diff options
Diffstat (limited to 'llvm/lib/Analysis/CmpInstAnalysis.cpp')
| -rw-r--r-- | llvm/lib/Analysis/CmpInstAnalysis.cpp | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/llvm/lib/Analysis/CmpInstAnalysis.cpp b/llvm/lib/Analysis/CmpInstAnalysis.cpp index 5b951980a0aa..20b1df6e1495 100644 --- a/llvm/lib/Analysis/CmpInstAnalysis.cpp +++ b/llvm/lib/Analysis/CmpInstAnalysis.cpp @@ -18,9 +18,7 @@ using namespace llvm; -unsigned llvm::getICmpCode(const ICmpInst *ICI, bool InvertPred) { - ICmpInst::Predicate Pred = InvertPred ? ICI->getInversePredicate() - : ICI->getPredicate(); +unsigned llvm::getICmpCode(CmpInst::Predicate Pred) { switch (Pred) { // False -> 0 case ICmpInst::ICMP_UGT: return 1; // 001 @@ -63,6 +61,18 @@ bool llvm::predicatesFoldable(ICmpInst::Predicate P1, ICmpInst::Predicate P2) { (CmpInst::isSigned(P2) && ICmpInst::isEquality(P1)); } +Constant *llvm::getPredForFCmpCode(unsigned Code, Type *OpTy, + CmpInst::Predicate &Pred) { + Pred = static_cast<FCmpInst::Predicate>(Code); + assert(FCmpInst::FCMP_FALSE <= Pred && Pred <= FCmpInst::FCMP_TRUE && + "Unexpected FCmp predicate!"); + if (Pred == FCmpInst::FCMP_FALSE) + return ConstantInt::get(CmpInst::makeCmpResultType(OpTy), 0); + if (Pred == FCmpInst::FCMP_TRUE) + return ConstantInt::get(CmpInst::makeCmpResultType(OpTy), 1); + return nullptr; +} + bool llvm::decomposeBitTestICmp(Value *LHS, Value *RHS, CmpInst::Predicate &Pred, Value *&X, APInt &Mask, bool LookThruTrunc) { |