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[NFC] Simplify code in IndVars

This commit is contained in:
Max Kazantsev 2020-10-30 17:37:03 +07:00
parent dba33258ff
commit bd341bafbf
1 changed files with 8 additions and 12 deletions
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20
llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
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@ -1132,18 +1132,14 @@ bool WidenIV::widenWithVariantUse(NarrowIVDefUse DU) {
if (!AddRecOp1 || AddRecOp1->getLoop() != L)
return false;
if (ExtKind == SignExtended) {
for (Use &U : NarrowUse->uses()) {
SExtInst *User = dyn_cast<SExtInst>(U.getUser());
if (!User || User->getType() != WideType)
return false;
}
} else { // ExtKind == ZeroExtended
for (Use &U : NarrowUse->uses()) {
ZExtInst *User = dyn_cast<ZExtInst>(U.getUser());
if (!User || User->getType() != WideType)
return false;
}
for (Use &U : NarrowUse->uses()) {
Instruction *User = nullptr;
if (ExtKind == SignExtended)
User = dyn_cast<SExtInst>(U.getUser());
else
User = dyn_cast<ZExtInst>(U.getUser());
if (!User || User->getType() != WideType)
return false;
}
LLVM_DEBUG(dbgs() << "Cloning arithmetic IVUser: " << *NarrowUse << "\n");