diff options
| author | Chris Lattner <sabre@nondot.org> | 2009-03-17 23:58:30 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-03-17 23:58:30 +0000 |
| commit | b7e64ac3acac46ed42b5d099d59af73bedabb6fc (patch) | |
| tree | f0b4db3daf95465027fc9ca8613f09b9133b3f41 /lib/Transforms | |
| parent | 152932b71c488a6522c541f847eb3081cffb3793 (diff) | |
LSR shouldn't ever try to hack on integer IV's larger than 64-bits. Right now
it is not APInt clean, but even when it is it needs to be evaluated carefully
to determine whether it is actually profitable.
This fixes a crash on PR3806
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67134 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
| -rw-r--r-- | lib/Transforms/Scalar/LoopStrengthReduce.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp index 79512980a4..6401a4c36a 100644 --- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp @@ -592,6 +592,12 @@ bool LoopStrengthReduce::AddUsersIfInteresting(Instruction *I, Loop *L, SmallPtrSet<Instruction*,16> &Processed) { if (!I->getType()->isInteger() && !isa<PointerType>(I->getType())) return false; // Void and FP expressions cannot be reduced. + + // LSR is not APInt clean, do not touch integers bigger than 64-bits. + if (I->getType()->isInteger() && + I->getType()->getPrimitiveSizeInBits() > 64) + return false; + if (!Processed.insert(I)) return true; // Instruction already handled. |