diff options
Diffstat (limited to 'lib/VMCore/ConstantFold.cpp')
| -rw-r--r-- | lib/VMCore/ConstantFold.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp index 46263060e5..ed69814383 100644 --- a/lib/VMCore/ConstantFold.cpp +++ b/lib/VMCore/ConstantFold.cpp @@ -554,6 +554,7 @@ Constant *llvm::ConstantFoldBinaryInstruction(unsigned Opcode, if (C2->isNullValue()) return const_cast<Constant*>(C1); // X ^ 0 == X break; case Instruction::AShr: + // ashr (zext C to Ty), C2 -> lshr (zext C, CSA), C2 if (CE1->getOpcode() == Instruction::ZExt) // Top bits known zero. return ConstantExpr::getLShr(const_cast<Constant*>(C1), const_cast<Constant*>(C2)); |