// behavior.
// TODO: Factor this out.
if (const CmpInst *CI = dyn_cast<CmpInst>(BI->getCondition())) {
- if (CI->hasOneUse() && (CI->getParent() == I->getParent())) {
- MVT VT;
- const Type *Ty = CI->getOperand(0)->getType();
- if (!isTypeLegal(Ty, VT))
- return false;
-
+ MVT SourceVT;
+ const Type *Ty = CI->getOperand(0)->getType();
+ if (CI->hasOneUse() && (CI->getParent() == I->getParent())
+ && isTypeLegal(Ty, SourceVT)) {
bool isFloat = (Ty->isDoubleTy() || Ty->isFloatTy());
if (isFloat && !Subtarget->hasVFP2())
return false;
unsigned CmpOpc;
- switch (VT.SimpleTy) {
+ switch (SourceVT.SimpleTy) {
default: return false;
// TODO: Verify compares.
case MVT::f32:
}
// Get the compare predicate.
- ARMCC::CondCodes ARMPred = getComparePred(CI->getPredicate());
+ // Try to take advantage of fallthrough opportunities.
+ CmpInst::Predicate Predicate = CI->getPredicate();
+ if (FuncInfo.MBB->isLayoutSuccessor(TBB)) {
+ std::swap(TBB, FBB);
+ Predicate = CmpInst::getInversePredicate(Predicate);
+ }
+
+ ARMCC::CondCodes ARMPred = getComparePred(Predicate);
// We may not handle every CC for now.
if (ARMPred == ARMCC::AL) return false;