diff options
Diffstat (limited to 'lib/Transforms/InstCombine/InstCombineCasts.cpp')
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineCasts.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineCasts.cpp b/lib/Transforms/InstCombine/InstCombineCasts.cpp index 766939c56dff..38e95fb11639 100644 --- a/lib/Transforms/InstCombine/InstCombineCasts.cpp +++ b/lib/Transforms/InstCombine/InstCombineCasts.cpp @@ -661,7 +661,7 @@ Instruction *InstCombiner::transformZExtICmp(ICmpInst *ICI, ZExtInst &CI, // zext (x <s 0) to i32 --> x>>u31 true if signbit set. // zext (x >s -1) to i32 --> (x>>u31)^1 true if signbit clear. - if ((ICI->getPredicate() == ICmpInst::ICMP_SLT && Op1CV == 0) || + if ((ICI->getPredicate() == ICmpInst::ICMP_SLT && Op1CV.isNullValue()) || (ICI->getPredicate() == ICmpInst::ICMP_SGT && Op1CV.isAllOnesValue())) { if (!DoTransform) return ICI; @@ -688,7 +688,7 @@ Instruction *InstCombiner::transformZExtICmp(ICmpInst *ICI, ZExtInst &CI, // zext (X != 0) to i32 --> X>>1 iff X has only the 2nd bit set. // zext (X != 1) to i32 --> X^1 iff X has only the low bit set. // zext (X != 2) to i32 --> (X>>1)^1 iff X has only the 2nd bit set. - if ((Op1CV == 0 || Op1CV.isPowerOf2()) && + if ((Op1CV.isNullValue() || Op1CV.isPowerOf2()) && // This only works for EQ and NE ICI->isEquality()) { // If Op1C some other power of two, convert: @@ -699,7 +699,7 @@ Instruction *InstCombiner::transformZExtICmp(ICmpInst *ICI, ZExtInst &CI, if (!DoTransform) return ICI; bool isNE = ICI->getPredicate() == ICmpInst::ICMP_NE; - if (Op1CV != 0 && (Op1CV != KnownZeroMask)) { + if (!Op1CV.isNullValue() && (Op1CV != KnownZeroMask)) { // (X&4) == 2 --> false // (X&4) != 2 --> true Constant *Res = ConstantInt::get(Type::getInt1Ty(CI.getContext()), @@ -717,7 +717,7 @@ Instruction *InstCombiner::transformZExtICmp(ICmpInst *ICI, ZExtInst &CI, In->getName() + ".lobit"); } - if ((Op1CV != 0) == isNE) { // Toggle the low bit. + if (!Op1CV.isNullValue() == isNE) { // Toggle the low bit. Constant *One = ConstantInt::get(In->getType(), 1); In = Builder->CreateXor(In, One); } |