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| author | Chris Lattner <sabre@nondot.org> | 2006-09-18 18:27:05 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2006-09-18 18:27:05 +0000 |
| commit | de0779259569d61e93152e644c233ff2fd3c1776 (patch) | |
| tree | 4113761e7e3dd5355c661788b8fca00e8cce91d8 /llvm/lib/Transforms/Scalar | |
| parent | 3425123ceda06c4eee12ba840752dc18ef3ba6ad (diff) | |
| download | bcm5719-llvm-de0779259569d61e93152e644c233ff2fd3c1776.tar.gz bcm5719-llvm-de0779259569d61e93152e644c233ff2fd3c1776.zip | |
Fix an infinite loop building the CFE
llvm-svn: 30465
Diffstat (limited to 'llvm/lib/Transforms/Scalar')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/InstructionCombining.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp index c3d6f1465eb..7a3b97783b2 100644 --- a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp @@ -3988,7 +3988,8 @@ Instruction *InstCombiner::visitSetCondInst(SetCondInst &I) { // preferable because it allows the C<<Y expression to be hoisted out // of a loop if Y is invariant and X is not. if (Shift && Shift->hasOneUse() && CI->isNullValue() && - I.isEquality() && !Shift->isArithmeticShift()) { + I.isEquality() && !Shift->isArithmeticShift() && + isa<Instruction>(Shift->getOperand(0))) { // Compute C << Y. Value *NS; if (Shift->getOpcode() == Instruction::Shr) { |
