Add support for OpUndef
Treat OpUndef identically to OpConstantNull for now.
Change-Id: I721f2bf5e053d6a8d6f563272b1d44b6636a157c
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/27529
Tested-by: Chris Forbes <chrisforbes@google.com>
Presubmit-Ready: Chris Forbes <chrisforbes@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
diff --git a/src/Pipeline/SpirvShader.cpp b/src/Pipeline/SpirvShader.cpp
index bc1a29d..7a858b0 100644
--- a/src/Pipeline/SpirvShader.cpp
+++ b/src/Pipeline/SpirvShader.cpp
@@ -215,7 +215,9 @@
CreateConstant(insn).constantValue[0] = ~0u; // represent boolean true as all bits set
break;
case spv::OpConstantNull:
+ case spv::OpUndef:
{
+ // TODO: consider a real LLVM-level undef. For now, zero is a perfectly good value.
// OpConstantNull forms a constant of arbitrary type, all zeros.
auto &object = CreateConstant(insn);
auto &objectTy = getType(object.type);
@@ -1062,6 +1064,7 @@
case spv::OpConstantTrue:
case spv::OpConstantFalse:
case spv::OpConstantComposite:
+ case spv::OpUndef:
case spv::OpExtension:
case spv::OpCapability:
case spv::OpEntryPoint:
