commit 269ffdac4e354b58cb627a45a9ffe01fb967004a
author Matt Arsenault <Matthew.Arsenault@amd.com> Tue Dec 06 23:18:06 2016 +0000
committer Matt Arsenault <Matthew.Arsenault@amd.com> Tue Dec 06 23:18:06 2016 +0000
tree 6271d413ae025608e072a43920a832acfb4c9a4a
parent d0b3c6c8e6cebed16dbe7a28084786ef08f8f3bb

AMDGPU: Fix crash on i16 constant expression

llvm-svn: 288861

llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp

diff --git a/llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp b/llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp
index b427de1..2e8db08 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp
@@ -146,9 +146,10 @@
 
 Value *AMDGPUCodeGenPrepare::copyFlags(
     const BinaryOperator &I, Value *V) const {
-  assert(isa<BinaryOperator>(V) && "V must be binary operation");
+  BinaryOperator *BinOp = dyn_cast<BinaryOperator>(V);
+  if (!BinOp) // Possibly constant expression.
+    return V;
 
-  BinaryOperator *BinOp = cast<BinaryOperator>(V);
   if (isa<OverflowingBinaryOperator>(BinOp)) {
     BinOp->setHasNoSignedWrap(I.hasNoSignedWrap());
     BinOp->setHasNoUnsignedWrap(I.hasNoUnsignedWrap());