diff options
| -rw-r--r-- | llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp | 10 | ||||
| -rw-r--r-- | llvm/test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll | 7 |
2 files changed, 13 insertions, 4 deletions
diff --git a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp index ef836304c14..a5f62cf0f39 100644 --- a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp +++ b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp @@ -318,12 +318,14 @@ bool IRTranslator::translate(const Instruction &Inst) { } bool IRTranslator::translate(const Constant &C, unsigned Reg) { - if (auto CI = dyn_cast<ConstantInt>(&C)) { + if (auto CI = dyn_cast<ConstantInt>(&C)) EntryBuilder.buildConstant(LLT{*CI->getType()}, Reg, CI->getZExtValue()); - return true; - } + else if (isa<UndefValue>(C)) + EntryBuilder.buildInstr(TargetOpcode::IMPLICIT_DEF).addDef(Reg); + else + llvm_unreachable("unhandled constant kind"); - llvm_unreachable("unhandled constant kind"); + return true; } diff --git a/llvm/test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll b/llvm/test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll index 7546cfa77d5..e63b8515ba1 100644 --- a/llvm/test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll +++ b/llvm/test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll @@ -363,3 +363,10 @@ define i32 @constant_int_start() { %res = add i32 2, 42 ret i32 %res } + +; CHECK-LABEL: name: test_undef +; CHECK: [[UNDEF:%[0-9]+]](32) = IMPLICIT_DEF +; CHECK: %w0 = COPY [[UNDEF]] +define i32 @test_undef() { + ret i32 undef +} |
