[llvm-commits] [llvm] r122204 - /llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp
Chris Lattner
sabre at nondot.org
Sun Dec 19 15:24:04 PST 2010
Author: lattner
Date: Sun Dec 19 17:24:04 2010
New Revision: 122204
URL: http://llvm.org/viewvc/llvm-project?rev=122204&view=rev
Log:
fix an oversight caught by Frits!
Modified:
llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp
Modified: llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp?rev=122204&r1=122203&r2=122204&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp (original)
+++ llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp Sun Dec 19 17:24:04 2010
@@ -1151,9 +1151,10 @@
// If the normal result of the add is dead, and the RHS is a constant,
// we can transform this into a range comparison.
// overflow = uadd a, -4 --> overflow = icmp ugt a, 3
- if (ConstantInt *CI = dyn_cast<ConstantInt>(II->getArgOperand(1)))
- return new ICmpInst(ICmpInst::ICMP_UGT, II->getArgOperand(0),
- ConstantExpr::getNot(CI));
+ if (II->getIntrinsicID() == Intrinsic::uadd_with_overflow)
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(II->getArgOperand(1)))
+ return new ICmpInst(ICmpInst::ICMP_UGT, II->getArgOperand(0),
+ ConstantExpr::getNot(CI));
break;
case Intrinsic::usub_with_overflow:
case Intrinsic::ssub_with_overflow:
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