From fe32e0c578abd1c13a82889217021813d6a29388 Mon Sep 17 00:00:00 2001 From: Chris Lattner <sabre@nondot.org> Date: Wed, 30 Apr 2003 22:19:10 +0000 Subject: [PATCH] Fix constant folding of constexprs git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5971 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Transforms/Scalar/InstructionCombining.cpp | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index 70fc952891f..ad4ef420e9d 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -186,12 +186,9 @@ static inline Value *dyn_castNegVal(Value *V) { if (BinaryOperator::isNeg(V)) return BinaryOperator::getNegArgument(cast<BinaryOperator>(V)); - // Constants can be considered to be negated values... - if (Constant *C = dyn_cast<Constant>(V)) { - Constant *NC = *Constant::getNullValue(V->getType()) - *C; - assert(NC && "Couldn't constant fold a subtract!"); - return NC; - } + // Constants can be considered to be negated values if they can be folded... + if (Constant *C = dyn_cast<Constant>(V)) + return *Constant::getNullValue(V->getType()) - *C; return 0; }