AMDGPU: Add intrinsics llvm.amdgcn.cvt.{pknorm.i16, pknorm.u16, pk.i16, pk.u16}
Reviewers: arsenm, nhaehnle
Subscribers: kzhuravl, wdng, yaxunl, dstuttard, tpr, t-tye
Differential Revision: https://reviews.llvm.org/D41663
llvm-svn: 323908
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index 32821e6..5ac2076 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -3264,6 +3264,18 @@
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.