| ; This check verifies that arguments passed by value get redzones. |
| ; RUN: opt < %s -asan -asan-realign-stack=32 -S | FileCheck %s |
| ; RUN: opt < %s -asan -asan-realign-stack=32 -asan-force-dynamic-shadow -S | FileCheck %s |
| ; RUN: opt < %s -asan -asan-realign-stack=32 -asan-mapping-scale=5 -S | FileCheck %s |
| ; RUN: opt < %s -asan -asan-realign-stack=32 -asan-force-dynamic-shadow -asan-mapping-scale=5 -S | FileCheck %s |
| |
| |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %struct.A = type { [8 x i32] } |
| |
| declare i32 @bar(%struct.A*) |
| |
| ; Test behavior for named argument with explicit alignment. The memcpy and |
| ; alloca alignments should match the explicit alignment of 64. |
| define void @foo(%struct.A* byval align 64 %a) sanitize_address { |
| entry: |
| ; CHECK-LABEL: foo |
| ; CHECK: call i64 @__asan_stack_malloc |
| ; CHECK: alloca i8, i64 {{.*}} align 64 |
| ; CHECK: [[copyPtr:%[^ \t]+]] = inttoptr i64 %{{[^ \t]+}} to %struct.A* |
| ; CHECK: [[copyBytePtr:%[^ \t]+]] = bitcast %struct.A* [[copyPtr]] |
| ; CHECK: [[aBytePtr:%[^ \t]+]] = bitcast %struct.A* %a |
| ; CHECK: call void @llvm.memcpy{{[^%]+}}[[copyBytePtr]]{{[^%]+}} align 64 [[aBytePtr]],{{[^,]+}}, |
| ; CHECK: call i32 @bar(%struct.A* [[copyPtr]]) |
| ; CHECK: ret void |
| |
| %call = call i32 @bar(%struct.A* %a) |
| ret void |
| } |
| |
| ; Test behavior for unnamed argument without explicit alignment. In this case, |
| ; the first argument is referenced by the identifier %0 and the ABI requires a |
| ; minimum alignment of 4 bytes since struct.A contains i32s which have 4-byte |
| ; alignment. However, the alloca alignment will be 32 since that is the value |
| ; passed via the -asan-realign-stack option, which is greater than 4. |
| define void @baz(%struct.A* byval) sanitize_address { |
| entry: |
| ; CHECK-LABEL: baz |
| ; CHECK: call i64 @__asan_stack_malloc |
| ; CHECK: alloca i8, i64 {{.*}} align 32 |
| ; CHECK: [[copyPtr:%[^ \t]+]] = inttoptr i64 %{{[^ \t]+}} to %struct.A* |
| ; CHECK: [[copyBytePtr:%[^ \t]+]] = bitcast %struct.A* [[copyPtr]] |
| ; CHECK: [[aBytePtr:%[^ \t]+]] = bitcast %struct.A* %0 |
| ; CHECK: call void @llvm.memcpy{{[^%]+}}[[copyBytePtr]]{{[^%]+}} align 4 [[aBytePtr]],{{[^,]+}} |
| ; CHECK: call i32 @bar(%struct.A* [[copyPtr]]) |
| ; CHECK: ret void |
| |
| %call = call i32 @bar(%struct.A* %0) |
| ret void |
| } |
