diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp index 32821e6d9de..5ac2076f897 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp @@ -3264,6 +3264,18 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) { break; } + case Intrinsic::amdgcn_cvt_pknorm_i16: + case Intrinsic::amdgcn_cvt_pknorm_u16: + case Intrinsic::amdgcn_cvt_pk_i16: + case Intrinsic::amdgcn_cvt_pk_u16: { + Value *Src0 = II->getArgOperand(0); + Value *Src1 = II->getArgOperand(1); + + if (isa<UndefValue>(Src0) && isa<UndefValue>(Src1)) + return replaceInstUsesWith(*II, UndefValue::get(II->getType())); + + break; + } case Intrinsic::amdgcn_ubfe: case Intrinsic::amdgcn_sbfe: { // Decompose simple cases into standard shifts. |
