diff options
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp index b2282cfd419..3a5debc3223 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp @@ -3539,6 +3539,14 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) { return replaceInstUsesWith(*II, II->getArgOperand(0)); } + case Intrinsic::amdgcn_kill: { + const ConstantInt *C = dyn_cast<ConstantInt>(II->getArgOperand(0)); + if (!C || !C->getZExtValue()) + break; + + // amdgcn.kill(i1 1) is a no-op + return eraseInstFromFunction(CI); + } case Intrinsic::stackrestore: { // If the save is right next to the restore, remove the restore. This can // happen when variable allocas are DCE'd. |
