| // Copyright (c) 2015-2016 The Khronos Group Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // Validation tests for Control Flow Graph |
| |
| #include <array> |
| #include <functional> |
| #include <sstream> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "gmock/gmock.h" |
| #include "source/spirv_target_env.h" |
| #include "source/val/validate.h" |
| #include "test/test_fixture.h" |
| #include "test/unit_spirv.h" |
| #include "test/val/val_fixtures.h" |
| |
| namespace spvtools { |
| namespace val { |
| namespace { |
| |
| using ::testing::HasSubstr; |
| using ::testing::MatchesRegex; |
| |
| using ValidateCFG = spvtest::ValidateBase<spv::Capability>; |
| using spvtest::ScopedContext; |
| |
| std::string nameOps() { return ""; } |
| |
| template <typename... Args> |
| std::string nameOps(std::pair<std::string, std::string> head, Args... names) { |
| return "OpName %" + head.first + " \"" + head.second + "\"\n" + |
| nameOps(names...); |
| } |
| |
| template <typename... Args> |
| std::string nameOps(std::string head, Args... names) { |
| return "OpName %" + head + " \"" + head + "\"\n" + nameOps(names...); |
| } |
| |
| /// This class allows the easy creation of complex control flow without writing |
| /// SPIR-V. This class is used in the test cases below. |
| class Block { |
| std::string label_; |
| std::string body_; |
| spv::Op type_; |
| std::vector<Block> successors_; |
| |
| public: |
| /// Creates a Block with a given label |
| /// |
| /// @param[in]: label the label id of the block |
| /// @param[in]: type the branch instruction that ends the block |
| explicit Block(std::string label, spv::Op type = spv::Op::OpBranch) |
| : label_(label), body_(), type_(type), successors_() {} |
| |
| /// Sets the instructions which will appear in the body of the block |
| Block& SetBody(std::string body) { |
| body_ = body; |
| return *this; |
| } |
| |
| Block& AppendBody(std::string body) { |
| body_ += body; |
| return *this; |
| } |
| |
| /// Converts the block into a SPIR-V string |
| operator std::string() { |
| std::stringstream out; |
| out << std::setw(8) << "%" + label_ + " = OpLabel \n"; |
| if (!body_.empty()) { |
| out << body_; |
| } |
| |
| switch (type_) { |
| case spv::Op::OpBranchConditional: |
| out << "OpBranchConditional %cond "; |
| for (Block& b : successors_) { |
| out << "%" + b.label_ + " "; |
| } |
| break; |
| case spv::Op::OpSwitch: { |
| out << "OpSwitch %one %" + successors_.front().label_; |
| std::stringstream ss; |
| for (size_t i = 1; i < successors_.size(); i++) { |
| ss << " " << i << " %" << successors_[i].label_; |
| } |
| out << ss.str(); |
| } break; |
| case spv::Op::OpLoopMerge: { |
| assert(successors_.size() == 2); |
| out << "OpLoopMerge %" + successors_[0].label_ + " %" + |
| successors_[0].label_ + "None"; |
| } break; |
| |
| case spv::Op::OpReturn: |
| assert(successors_.size() == 0); |
| out << "OpReturn\n"; |
| break; |
| case spv::Op::OpUnreachable: |
| assert(successors_.size() == 0); |
| out << "OpUnreachable\n"; |
| break; |
| case spv::Op::OpBranch: |
| assert(successors_.size() == 1); |
| out << "OpBranch %" + successors_.front().label_; |
| break; |
| case spv::Op::OpKill: |
| assert(successors_.size() == 0); |
| out << "OpKill\n"; |
| break; |
| default: |
| assert(1 == 0 && "Unhandled"); |
| } |
| out << "\n"; |
| |
| return out.str(); |
| } |
| friend Block& operator>>(Block& curr, std::vector<Block> successors); |
| friend Block& operator>>(Block& lhs, Block& successor); |
| }; |
| |
| /// Assigns the successors for the Block on the lhs |
| Block& operator>>(Block& lhs, std::vector<Block> successors) { |
| if (lhs.type_ == spv::Op::OpBranchConditional) { |
| assert(successors.size() == 2); |
| } else if (lhs.type_ == spv::Op::OpSwitch) { |
| assert(successors.size() > 1); |
| } |
| lhs.successors_ = successors; |
| return lhs; |
| } |
| |
| /// Assigns the successor for the Block on the lhs |
| Block& operator>>(Block& lhs, Block& successor) { |
| assert(lhs.type_ == spv::Op::OpBranch); |
| lhs.successors_.push_back(successor); |
| return lhs; |
| } |
| |
| const std::string& GetDefaultHeader(spv::Capability cap) { |
| static const std::string shader_header = |
| "OpCapability Shader\n" |
| "OpCapability Linkage\n" |
| "OpMemoryModel Logical GLSL450\n"; |
| |
| static const std::string kernel_header = |
| "OpCapability Kernel\n" |
| "OpCapability Linkage\n" |
| "OpMemoryModel Logical OpenCL\n"; |
| |
| return (cap == spv::Capability::Shader) ? shader_header : kernel_header; |
| } |
| |
| const std::string& types_consts() { |
| static const std::string types = |
| "%voidt = OpTypeVoid\n" |
| "%boolt = OpTypeBool\n" |
| "%intt = OpTypeInt 32 0\n" |
| "%one = OpConstant %intt 1\n" |
| "%two = OpConstant %intt 2\n" |
| "%ptrt = OpTypePointer Function %intt\n" |
| "%funct = OpTypeFunction %voidt\n"; |
| return types; |
| } |
| |
| INSTANTIATE_TEST_SUITE_P(StructuredControlFlow, ValidateCFG, |
| ::testing::Values(spv::Capability::Shader, |
| spv::Capability::Kernel)); |
| |
| TEST_P(ValidateCFG, LoopReachableFromEntryButNeverLeadingToReturn) { |
| // In this case, the loop is reachable from a node without a predecessor, |
| // but never reaches a node with a return. |
| // |
| // This motivates the need for the pseudo-exit node to have a node |
| // from a cycle in its predecessors list. Otherwise the validator's |
| // post-dominance calculation will go into an infinite loop. |
| // |
| // For more motivation, see |
| // https://github.com/KhronosGroup/SPIRV-Tools/issues/279 |
| std::string str = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| |
| OpName %entry "entry" |
| OpName %loop "loop" |
| OpName %exit "exit" |
| |
| %voidt = OpTypeVoid |
| %funct = OpTypeFunction %voidt |
| |
| %main = OpFunction %voidt None %funct |
| %entry = OpLabel |
| OpBranch %loop |
| %loop = OpLabel |
| OpLoopMerge %exit %loop None |
| OpBranch %loop |
| %exit = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()) << str; |
| } |
| |
| TEST_P(ValidateCFG, LoopUnreachableFromEntryButLeadingToReturn) { |
| // In this case, the loop is not reachable from a node without a |
| // predecessor, but eventually reaches a node with a return. |
| // |
| // This motivates the need for the pseudo-entry node to have a node |
| // from a cycle in its successors list. Otherwise the validator's |
| // dominance calculation will go into an infinite loop. |
| // |
| // For more motivation, see |
| // https://github.com/KhronosGroup/SPIRV-Tools/issues/279 |
| // Before that fix, we'd have an infinite loop when calculating |
| // post-dominators. |
| std::string str = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| |
| OpName %entry "entry" |
| OpName %loop "loop" |
| OpName %cont "cont" |
| OpName %exit "exit" |
| |
| %voidt = OpTypeVoid |
| %funct = OpTypeFunction %voidt |
| %boolt = OpTypeBool |
| %false = OpConstantFalse %boolt |
| |
| %main = OpFunction %voidt None %funct |
| %entry = OpLabel |
| OpReturn |
| |
| %loop = OpLabel |
| OpLoopMerge %exit %cont None |
| OpBranch %cont |
| |
| %cont = OpLabel |
| OpBranchConditional %false %loop %exit |
| |
| %exit = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()) |
| << str << getDiagnosticString(); |
| } |
| |
| TEST_P(ValidateCFG, Simple) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop("loop", spv::Op::OpBranchConditional); |
| Block cont("cont"); |
| Block merge("merge", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) { |
| loop.SetBody("OpLoopMerge %merge %cont None\n"); |
| } |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("loop", "entry", "cont", "merge", |
| std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop; |
| str += loop >> std::vector<Block>({cont, merge}); |
| str += cont >> loop; |
| str += merge; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_P(ValidateCFG, Variable) { |
| Block entry("entry"); |
| Block cont("cont"); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| entry.SetBody("%var = OpVariable %ptrt Function\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps(std::make_pair("func", "Main")) + types_consts() + |
| " %func = OpFunction %voidt None %funct\n"; |
| str += entry >> cont; |
| str += cont >> exit; |
| str += exit; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_P(ValidateCFG, VariableNotInFirstBlockBad) { |
| Block entry("entry"); |
| Block cont("cont"); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| // This operation should only be performed in the entry block |
| cont.SetBody("%var = OpVariable %ptrt Function\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps(std::make_pair("func", "Main")) + types_consts() + |
| " %func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> cont; |
| str += cont >> exit; |
| str += exit; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| HasSubstr("All OpVariable instructions in a function must be the " |
| "first instructions in the first block")); |
| } |
| |
| TEST_P(ValidateCFG, BlockSelfLoopIsOk) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop("loop", spv::Op::OpBranchConditional); |
| Block merge("merge", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) loop.SetBody("OpLoopMerge %merge %loop None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("loop", "merge", std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop; |
| // loop branches to itself, but does not trigger an error. |
| str += loop >> std::vector<Block>({merge, loop}); |
| str += merge; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()) << getDiagnosticString(); |
| } |
| |
| TEST_P(ValidateCFG, BlockAppearsBeforeDominatorBad) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block cont("cont"); |
| Block branch("branch", spv::Op::OpBranchConditional); |
| Block merge("merge", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) branch.SetBody("OpSelectionMerge %merge None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("cont", "branch", std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> branch; |
| str += cont >> merge; // cont appears before its dominator |
| str += branch >> std::vector<Block>({cont, merge}); |
| str += merge; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| MatchesRegex("Block '.\\[%cont\\]' appears in the binary " |
| "before its dominator '.\\[%branch\\]'\n" |
| " %branch = OpLabel\n")); |
| } |
| |
| TEST_P(ValidateCFG, MergeBlockTargetedByMultipleHeaderBlocksBad) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop("loop"); |
| Block selection("selection", spv::Op::OpBranchConditional); |
| Block merge("merge", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) loop.SetBody(" OpLoopMerge %merge %loop None\n"); |
| |
| // cannot share the same merge |
| if (is_shader) selection.SetBody("OpSelectionMerge %merge None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("merge", std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop; |
| str += loop >> selection; |
| str += selection >> std::vector<Block>({loop, merge}); |
| str += merge; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| if (is_shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| MatchesRegex("Block '.\\[%merge\\]' is already a merge block " |
| "for another header\n" |
| " %Main = OpFunction %void None %9\n")); |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_P(ValidateCFG, MergeBlockTargetedByMultipleHeaderBlocksSelectionBad) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop("loop", spv::Op::OpBranchConditional); |
| Block selection("selection", spv::Op::OpBranchConditional); |
| Block merge("merge", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) selection.SetBody(" OpSelectionMerge %merge None\n"); |
| |
| // cannot share the same merge |
| if (is_shader) loop.SetBody(" OpLoopMerge %merge %loop None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("merge", std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> selection; |
| str += selection >> std::vector<Block>({merge, loop}); |
| str += loop >> std::vector<Block>({loop, merge}); |
| str += merge; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| if (is_shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| MatchesRegex("Block '.\\[%merge\\]' is already a merge block " |
| "for another header\n" |
| " %Main = OpFunction %void None %9\n")); |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_P(ValidateCFG, BranchTargetFirstBlockBadSinceEntryBlock) { |
| Block entry("entry"); |
| Block bad("bad"); |
| Block end("end", spv::Op::OpReturn); |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("entry", "bad", std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> bad; |
| str += bad >> entry; // Cannot target entry block |
| str += end; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| MatchesRegex("First block '.\\[%entry\\]' of function " |
| "'.\\[%Main\\]' is targeted by block '.\\[%bad\\]'\n" |
| " %Main = OpFunction %void None %10\n")); |
| } |
| |
| TEST_P(ValidateCFG, BranchTargetFirstBlockBadSinceValue) { |
| Block entry("entry"); |
| entry.SetBody("%undef = OpUndef %boolt\n"); |
| Block bad("bad"); |
| Block end("end", spv::Op::OpReturn); |
| Block badvalue("undef"); // This references the OpUndef. |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("entry", "bad", std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> bad; |
| str += |
| bad >> badvalue; // Check branch to a function value (it's not a block!) |
| str += end; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_ERROR_INVALID_ID, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| HasSubstr("'Target Label' operands for OpBranch must " |
| "be the ID of an OpLabel instruction")); |
| } |
| |
| TEST_P(ValidateCFG, BranchConditionalTrueTargetFirstBlockBad) { |
| Block entry("entry"); |
| Block bad("bad", spv::Op::OpBranchConditional); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| bad.SetBody(" OpLoopMerge %entry %exit None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("entry", "bad", std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> bad; |
| str += bad >> std::vector<Block>({entry, exit}); // cannot target entry block |
| str += exit; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex("First block '.\\[%entry\\]' of function '.\\[%Main\\]' " |
| "is targeted by block '.\\[%bad\\]'\n" |
| " %Main = OpFunction %void None %10\n")); |
| } |
| |
| TEST_P(ValidateCFG, BranchConditionalFalseTargetFirstBlockBad) { |
| Block entry("entry"); |
| Block bad("bad", spv::Op::OpBranchConditional); |
| Block t("t"); |
| Block merge("merge"); |
| Block end("end", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| bad.SetBody("OpLoopMerge %merge %cont None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("entry", "bad", std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> bad; |
| str += bad >> std::vector<Block>({t, entry}); |
| str += merge >> end; |
| str += end; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex("First block '.\\[%entry\\]' of function '.\\[%Main\\]' " |
| "is targeted by block '.\\[%bad\\]'\n" |
| " %Main = OpFunction %void None %10\n")); |
| } |
| |
| TEST_P(ValidateCFG, SwitchTargetFirstBlockBad) { |
| Block entry("entry"); |
| Block bad("bad", spv::Op::OpSwitch); |
| Block block1("block1"); |
| Block block2("block2"); |
| Block block3("block3"); |
| Block def("def"); // default block |
| Block merge("merge"); |
| Block end("end", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| bad.SetBody("OpSelectionMerge %merge None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("entry", "bad", std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> bad; |
| str += bad >> std::vector<Block>({def, block1, block2, block3, entry}); |
| str += def >> merge; |
| str += block1 >> merge; |
| str += block2 >> merge; |
| str += block3 >> merge; |
| str += merge >> end; |
| str += end; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex("First block '.\\[%entry\\]' of function '.\\[%Main\\]' " |
| "is targeted by block '.\\[%bad\\]'\n" |
| " %Main = OpFunction %void None %10\n")); |
| } |
| |
| TEST_P(ValidateCFG, BranchToBlockInOtherFunctionBad) { |
| Block entry("entry"); |
| Block middle("middle", spv::Op::OpBranchConditional); |
| Block end("end", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| middle.SetBody("OpSelectionMerge %end None\n"); |
| |
| Block entry2("entry2"); |
| Block middle2("middle2"); |
| Block end2("end2", spv::Op::OpReturn); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("middle2", std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> middle; |
| str += middle >> std::vector<Block>({end, middle2}); |
| str += end; |
| str += "OpFunctionEnd\n"; |
| |
| str += "%func2 = OpFunction %voidt None %funct\n"; |
| str += entry2 >> middle2; |
| str += middle2 >> end2; |
| str += end2; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| MatchesRegex( |
| "Block\\(s\\) \\{'.\\[%middle2\\]'\\} are referenced but not " |
| "defined in function '.\\[%Main\\]'\n" |
| " %Main = OpFunction %void None %9\n")); |
| } |
| |
| TEST_P(ValidateCFG, HeaderDoesntStrictlyDominateMergeBad) { |
| // If a merge block is reachable, then it must be strictly dominated by |
| // its header block. |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block head("head", spv::Op::OpBranchConditional); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| head.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| |
| if (is_shader) head.AppendBody("OpSelectionMerge %head None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("head", "exit", std::make_pair("func", "Main")) + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += head >> std::vector<Block>({exit, exit}); |
| str += exit; |
| str += "OpFunctionEnd\n"; |
| |
| CompileSuccessfully(str); |
| if (is_shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex( |
| "The selection construct with the selection header " |
| "'.\\[%head\\]' does not strictly structurally dominate the " |
| "merge block " |
| "'.\\[%head\\]'\n %head = OpLabel\n")); |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()) << str; |
| } |
| } |
| |
| std::string GetUnreachableMergeNoMergeInst(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranchConditional); |
| Block t("t", spv::Op::OpReturn); |
| Block f("f", spv::Op::OpReturn); |
| Block merge("merge", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (cap == spv::Capability::Shader) |
| branch.AppendBody("OpSelectionMerge %merge None\n"); |
| |
| std::string str = header; |
| str += nameOps("branch", "merge", std::make_pair("func", "Main")); |
| str += types_consts() + "%func = OpFunction %voidt None %funct\n"; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({t, f}); |
| str += t; |
| str += f; |
| str += merge; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableMergeNoMergeInst) { |
| CompileSuccessfully(GetUnreachableMergeNoMergeInst(GetParam())); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetUnreachableMergeTerminatedBy(spv::Capability cap, spv::Op op) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranchConditional); |
| Block t("t", spv::Op::OpReturn); |
| Block f("f", spv::Op::OpReturn); |
| Block merge("merge", op); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| std::string str = header; |
| if (cap == spv::Capability::Shader) |
| branch.AppendBody("OpSelectionMerge %merge None\n"); |
| |
| str += nameOps("branch", "merge", std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({t, f}); |
| str += t; |
| str += f; |
| str += merge; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableMergeTerminatedByOpUnreachable) { |
| CompileSuccessfully( |
| GetUnreachableMergeTerminatedBy(GetParam(), spv::Op::OpUnreachable)); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, UnreachableMergeTerminatedByOpKill) { |
| CompileSuccessfully(GetUnreachableMergeTerminatedBy(spv::Capability::Shader, |
| spv::Op::OpKill)); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_P(ValidateCFG, UnreachableMergeTerminatedByOpReturn) { |
| CompileSuccessfully( |
| GetUnreachableMergeTerminatedBy(GetParam(), spv::Op::OpReturn)); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetUnreachableContinueTerminatedBy(spv::Capability cap, |
| spv::Op op) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranch); |
| Block merge("merge", spv::Op::OpReturn); |
| Block target("target", op); |
| |
| if (op == spv::Op::OpBranch) target >> branch; |
| |
| std::string str = header; |
| if (cap == spv::Capability::Shader) |
| branch.AppendBody("OpLoopMerge %merge %target None\n"); |
| |
| str += nameOps("branch", "merge", "target", std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({merge}); |
| str += merge; |
| str += target; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableContinueTerminatedByOpUnreachable) { |
| CompileSuccessfully( |
| GetUnreachableContinueTerminatedBy(GetParam(), spv::Op::OpUnreachable)); |
| if (GetParam() == spv::Capability::Shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| HasSubstr("targeted by 0 back-edge blocks")); |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_F(ValidateCFG, UnreachableContinueTerminatedByOpKill) { |
| CompileSuccessfully(GetUnreachableContinueTerminatedBy( |
| spv::Capability::Shader, spv::Op::OpKill)); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| HasSubstr("targeted by 0 back-edge blocks")); |
| } |
| |
| TEST_P(ValidateCFG, UnreachableContinueTerminatedByOpReturn) { |
| CompileSuccessfully( |
| GetUnreachableContinueTerminatedBy(GetParam(), spv::Op::OpReturn)); |
| if (GetParam() == spv::Capability::Shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| HasSubstr("targeted by 0 back-edge blocks")); |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_P(ValidateCFG, UnreachableContinueTerminatedByOpBranch) { |
| CompileSuccessfully( |
| GetUnreachableContinueTerminatedBy(GetParam(), spv::Op::OpBranch)); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetUnreachableMergeUnreachableMergeInst(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block body("body", spv::Op::OpReturn); |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranchConditional); |
| Block t("t", spv::Op::OpReturn); |
| Block f("f", spv::Op::OpReturn); |
| Block merge("merge", spv::Op::OpUnreachable); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| std::string str = header; |
| if (cap == spv::Capability::Shader) |
| branch.AppendBody("OpSelectionMerge %merge None\n"); |
| |
| str += nameOps("branch", "merge", std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += body; |
| str += merge; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({t, f}); |
| str += t; |
| str += f; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableMergeUnreachableMergeInst) { |
| CompileSuccessfully(GetUnreachableMergeUnreachableMergeInst(GetParam())); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetUnreachableContinueUnreachableLoopInst(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block body("body", spv::Op::OpReturn); |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranch); |
| Block merge("merge", spv::Op::OpReturn); |
| Block target("target", spv::Op::OpBranch); |
| |
| target >> branch; |
| |
| std::string str = header; |
| if (cap == spv::Capability::Shader) |
| branch.AppendBody("OpLoopMerge %merge %target None\n"); |
| |
| str += nameOps("branch", "merge", "target", std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += body; |
| str += target; |
| str += merge; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({merge}); |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableContinueUnreachableLoopInst) { |
| CompileSuccessfully(GetUnreachableContinueUnreachableLoopInst(GetParam())); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetUnreachableMergeWithComplexBody(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranchConditional); |
| Block t("t", spv::Op::OpReturn); |
| Block f("f", spv::Op::OpReturn); |
| Block merge("merge", spv::Op::OpUnreachable); |
| |
| entry.AppendBody("%placeholder = OpVariable %intptrt Function\n"); |
| entry.AppendBody("%cond = OpSLessThan %boolt %one %two\n"); |
| merge.AppendBody("OpStore %placeholder %one\n"); |
| |
| std::string str = header; |
| if (cap == spv::Capability::Shader) |
| branch.AppendBody("OpSelectionMerge %merge None\n"); |
| |
| str += nameOps("branch", "merge", std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%intptrt = OpTypePointer Function %intt\n"; |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({t, f}); |
| str += t; |
| str += f; |
| str += merge; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableMergeWithComplexBody) { |
| CompileSuccessfully(GetUnreachableMergeWithComplexBody(GetParam())); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetUnreachableContinueWithComplexBody(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranch); |
| Block merge("merge", spv::Op::OpReturn); |
| Block target("target", spv::Op::OpBranch); |
| |
| target >> branch; |
| |
| entry.AppendBody("%placeholder = OpVariable %intptrt Function\n"); |
| target.AppendBody("OpStore %placeholder %one\n"); |
| |
| std::string str = header; |
| if (cap == spv::Capability::Shader) |
| branch.AppendBody("OpLoopMerge %merge %target None\n"); |
| |
| str += nameOps("branch", "merge", "target", std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%intptrt = OpTypePointer Function %intt\n"; |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({merge}); |
| str += merge; |
| str += target; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableContinueWithComplexBody) { |
| CompileSuccessfully(GetUnreachableContinueWithComplexBody(GetParam())); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetUnreachableMergeWithBranchUse(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranchConditional); |
| Block t("t", spv::Op::OpBranch); |
| Block f("f", spv::Op::OpReturn); |
| Block merge("merge", spv::Op::OpUnreachable); |
| |
| entry.AppendBody("%cond = OpSLessThan %boolt %one %two\n"); |
| |
| std::string str = header; |
| if (cap == spv::Capability::Shader) |
| branch.AppendBody("OpSelectionMerge %merge None\n"); |
| |
| str += nameOps("branch", "merge", std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({t, f}); |
| str += t >> merge; |
| str += f; |
| str += merge; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableMergeWithBranchUse) { |
| CompileSuccessfully(GetUnreachableMergeWithBranchUse(GetParam())); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetUnreachableMergeWithMultipleUses(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranchConditional); |
| Block t("t", spv::Op::OpReturn); |
| Block f("f", spv::Op::OpReturn); |
| Block merge("merge", spv::Op::OpUnreachable); |
| Block duplicate("duplicate", spv::Op::OpBranchConditional); |
| |
| entry.AppendBody("%cond = OpSLessThan %boolt %one %two\n"); |
| |
| std::string str = header; |
| if (cap == spv::Capability::Shader) { |
| branch.AppendBody("OpSelectionMerge %merge None\n"); |
| duplicate.AppendBody("OpSelectionMerge %merge None\n"); |
| } |
| |
| str += nameOps("branch", "merge", std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({t, f}); |
| str += duplicate >> std::vector<Block>({t, f}); |
| str += t; |
| str += f; |
| str += merge; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableMergeWithMultipleUses) { |
| CompileSuccessfully(GetUnreachableMergeWithMultipleUses(GetParam())); |
| if (GetParam() == spv::Capability::Shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| HasSubstr("is already a merge block for another header")); |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| std::string GetUnreachableContinueWithBranchUse(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranch); |
| Block merge("merge", spv::Op::OpReturn); |
| Block target("target", spv::Op::OpBranch); |
| |
| target >> branch; |
| |
| entry.AppendBody("%placeholder = OpVariable %intptrt Function\n"); |
| |
| std::string str = header; |
| if (cap == spv::Capability::Shader) |
| branch.AppendBody("OpLoopMerge %merge %target None\n"); |
| |
| str += nameOps("branch", "merge", "target", std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%intptrt = OpTypePointer Function %intt\n"; |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({merge}); |
| str += merge; |
| str += target; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableContinueWithBranchUse) { |
| CompileSuccessfully(GetUnreachableContinueWithBranchUse(GetParam())); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetReachableMergeAndContinue(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranch); |
| Block merge("merge", spv::Op::OpReturn); |
| Block target("target", spv::Op::OpBranch); |
| Block body("body", spv::Op::OpBranchConditional); |
| Block t("t", spv::Op::OpBranch); |
| Block f("f", spv::Op::OpBranch); |
| |
| target >> branch; |
| body.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| t >> merge; |
| f >> target; |
| |
| std::string str = header; |
| if (cap == spv::Capability::Shader) { |
| branch.AppendBody("OpLoopMerge %merge %target None\n"); |
| body.AppendBody("OpSelectionMerge %f None\n"); |
| } |
| |
| str += nameOps("branch", "merge", "target", "body", "t", "f", |
| std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({body}); |
| str += body >> std::vector<Block>({t, f}); |
| str += t; |
| str += f; |
| str += merge; |
| str += target; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, ReachableMergeAndContinue) { |
| CompileSuccessfully(GetReachableMergeAndContinue(GetParam())); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetUnreachableMergeAndContinue(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block entry("entry"); |
| Block branch("branch", spv::Op::OpBranch); |
| Block merge("merge", spv::Op::OpReturn); |
| Block target("target", spv::Op::OpBranch); |
| Block body("body", spv::Op::OpBranchConditional); |
| Block t("t", spv::Op::OpReturn); |
| Block f("f", spv::Op::OpReturn); |
| Block pre_target("pre_target", spv::Op::OpBranch); |
| |
| target >> branch; |
| body.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| |
| std::string str = header; |
| if (cap == spv::Capability::Shader) { |
| branch.AppendBody("OpLoopMerge %merge %target None\n"); |
| body.AppendBody("OpSelectionMerge %pre_target None\n"); |
| } |
| |
| str += nameOps("branch", "merge", "pre_target", "target", "body", "t", "f", |
| std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += entry >> branch; |
| str += branch >> std::vector<Block>({body}); |
| str += body >> std::vector<Block>({t, f}); |
| str += t; |
| str += f; |
| str += merge; |
| str += pre_target >> target; |
| str += target; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableMergeAndContinue) { |
| CompileSuccessfully(GetUnreachableMergeAndContinue(GetParam())); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetUnreachableBlock(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block entry("entry"); |
| Block unreachable("unreachable"); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| std::string str = header; |
| str += nameOps("unreachable", "exit", std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%func = OpFunction %voidt None %funct\n"; |
| str += entry >> exit; |
| str += unreachable >> exit; |
| str += exit; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableBlock) { |
| CompileSuccessfully(GetUnreachableBlock(GetParam())); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| std::string GetUnreachableBranch(spv::Capability cap) { |
| std::string header = GetDefaultHeader(cap); |
| |
| Block entry("entry"); |
| Block unreachable("unreachable", spv::Op::OpBranchConditional); |
| Block unreachablechildt("unreachablechildt"); |
| Block unreachablechildf("unreachablechildf"); |
| Block merge("merge"); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| unreachable.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (cap == spv::Capability::Shader) |
| unreachable.AppendBody("OpSelectionMerge %merge None\n"); |
| |
| std::string str = header; |
| str += nameOps("unreachable", "exit", std::make_pair("func", "Main")); |
| str += types_consts(); |
| str += "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> exit; |
| str += |
| unreachable >> std::vector<Block>({unreachablechildt, unreachablechildf}); |
| str += unreachablechildt >> merge; |
| str += unreachablechildf >> merge; |
| str += merge >> exit; |
| str += exit; |
| str += "OpFunctionEnd\n"; |
| |
| return str; |
| } |
| |
| TEST_P(ValidateCFG, UnreachableBranch) { |
| CompileSuccessfully(GetUnreachableBranch(GetParam())); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_P(ValidateCFG, EmptyFunction) { |
| std::string str = GetDefaultHeader(GetParam()) + std::string(types_consts()) + |
| R"(%func = OpFunction %voidt None %funct |
| %l = OpLabel |
| OpReturn |
| OpFunctionEnd)"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_P(ValidateCFG, SingleBlockLoop) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop("loop", spv::Op::OpBranchConditional); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) loop.AppendBody("OpLoopMerge %exit %loop None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + std::string(types_consts()) + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop; |
| str += loop >> std::vector<Block>({loop, exit}); |
| str += exit; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_P(ValidateCFG, NestedLoops) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop1("loop1"); |
| Block loop1_cont_break_block("loop1_cont_break_block", |
| spv::Op::OpBranchConditional); |
| Block loop2("loop2", spv::Op::OpBranchConditional); |
| Block loop2_merge("loop2_merge"); |
| Block loop1_merge("loop1_merge"); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) { |
| loop1.SetBody("OpLoopMerge %loop1_merge %loop2 None\n"); |
| loop2.SetBody("OpLoopMerge %loop2_merge %loop2 None\n"); |
| } |
| |
| std::string str = |
| GetDefaultHeader(GetParam()) + |
| nameOps("loop1", "loop1_cont_break_block", "loop2", "loop2_merge") + |
| types_consts() + "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop1; |
| str += loop1 >> loop1_cont_break_block; |
| str += loop1_cont_break_block >> std::vector<Block>({loop1_merge, loop2}); |
| str += loop2 >> std::vector<Block>({loop2, loop2_merge}); |
| str += loop2_merge >> loop1; |
| str += loop1_merge >> exit; |
| str += exit; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_P(ValidateCFG, NestedSelection) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| const int N = 256; |
| std::vector<Block> if_blocks; |
| std::vector<Block> merge_blocks; |
| Block inner("inner"); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| |
| if_blocks.emplace_back("if0", spv::Op::OpBranchConditional); |
| |
| if (is_shader) if_blocks[0].SetBody("OpSelectionMerge %if_merge0 None\n"); |
| merge_blocks.emplace_back("if_merge0", spv::Op::OpReturn); |
| |
| for (int i = 1; i < N; i++) { |
| std::stringstream ss; |
| ss << i; |
| if_blocks.emplace_back("if" + ss.str(), spv::Op::OpBranchConditional); |
| if (is_shader) |
| if_blocks[i].SetBody("OpSelectionMerge %if_merge" + ss.str() + " None\n"); |
| merge_blocks.emplace_back("if_merge" + ss.str(), spv::Op::OpBranch); |
| } |
| std::string str = GetDefaultHeader(GetParam()) + std::string(types_consts()) + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> if_blocks[0]; |
| for (int i = 0; i < N - 1; i++) { |
| str += |
| if_blocks[i] >> std::vector<Block>({if_blocks[i + 1], merge_blocks[i]}); |
| } |
| str += if_blocks.back() >> std::vector<Block>({inner, merge_blocks.back()}); |
| str += inner >> merge_blocks.back(); |
| for (int i = N - 1; i > 0; i--) { |
| str += merge_blocks[i] >> merge_blocks[i - 1]; |
| } |
| str += merge_blocks[0]; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_P(ValidateCFG, BackEdgeBlockDoesntPostDominateContinueTargetBad) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop1("loop1", spv::Op::OpBranchConditional); |
| Block loop2("loop2", spv::Op::OpBranchConditional); |
| Block loop2_merge("loop2_merge"); |
| Block loop1_cont("loop1_cont", spv::Op::OpBranchConditional); |
| Block be_block("be_block"); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) { |
| loop1.SetBody("OpLoopMerge %exit %loop1_cont None\n"); |
| loop2.SetBody("OpLoopMerge %loop2_merge %loop2 None\n"); |
| } |
| |
| std::string str = |
| GetDefaultHeader(GetParam()) + |
| nameOps("loop1", "loop2", "be_block", "loop1_cont", "loop2_merge") + |
| types_consts() + "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop1; |
| str += loop1 >> std::vector<Block>({loop2, exit}); |
| str += loop2 >> std::vector<Block>({loop2, loop2_merge}); |
| str += loop2_merge >> loop1_cont; |
| str += loop1_cont >> std::vector<Block>({be_block, exit}); |
| str += be_block >> loop1; |
| str += exit; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| if (GetParam() == spv::Capability::Shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex( |
| "The continue construct with the continue target " |
| "'.\\[%loop1_cont\\]' is not structurally post dominated by the " |
| "back-edge block '.\\[%be_block\\]'\n" |
| " %be_block = OpLabel\n")); |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_P(ValidateCFG, BranchingToNonLoopHeaderBlockBad) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block split("split", spv::Op::OpBranchConditional); |
| Block t("t"); |
| Block f("f"); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) split.SetBody("OpSelectionMerge %exit None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + nameOps("split", "f") + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> split; |
| str += split >> std::vector<Block>({t, f}); |
| str += t >> exit; |
| str += f >> split; |
| str += exit; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| if (is_shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex("Back-edges \\('.\\[%f\\]' -> '.\\[%split\\]'\\) can only " |
| "be formed between a block and a loop header.\n" |
| " %f = OpLabel\n")); |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_P(ValidateCFG, BranchingToSameNonLoopHeaderBlockBad) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block split("split", spv::Op::OpBranchConditional); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) split.SetBody("OpSelectionMerge %exit None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + nameOps("split") + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> split; |
| str += split >> std::vector<Block>({split, exit}); |
| str += exit; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| if (is_shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex( |
| "Back-edges \\('.\\[%split\\]' -> '.\\[%split\\]'\\) can only be " |
| "formed between a block and a loop header.\n %split = OpLabel\n")); |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_P(ValidateCFG, MultipleBackEdgeBlocksToLoopHeaderBad) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop("loop", spv::Op::OpBranchConditional); |
| Block back0("back0"); |
| Block back1("back1"); |
| Block merge("merge", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) loop.SetBody("OpLoopMerge %merge %back0 None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("loop", "back0", "back1") + types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop; |
| str += loop >> std::vector<Block>({back0, back1}); |
| str += back0 >> loop; |
| str += back1 >> loop; |
| str += merge; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| if (is_shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex( |
| "Loop header '.\\[%loop\\]' is targeted by 2 back-edge blocks but " |
| "the standard requires exactly one\n %loop = OpLabel\n")) |
| << str; |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_P(ValidateCFG, ContinueTargetMustBePostDominatedByBackEdge) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop("loop", spv::Op::OpBranchConditional); |
| Block cheader("cheader", spv::Op::OpBranchConditional); |
| Block be_block("be_block"); |
| Block merge("merge", spv::Op::OpReturn); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) loop.SetBody("OpLoopMerge %merge %cheader None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("cheader", "be_block") + types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop; |
| str += loop >> std::vector<Block>({cheader, merge}); |
| str += cheader >> std::vector<Block>({exit, be_block}); |
| str += exit; // Branches out of a continue construct |
| str += be_block >> loop; |
| str += merge; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| if (is_shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex( |
| "The continue construct with the continue target " |
| "'.\\[%cheader\\]' is not structurally post dominated by the " |
| "back-edge block '.\\[%be_block\\]'\n" |
| " %be_block = OpLabel\n")); |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_P(ValidateCFG, BranchOutOfConstructToMergeBad) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop("loop", spv::Op::OpBranchConditional); |
| Block cont("cont", spv::Op::OpBranchConditional); |
| Block merge("merge", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) loop.SetBody("OpLoopMerge %merge %loop None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + nameOps("cont", "loop") + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop; |
| str += loop >> std::vector<Block>({cont, merge}); |
| str += cont >> std::vector<Block>({loop, merge}); |
| str += merge; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| if (is_shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex("The continue construct with the continue target " |
| "'.\\[%loop\\]' is not structurally post dominated by the " |
| "back-edge block '.\\[%cont\\]'\n" |
| " %cont = OpLabel\n")) |
| << str; |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_P(ValidateCFG, BranchOutOfConstructBad) { |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop("loop", spv::Op::OpBranchConditional); |
| Block cont("cont", spv::Op::OpBranchConditional); |
| Block merge("merge"); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) loop.SetBody("OpLoopMerge %merge %loop None\n"); |
| |
| std::string str = GetDefaultHeader(GetParam()) + nameOps("cont", "loop") + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop; |
| str += loop >> std::vector<Block>({cont, merge}); |
| str += cont >> std::vector<Block>({loop, exit}); |
| str += merge >> exit; |
| str += exit; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| if (is_shader) { |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex("The continue construct with the continue target " |
| "'.\\[%loop\\]' is not structurally post dominated by the " |
| "back-edge block '.\\[%cont\\]'\n" |
| " %cont = OpLabel\n")); |
| } else { |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_F(ValidateCFG, OpSwitchToUnreachableBlock) { |
| Block entry("entry", spv::Op::OpSwitch); |
| Block case0("case0"); |
| Block case1("case1"); |
| Block case2("case2"); |
| Block def("default", spv::Op::OpUnreachable); |
| Block phi("phi", spv::Op::OpReturn); |
| |
| std::string str = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint GLCompute %main "main" %id |
| OpExecutionMode %main LocalSize 1 1 1 |
| OpSource GLSL 430 |
| OpName %main "main" |
| OpDecorate %id BuiltIn GlobalInvocationId |
| %void = OpTypeVoid |
| %voidf = OpTypeFunction %void |
| %u32 = OpTypeInt 32 0 |
| %f32 = OpTypeFloat 32 |
| %uvec3 = OpTypeVector %u32 3 |
| %fvec3 = OpTypeVector %f32 3 |
| %uvec3ptr = OpTypePointer Input %uvec3 |
| %id = OpVariable %uvec3ptr Input |
| %one = OpConstant %u32 1 |
| %three = OpConstant %u32 3 |
| %main = OpFunction %void None %voidf |
| )"; |
| |
| entry.SetBody( |
| "%idval = OpLoad %uvec3 %id\n" |
| "%x = OpCompositeExtract %u32 %idval 0\n" |
| "%selector = OpUMod %u32 %x %three\n" |
| "OpSelectionMerge %phi None\n"); |
| str += entry >> std::vector<Block>({def, case0, case1, case2}); |
| str += case1 >> phi; |
| str += def; |
| str += phi; |
| str += case0 >> phi; |
| str += case2 >> phi; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, LoopWithZeroBackEdgesBad) { |
| std::string str = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %main "main" |
| OpExecutionMode %main OriginUpperLeft |
| OpName %loop "loop" |
| %voidt = OpTypeVoid |
| %funct = OpTypeFunction %voidt |
| %main = OpFunction %voidt None %funct |
| %loop = OpLabel |
| OpLoopMerge %exit %loop None |
| OpBranch %exit |
| %exit = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| CompileSuccessfully(str); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| MatchesRegex("Loop header '.\\[%loop\\]' is targeted by " |
| "0 back-edge blocks but the standard requires exactly " |
| "one\n %loop = OpLabel\n")); |
| } |
| |
| TEST_F(ValidateCFG, LoopWithBackEdgeFromUnreachableContinueConstructGood) { |
| std::string str = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %main "main" |
| OpExecutionMode %main OriginUpperLeft |
| OpName %loop "loop" |
| %voidt = OpTypeVoid |
| %funct = OpTypeFunction %voidt |
| %floatt = OpTypeFloat 32 |
| %boolt = OpTypeBool |
| %one = OpConstant %floatt 1 |
| %two = OpConstant %floatt 2 |
| %main = OpFunction %voidt None %funct |
| %entry = OpLabel |
| OpBranch %loop |
| %loop = OpLabel |
| OpLoopMerge %exit %cont None |
| OpBranch %16 |
| %16 = OpLabel |
| %cond = OpFOrdLessThan %boolt %one %two |
| OpBranchConditional %cond %body %exit |
| %body = OpLabel |
| OpReturn |
| %cont = OpLabel ; Reachable only from OpLoopMerge ContinueTarget parameter |
| OpBranch %loop ; Should be considered a back-edge |
| %exit = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(str); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()) << getDiagnosticString(); |
| } |
| |
| TEST_P(ValidateCFG, |
| NestedConstructWithUnreachableMergeBlockBranchingToOuterMergeBlock) { |
| // Test for https://github.com/KhronosGroup/SPIRV-Tools/issues/297 |
| // The nested construct has an unreachable merge block. In the |
| // augmented CFG that merge block |
| // we still determine that the |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry", spv::Op::OpBranchConditional); |
| Block inner_head("inner_head", spv::Op::OpBranchConditional); |
| Block inner_true("inner_true", spv::Op::OpReturn); |
| Block inner_false("inner_false", spv::Op::OpReturn); |
| Block inner_merge("inner_merge"); |
| Block exit("exit", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) { |
| entry.AppendBody("OpSelectionMerge %exit None\n"); |
| inner_head.SetBody("OpSelectionMerge %inner_merge None\n"); |
| } |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("entry", "inner_merge", "exit") + types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> std::vector<Block>({inner_head, exit}); |
| str += inner_head >> std::vector<Block>({inner_true, inner_false}); |
| str += inner_true; |
| str += inner_false; |
| str += inner_merge >> exit; |
| str += exit; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()) << getDiagnosticString(); |
| } |
| |
| TEST_P(ValidateCFG, ContinueTargetCanBeMergeBlockForNestedStructure) { |
| // The continue construct cannot be the merge target of a nested selection |
| // because the loop construct must contain "if_merge" because it contains |
| // "if_head". |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop("loop"); |
| Block if_head("if_head", spv::Op::OpBranchConditional); |
| Block if_true("if_true"); |
| Block if_merge("if_merge", spv::Op::OpBranchConditional); |
| Block merge("merge", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) { |
| loop.SetBody("OpLoopMerge %merge %if_merge None\n"); |
| if_head.SetBody("OpSelectionMerge %if_merge None\n"); |
| } |
| |
| std::string str = |
| GetDefaultHeader(GetParam()) + |
| nameOps("entry", "loop", "if_head", "if_true", "if_merge", "merge") + |
| types_consts() + "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop; |
| str += loop >> if_head; |
| str += if_head >> std::vector<Block>({if_true, if_merge}); |
| str += if_true >> if_merge; |
| str += if_merge >> std::vector<Block>({loop, merge}); |
| str += merge; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| if (is_shader) { |
| EXPECT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr( |
| "Header block '3[%if_head]' is contained in the loop construct " |
| "headed " |
| "by '2[%loop]', but its merge block '5[%if_merge]' is not")); |
| } else { |
| EXPECT_THAT(SPV_SUCCESS, ValidateInstructions()); |
| } |
| } |
| |
| TEST_P(ValidateCFG, SingleLatchBlockMultipleBranchesToLoopHeader) { |
| // This test case ensures we allow both branches of a loop latch block |
| // to go back to the loop header. It still counts as a single back edge. |
| bool is_shader = GetParam() == spv::Capability::Shader; |
| Block entry("entry"); |
| Block loop("loop", spv::Op::OpBranchConditional); |
| Block latch("latch", spv::Op::OpBranchConditional); |
| Block merge("merge", spv::Op::OpReturn); |
| |
| entry.SetBody("%cond = OpSLessThan %boolt %one %two\n"); |
| if (is_shader) { |
| loop.SetBody("OpLoopMerge %merge %latch None\n"); |
| } |
| |
| std::string str = GetDefaultHeader(GetParam()) + |
| nameOps("entry", "loop", "latch", "merge") + |
| types_consts() + |
| "%func = OpFunction %voidt None %funct\n"; |
| |
| str += entry >> loop; |
| str += loop >> std::vector<Block>({latch, merge}); |
| str += latch >> std::vector<Block>({loop, loop}); // This is the key |
| str += merge; |
| str += "OpFunctionEnd"; |
| |
| CompileSuccessfully(str); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()) |
| << str << getDiagnosticString(); |
| } |
| |
| // Unit test to check the case where a basic block is the entry block of 2 |
| // different constructs. In this case, the basic block is the entry block of a |
| // continue construct as well as a selection construct. See issue# 517 for more |
| // details. |
| TEST_F(ValidateCFG, BasicBlockIsEntryBlockOfTwoConstructsGood) { |
| std::string spirv = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %void = OpTypeVoid |
| %bool = OpTypeBool |
| %int = OpTypeInt 32 1 |
| %void_func = OpTypeFunction %void |
| %int_0 = OpConstant %int 0 |
| %testfun = OpFunction %void None %void_func |
| %label_1 = OpLabel |
| OpBranch %start |
| %start = OpLabel |
| %cond = OpSLessThan %bool %int_0 %int_0 |
| ; |
| ; Note: In this case, the "target" block is both the entry block of |
| ; the continue construct of the loop as well as the entry block of |
| ; the selection construct. |
| ; |
| OpLoopMerge %loop_merge %target None |
| OpBranchConditional %cond %target %loop_merge |
| %loop_merge = OpLabel |
| OpReturn |
| %target = OpLabel |
| OpSelectionMerge %selection_merge None |
| OpBranchConditional %cond %do_stuff %do_other_stuff |
| %do_other_stuff = OpLabel |
| OpBranch %selection_merge |
| %selection_merge = OpLabel |
| OpBranch %start |
| %do_stuff = OpLabel |
| OpBranch %selection_merge |
| OpFunctionEnd |
| )"; |
| CompileSuccessfully(spirv); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, OpReturnInNonVoidFunc) { |
| std::string spirv = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %int = OpTypeInt 32 1 |
| %int_func = OpTypeFunction %int |
| %testfun = OpFunction %int None %int_func |
| %label_1 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| CompileSuccessfully(spirv); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr( |
| "OpReturn can only be called from a function with void return type.\n" |
| " OpReturn")); |
| } |
| |
| TEST_F(ValidateCFG, StructuredCFGBranchIntoSelectionBody) { |
| std::string spirv = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %func "func" |
| OpExecutionMode %func OriginUpperLeft |
| %void = OpTypeVoid |
| %bool = OpTypeBool |
| %true = OpConstantTrue %bool |
| %functy = OpTypeFunction %void |
| %func = OpFunction %void None %functy |
| %entry = OpLabel |
| OpSelectionMerge %merge None |
| OpBranchConditional %true %then %merge |
| %merge = OpLabel |
| OpBranch %then |
| %then = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(spirv); |
| EXPECT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| HasSubstr("branches to the selection construct, but not to the " |
| "selection header <ID> 6\n %7 = OpLabel")); |
| } |
| |
| TEST_F(ValidateCFG, SwitchDefaultOnly) { |
| std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %1 = OpTypeVoid |
| %2 = OpTypeInt 32 0 |
| %3 = OpConstant %2 0 |
| %4 = OpTypeFunction %1 |
| %5 = OpFunction %1 None %4 |
| %6 = OpLabel |
| OpSelectionMerge %7 None |
| OpSwitch %3 %7 |
| %7 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, SwitchSingleCase) { |
| std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %1 = OpTypeVoid |
| %2 = OpTypeInt 32 0 |
| %3 = OpConstant %2 0 |
| %4 = OpTypeFunction %1 |
| %5 = OpFunction %1 None %4 |
| %6 = OpLabel |
| OpSelectionMerge %7 None |
| OpSwitch %3 %7 0 %8 |
| %8 = OpLabel |
| OpBranch %7 |
| %7 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, MultipleFallThroughBlocks) { |
| std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %1 = OpTypeVoid |
| %2 = OpTypeInt 32 0 |
| %3 = OpConstant %2 0 |
| %4 = OpTypeFunction %1 |
| %5 = OpTypeBool |
| %6 = OpConstantTrue %5 |
| %7 = OpFunction %1 None %4 |
| %8 = OpLabel |
| OpSelectionMerge %9 None |
| OpSwitch %3 %10 0 %11 1 %12 |
| %10 = OpLabel |
| OpBranchConditional %6 %11 %12 |
| %11 = OpLabel |
| OpBranch %9 |
| %12 = OpLabel |
| OpBranch %9 |
| %9 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr( |
| "Case construct that targets '10[%10]' has branches to multiple " |
| "other " |
| "case construct targets '12[%12]' and '11[%11]'\n %10 = OpLabel")); |
| } |
| |
| TEST_F(ValidateCFG, MultipleFallThroughToDefault) { |
| std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %1 = OpTypeVoid |
| %2 = OpTypeInt 32 0 |
| %3 = OpConstant %2 0 |
| %4 = OpTypeFunction %1 |
| %5 = OpTypeBool |
| %6 = OpConstantTrue %5 |
| %7 = OpFunction %1 None %4 |
| %8 = OpLabel |
| OpSelectionMerge %9 None |
| OpSwitch %3 %10 0 %11 1 %12 |
| %10 = OpLabel |
| OpBranch %9 |
| %11 = OpLabel |
| OpBranch %10 |
| %12 = OpLabel |
| OpBranch %10 |
| %9 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr("Multiple case constructs have branches to the case construct " |
| "that targets '10[%10]'\n %10 = OpLabel")); |
| } |
| |
| TEST_F(ValidateCFG, MultipleFallThroughToNonDefault) { |
| std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %1 = OpTypeVoid |
| %2 = OpTypeInt 32 0 |
| %3 = OpConstant %2 0 |
| %4 = OpTypeFunction %1 |
| %5 = OpTypeBool |
| %6 = OpConstantTrue %5 |
| %7 = OpFunction %1 None %4 |
| %8 = OpLabel |
| OpSelectionMerge %9 None |
| OpSwitch %3 %10 0 %11 1 %12 |
| %10 = OpLabel |
| OpBranch %12 |
| %11 = OpLabel |
| OpBranch %12 |
| %12 = OpLabel |
| OpBranch %9 |
| %9 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr("Multiple case constructs have branches to the case construct " |
| "that targets '12[%12]'\n %12 = OpLabel")); |
| } |
| |
| TEST_F(ValidateCFG, DuplicateTargetWithFallThrough) { |
| std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %1 = OpTypeVoid |
| %2 = OpTypeInt 32 0 |
| %3 = OpConstant %2 0 |
| %4 = OpTypeFunction %1 |
| %5 = OpTypeBool |
| %6 = OpConstantTrue %5 |
| %7 = OpFunction %1 None %4 |
| %8 = OpLabel |
| OpSelectionMerge %9 None |
| OpSwitch %3 %10 0 %10 1 %11 |
| %10 = OpLabel |
| OpBranch %11 |
| %11 = OpLabel |
| OpBranch %9 |
| %9 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, OpSwitchTargetCannotBeOuterLoopMergeBlock) { |
| std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| |
| %1 = OpTypeVoid |
| %2 = OpTypeFunction %1 |
| %3 = OpTypeBool |
| %4 = OpUndef %3 |
| %5 = OpTypeInt 32 0 |
| %6 = OpConstant %5 0 |
| |
| %7 = OpFunction %1 None %2 |
| |
| %8 = OpLabel |
| OpBranch %9 |
| |
| %9 = OpLabel |
| OpLoopMerge %10 %11 None |
| OpBranch %12 |
| |
| %12 = OpLabel |
| OpSelectionMerge %13 None |
| OpSwitch %6 %13 0 %10 1 %14 |
| |
| %14 = OpLabel |
| OpBranch %13 |
| |
| %13 = OpLabel |
| OpBranch %11 |
| |
| %11 = OpLabel |
| OpBranch %9 |
| |
| %10 = OpLabel |
| OpReturn |
| |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr( |
| "Switch header '12[%12]' does not structurally dominate its case construct '10[%10]'\n" |
| " %12 = OpLabel")); |
| } |
| |
| TEST_F(ValidateCFG, OpSwitchTargetCannotBeOuterLoopContinueBlock) { |
| std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| |
| %1 = OpTypeVoid |
| %2 = OpTypeFunction %1 |
| %3 = OpTypeBool |
| %4 = OpUndef %3 |
| %5 = OpTypeInt 32 0 |
| %6 = OpConstant %5 0 |
| |
| %7 = OpFunction %1 None %2 |
| |
| %8 = OpLabel |
| OpBranch %9 |
| |
| %9 = OpLabel |
| OpLoopMerge %10 %11 None |
| OpBranch %12 |
| |
| %12 = OpLabel |
| OpSelectionMerge %13 None |
| OpSwitch %6 %13 0 %11 1 %14 |
| |
| %14 = OpLabel |
| OpBranch %13 |
| |
| %13 = OpLabel |
| OpBranch %11 |
| |
| %11 = OpLabel |
| OpBranch %9 |
| |
| %10 = OpLabel |
| OpReturn |
| |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr( |
| "Switch header '12[%12]' does not structurally dominate its case construct '11[%11]'\n" |
| " %12 = OpLabel")); |
| } |
| |
| TEST_F(ValidateCFG, WrongOperandList) { |
| std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %1 = OpTypeVoid |
| %2 = OpTypeInt 32 0 |
| %3 = OpConstant %2 0 |
| %4 = OpTypeFunction %1 |
| %5 = OpTypeBool |
| %6 = OpConstantTrue %5 |
| %7 = OpFunction %1 None %4 |
| %8 = OpLabel |
| OpSelectionMerge %9 None |
| OpSwitch %3 %10 0 %11 1 %12 |
| %10 = OpLabel |
| OpBranch %9 |
| %12 = OpLabel |
| OpBranch %11 |
| %11 = OpLabel |
| OpBranch %9 |
| %9 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr( |
| "Case construct that targets '12[%12]' has branches to the case " |
| "construct that targets '11[%11]', but does not immediately " |
| "precede it in the OpSwitch's target list\n" |
| " OpSwitch %uint_0 %10 0 %11 1 %12")); |
| } |
| |
| TEST_F(ValidateCFG, WrongOperandListThroughDefault) { |
| std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %1 = OpTypeVoid |
| %2 = OpTypeInt 32 0 |
| %3 = OpConstant %2 0 |
| %4 = OpTypeFunction %1 |
| %5 = OpTypeBool |
| %6 = OpConstantTrue %5 |
| %7 = OpFunction %1 None %4 |
| %8 = OpLabel |
| OpSelectionMerge %9 None |
| OpSwitch %3 %10 0 %11 1 %12 |
| %10 = OpLabel |
| OpBranch %11 |
| %12 = OpLabel |
| OpBranch %10 |
| %11 = OpLabel |
| OpBranch %9 |
| %9 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr( |
| "Case construct that targets '12[%12]' has branches to the case " |
| "construct that targets '11[%11]', but does not immediately " |
| "precede it in the OpSwitch's target list\n" |
| " OpSwitch %uint_0 %10 0 %11 1 %12")); |
| } |
| |
| TEST_F(ValidateCFG, WrongOperandListNotLast) { |
| std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %1 = OpTypeVoid |
| %2 = OpTypeInt 32 0 |
| %3 = OpConstant %2 0 |
| %4 = OpTypeFunction %1 |
| %5 = OpTypeBool |
| %6 = OpConstantTrue %5 |
| %7 = OpFunction %1 None %4 |
| %8 = OpLabel |
| OpSelectionMerge %9 None |
| OpSwitch %3 %10 0 %11 1 %12 2 %13 |
| %10 = OpLabel |
| OpBranch %9 |
| %12 = OpLabel |
| OpBranch %11 |
| %11 = OpLabel |
| OpBranch %9 |
| %13 = OpLabel |
| OpBranch %9 |
| %9 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr( |
| "Case construct that targets '12[%12]' has branches to the case " |
| "construct that targets '11[%11]', but does not immediately " |
| "precede it in the OpSwitch's target list\n" |
| " OpSwitch %uint_0 %10 0 %11 1 %12 2 %13")); |
| } |
| |
| TEST_F(ValidateCFG, GoodUnreachableSwitch) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %2 "main" |
| OpExecutionMode %2 OriginUpperLeft |
| %3 = OpTypeVoid |
| %4 = OpTypeFunction %3 |
| %5 = OpTypeBool |
| %6 = OpConstantTrue %5 |
| %7 = OpTypeInt 32 1 |
| %9 = OpConstant %7 0 |
| %2 = OpFunction %3 None %4 |
| %10 = OpLabel |
| OpSelectionMerge %11 None |
| OpBranchConditional %6 %12 %13 |
| %12 = OpLabel |
| OpReturn |
| %13 = OpLabel |
| OpReturn |
| %11 = OpLabel |
| OpSelectionMerge %14 None |
| OpSwitch %9 %14 0 %15 |
| %15 = OpLabel |
| OpBranch %14 |
| %14 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_THAT(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, InvalidCaseExit) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %1 "func" |
| OpExecutionMode %1 OriginUpperLeft |
| %2 = OpTypeVoid |
| %3 = OpTypeInt 32 0 |
| %4 = OpTypeFunction %2 |
| %5 = OpConstant %3 0 |
| %1 = OpFunction %2 None %4 |
| %6 = OpLabel |
| OpSelectionMerge %7 None |
| OpSwitch %5 %7 0 %8 1 %9 |
| %8 = OpLabel |
| OpBranch %10 |
| %9 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| OpReturn |
| %7 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr("Case construct that targets '8[%8]' has invalid branch " |
| "to block '10[%10]' (not another case construct, " |
| "corresponding merge, outer loop merge or outer loop " |
| "continue)")); |
| } |
| |
| TEST_F(ValidateCFG, GoodCaseExitsToOuterConstructs) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %func "func" |
| OpExecutionMode %func OriginUpperLeft |
| %void = OpTypeVoid |
| %bool = OpTypeBool |
| %true = OpConstantTrue %bool |
| %int = OpTypeInt 32 0 |
| %int0 = OpConstant %int 0 |
| %func_ty = OpTypeFunction %void |
| %func = OpFunction %void None %func_ty |
| %1 = OpLabel |
| OpBranch %2 |
| %2 = OpLabel |
| OpLoopMerge %7 %6 None |
| OpBranch %3 |
| %3 = OpLabel |
| OpSelectionMerge %5 None |
| OpSwitch %int0 %5 0 %4 |
| %4 = OpLabel |
| OpBranchConditional %true %6 %7 |
| %5 = OpLabel |
| OpBranchConditional %true %6 %7 |
| %6 = OpLabel |
| OpBranch %2 |
| %7 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, SwitchCaseOrderingBad1) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| OpName %default "default" |
| OpName %other "other" |
| %void = OpTypeVoid |
| %int = OpTypeInt 32 0 |
| %undef = OpUndef %int |
| %void_fn = OpTypeFunction %void |
| %func = OpFunction %void None %void_fn |
| %entry = OpLabel |
| OpSelectionMerge %merge None |
| OpSwitch %undef %default 0 %other 1 %default |
| %default = OpLabel |
| OpBranch %other |
| %other = OpLabel |
| OpBranch %merge |
| %merge = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr("Case construct that targets '1[%default]' has branches to the " |
| "case construct that targets '2[%other]', but does not " |
| "immediately precede it in the OpSwitch's target list")); |
| } |
| |
| TEST_F(ValidateCFG, SwitchCaseOrderingBad2) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| OpName %default "default" |
| OpName %other "other" |
| %void = OpTypeVoid |
| %int = OpTypeInt 32 0 |
| %undef = OpUndef %int |
| %void_fn = OpTypeFunction %void |
| %func = OpFunction %void None %void_fn |
| %entry = OpLabel |
| OpSelectionMerge %merge None |
| OpSwitch %undef %default 0 %default 1 %other |
| %other = OpLabel |
| OpBranch %default |
| %default = OpLabel |
| OpBranch %merge |
| %merge = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| EXPECT_THAT( |
| getDiagnosticString(), |
| HasSubstr("Case construct that targets '2[%other]' has branches to the " |
| "case construct that targets '1[%default]', but does not " |
| "immediately precede it in the OpSwitch's target list")); |
| } |
| |
| TEST_F(ValidateCFG, SwitchMultipleDefaultWithFallThroughGood) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| OpName %first "first" |
| OpName %second "second" |
| OpName %third "third" |
| %void = OpTypeVoid |
| %int = OpTypeInt 32 0 |
| %undef = OpUndef %int |
| %void_fn = OpTypeFunction %void |
| %func = OpFunction %void None %void_fn |
| %entry = OpLabel |
| OpSelectionMerge %merge None |
| OpSwitch %undef %second 0 %first 1 %second 2 %third |
| %first = OpLabel |
| OpBranch %second |
| %second = OpLabel |
| OpBranch %third |
| %third = OpLabel |
| OpBranch %merge |
| %merge = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, SwitchMultipleDefaultWithFallThroughBad) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| OpName %first "first" |
| OpName %second "second" |
| OpName %third "third" |
| %void = OpTypeVoid |
| %int = OpTypeInt 32 0 |
| %undef = OpUndef %int |
| %void_fn = OpTypeFunction %void |
| %func = OpFunction %void None %void_fn |
| %entry = OpLabel |
| OpSelectionMerge %merge None |
| OpSwitch %undef %second 0 %second 1 %first 2 %third |
| %first = OpLabel |
| OpBranch %second |
| %second = OpLabel |
| OpBranch %third |
| %third = OpLabel |
| OpBranch %merge |
| %merge = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, GoodUnreachableSelection) { |
| const std::string text = R"( |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %main "main" |
| OpExecutionMode %main OriginUpperLeft |
| %void = OpTypeVoid |
| %8 = OpTypeFunction %void |
| %bool = OpTypeBool |
| %false = OpConstantFalse %bool |
| %main = OpFunction %void None %8 |
| %15 = OpLabel |
| OpBranch %16 |
| %16 = OpLabel |
| OpLoopMerge %17 %18 None |
| OpBranch %19 |
| %19 = OpLabel |
| OpBranchConditional %false %21 %17 |
| %21 = OpLabel |
| OpSelectionMerge %22 None |
| OpBranchConditional %false %23 %22 |
| %23 = OpLabel |
| OpBranch %24 |
| %24 = OpLabel |
| OpLoopMerge %25 %26 None |
| OpBranch %27 |
| %27 = OpLabel |
| OpReturn |
| %26 = OpLabel |
| OpBranchConditional %false %24 %25 |
| %25 = OpLabel |
| OpSelectionMerge %28 None |
| OpBranchConditional %false %18 %28 |
| %28 = OpLabel |
| OpBranch %22 |
| %22 = OpLabel |
| OpBranch %18 |
| %18 = OpLabel |
| OpBranch %16 |
| %17 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| ASSERT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, ShaderWithPhiPtr) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint GLCompute %1 "main" |
| OpExecutionMode %1 LocalSize 1 1 1 |
| OpSource HLSL 600 |
| %bool = OpTypeBool |
| %_ptr_Function_bool = OpTypePointer Function %bool |
| %void = OpTypeVoid |
| %5 = OpTypeFunction %void |
| %1 = OpFunction %void None %5 |
| %6 = OpLabel |
| %7 = OpVariable %_ptr_Function_bool Function |
| %8 = OpVariable %_ptr_Function_bool Function |
| %9 = OpUndef %bool |
| OpSelectionMerge %10 None |
| OpBranchConditional %9 %11 %10 |
| %11 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| %12 = OpPhi %_ptr_Function_bool %7 %6 %8 %11 |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_ERROR_INVALID_DATA, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| HasSubstr("Using pointers with OpPhi requires capability " |
| "VariablePointers or VariablePointersStorageBuffer")); |
| } |
| |
| TEST_F(ValidateCFG, VarPtrShaderWithPhiPtr) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpCapability VariablePointers |
| OpExtension "SPV_KHR_variable_pointers" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint GLCompute %1 "main" |
| OpExecutionMode %1 LocalSize 1 1 1 |
| OpSource HLSL 600 |
| %bool = OpTypeBool |
| %_ptr_Function_bool = OpTypePointer Function %bool |
| %void = OpTypeVoid |
| %5 = OpTypeFunction %void |
| %1 = OpFunction %void None %5 |
| %6 = OpLabel |
| %7 = OpVariable %_ptr_Function_bool Function |
| %8 = OpVariable %_ptr_Function_bool Function |
| %9 = OpUndef %bool |
| OpSelectionMerge %10 None |
| OpBranchConditional %9 %11 %10 |
| %11 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| %12 = OpPhi %_ptr_Function_bool %7 %6 %8 %11 |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, VarPtrStgBufShaderWithPhiStgBufPtr) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpCapability VariablePointersStorageBuffer |
| OpExtension "SPV_KHR_variable_pointers" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint GLCompute %1 "main" |
| OpExecutionMode %1 LocalSize 1 1 1 |
| OpSource HLSL 600 |
| %bool = OpTypeBool |
| %float = OpTypeFloat 32 |
| %_ptr_StorageBuffer_float = OpTypePointer StorageBuffer %float |
| %7 = OpVariable %_ptr_StorageBuffer_float StorageBuffer |
| %8 = OpVariable %_ptr_StorageBuffer_float StorageBuffer |
| %void = OpTypeVoid |
| %5 = OpTypeFunction %void |
| %1 = OpFunction %void None %5 |
| %6 = OpLabel |
| %9 = OpUndef %bool |
| OpSelectionMerge %10 None |
| OpBranchConditional %9 %11 %10 |
| %11 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| %12 = OpPhi %_ptr_StorageBuffer_float %7 %6 %8 %11 |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, KernelWithPhiPtr) { |
| const std::string text = R"( |
| OpCapability Kernel |
| OpCapability Addresses |
| OpMemoryModel Physical32 OpenCL |
| OpEntryPoint Kernel %1 "main" |
| OpExecutionMode %1 LocalSize 1 1 1 |
| OpSource HLSL 600 |
| %bool = OpTypeBool |
| %_ptr_Function_bool = OpTypePointer Function %bool |
| %void = OpTypeVoid |
| %5 = OpTypeFunction %void |
| %1 = OpFunction %void None %5 |
| %6 = OpLabel |
| %7 = OpVariable %_ptr_Function_bool Function |
| %8 = OpVariable %_ptr_Function_bool Function |
| %9 = OpUndef %bool |
| OpSelectionMerge %10 None |
| OpBranchConditional %9 %11 %10 |
| %11 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| %12 = OpPhi %_ptr_Function_bool %7 %6 %8 %11 |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, SwitchTargetMustBeLabel) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint GLCompute %1 "foo" |
| %uint = OpTypeInt 32 0 |
| %uint_0 = OpConstant %uint 0 |
| %void = OpTypeVoid |
| %5 = OpTypeFunction %void |
| %1 = OpFunction %void None %5 |
| %6 = OpLabel |
| %7 = OpCopyObject %uint %uint_0 |
| OpSelectionMerge %8 None |
| OpSwitch %uint_0 %8 0 %7 |
| %8 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_ERROR_INVALID_ID, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| HasSubstr("'Target Label' operands for OpSwitch must " |
| "be IDs of an OpLabel instruction")); |
| } |
| |
| TEST_F(ValidateCFG, BranchTargetMustBeLabel) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint GLCompute %1 "foo" |
| %uint = OpTypeInt 32 0 |
| %uint_0 = OpConstant %uint 0 |
| %void = OpTypeVoid |
| %5 = OpTypeFunction %void |
| %1 = OpFunction %void None %5 |
| %2 = OpLabel |
| %7 = OpCopyObject %uint %uint_0 |
| OpBranch %7 |
| %8 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_ERROR_INVALID_ID, ValidateInstructions()); |
| EXPECT_THAT(getDiagnosticString(), |
| HasSubstr("'Target Label' operands for OpBranch must " |
| "be the ID of an OpLabel instruction")); |
| } |
| |
| TEST_F(ValidateCFG, ReachableOpUnreachableOneBlock) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %void = OpTypeVoid |
| %void_fn = OpTypeFunction %void |
| %func = OpFunction %void None %void_fn |
| %entry = OpLabel |
| OpUnreachable |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, ReachableOpUnreachableOpBranch) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %void = OpTypeVoid |
| %void_fn = OpTypeFunction %void |
| %func = OpFunction %void None %void_fn |
| %entry = OpLabel |
| OpBranch %block |
| %block = OpLabel |
| OpUnreachable |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, ReachableOpUnreachableOpBranchConditional) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %void = OpTypeVoid |
| %void_fn = OpTypeFunction %void |
| %bool = OpTypeBool |
| %undef = OpUndef %bool |
| %func = OpFunction %void None %void_fn |
| %entry = OpLabel |
| OpSelectionMerge %block None |
| OpBranchConditional %undef %block %unreachable |
| %block = OpLabel |
| OpReturn |
| %unreachable = OpLabel |
| OpUnreachable |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, ReachableOpUnreachableOpSwitch) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %void = OpTypeVoid |
| %void_fn = OpTypeFunction %void |
| %int = OpTypeInt 32 0 |
| %undef = OpUndef %int |
| %func = OpFunction %void None %void_fn |
| %entry = OpLabel |
| OpSelectionMerge %block1 None |
| OpSwitch %undef %block1 0 %unreachable 1 %block2 |
| %block1 = OpLabel |
| OpReturn |
| %unreachable = OpLabel |
| OpUnreachable |
| %block2 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, ReachableOpUnreachableLoop) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpCapability Linkage |
| OpMemoryModel Logical GLSL450 |
| %void = OpTypeVoid |
| %void_fn = OpTypeFunction %void |
| %bool = OpTypeBool |
| %undef = OpUndef %bool |
| %func = OpFunction %void None %void_fn |
| %entry = OpLabel |
| OpBranch %loop |
| %loop = OpLabel |
| OpLoopMerge %unreachable %loop None |
| OpBranchConditional %undef %loop %unreachable |
| %unreachable = OpLabel |
| OpUnreachable |
| OpFunctionEnd |
| )"; |
| |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, UnreachableLoopBadBackedge) { |
| const std::string text = R"( |
| OpCapability Shader |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %2 "main" |
| OpExecutionMode %2 OriginUpperLeft |
| %4 = OpTypeVoid |
| %5 = OpTypeFunction %4 |
| %8 = OpTypeBool |
| %13 = OpConstantTrue %8 |
| %2 = OpFunction %4 None %5 |
| %14 = OpLabel |
| OpSelectionMerge %15 None |
| OpBranchConditional %13 %15 %15 |
| %16 = OpLabel |
| OpLoopMerge %17 %18 None |
| OpBranch %17 |
| %18 = OpLabel |
| OpBranch %17 |
| %17 = OpLabel |
| OpBranch %15 |
| %15 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"; |
| |
| // The back-edge in this test is bad, but the validator fails to identify it |
| // because it is in an entirely unreachable section of code. Prior to #2488 |
| // this code failed an assert in Construct::blocks(). |
| CompileSuccessfully(text); |
| EXPECT_EQ(SPV_SUCCESS, ValidateInstructions()); |
| } |
| |
| TEST_F(ValidateCFG, OneContinueTwoBackedges) { |
| const std::string text = R"( |
| OpCapability Shader |
|