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| author | Chris Lattner <sabre@nondot.org> | 2009-07-02 16:04:08 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-07-02 16:04:08 +0000 |
| commit | 0dabb0b177089202dae485d085ed15bd41ef29e6 (patch) | |
| tree | f6af608c67c6d32df015a1e0ba928622193886ad /lib/Analysis/ValueTracking.cpp | |
| parent | 62c762f329cb16783f19b075bb2fefe35b5d5879 (diff) | |
| download | llvm-0dabb0b177089202dae485d085ed15bd41ef29e6.tar.gz llvm-0dabb0b177089202dae485d085ed15bd41ef29e6.tar.bz2 llvm-0dabb0b177089202dae485d085ed15bd41ef29e6.tar.xz | |
do not try to analyze bitcasts from i64 to <2 x i32> in ComputedMaskedBits. While
we could do this, doing so requires adjusting the demanded mask and the code isn't
doing that yet. This fixes PR4495
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74699 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | lib/Analysis/ValueTracking.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp index 7509e91bdc..07a18fe4de 100644 --- a/lib/Analysis/ValueTracking.cpp +++ b/lib/Analysis/ValueTracking.cpp @@ -249,7 +249,10 @@ void llvm::ComputeMaskedBits(Value *V, const APInt &Mask, } case Instruction::BitCast: { const Type *SrcTy = I->getOperand(0)->getType(); - if (SrcTy->isInteger() || isa<PointerType>(SrcTy)) { + if ((SrcTy->isInteger() || isa<PointerType>(SrcTy)) && + // TODO: For now, not handling conversions like: + // (bitcast i64 %x to <2 x i32>) + !isa<VectorType>(I->getType())) { ComputeMaskedBits(I->getOperand(0), Mask, KnownZero, KnownOne, TD, Depth+1); return; |