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Differential D131966 Diff 453235 llvm/lib/CodeGen/TypePromotion.cpp

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llvm/lib/CodeGen/TypePromotion.cpp

Show First 20 Lines • Show All 946 Lines • ▼ Show 20 Lines for (Instruction &I : BB) {
continue; continue;
if (isa<ZExtInst>(&I) && isa<PHINode>(I.getOperand(0)) && if (isa<ZExtInst>(&I) && isa<PHINode>(I.getOperand(0)) &&
isa<IntegerType>(I.getType()) && BBIsInLoop(&BB)) { isa<IntegerType>(I.getType()) && BBIsInLoop(&BB)) {
LLVM_DEBUG(dbgs() << "IR Promotion: Searching from: " << I.getOperand(0) LLVM_DEBUG(dbgs() << "IR Promotion: Searching from: " << I.getOperand(0)
<< "\n"); << "\n");
EVT ZExtVT = TLI->getValueType(DL, I.getType()); EVT ZExtVT = TLI->getValueType(DL, I.getType());
Instruction *Phi = static_cast<Instruction *>(I.getOperand(0)); Instruction *Phi = static_cast<Instruction *>(I.getOperand(0));
MadeChange |= TryToPromote(Phi, ZExtVT.getFixedSizeInBits()); auto PromoteWidth = ZExtVT.getFixedSizeInBits();
if (RegisterBitWidth < PromoteWidth) {
LLVM_DEBUG(dbgs() << "IR Promotion: Couldn't find target "
<< "register for ZExt type\n");
continue;
}
MadeChange |= TryToPromote(Phi, PromoteWidth);
} else if (auto *ICmp = dyn_cast<ICmpInst>(&I)) { } else if (auto *ICmp = dyn_cast<ICmpInst>(&I)) {
// Search up from icmps to try to promote their operands. // Search up from icmps to try to promote their operands.
// Skip signed or pointer compares // Skip signed or pointer compares
if (ICmp->isSigned()) if (ICmp->isSigned())
continue; continue;
LLVM_DEBUG(dbgs() << "IR Promotion: Searching from: " << *ICmp << "\n"); LLVM_DEBUG(dbgs() << "IR Promotion: Searching from: " << *ICmp << "\n");
Show All 30 Lines