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Add the same optimization that we do loading from fixed alloca slots to
storing to fixed alloca slots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18221 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -2989,6 +2989,8 @@ void PPC32ISel::visitLoadInst(LoadInst &I) {
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if (Class == cShort && I.getType()->isSigned()) ImmOpcode = PPC::LHA;
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if (Class == cShort && I.getType()->isSigned()) IdxOpcode = PPC::LHAX;
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// If this is a fixed size alloca, emit a load directly from the stack slot
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// corresponding to it.
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if (AllocaInst *AI = dyn_castFixedAlloca(SourceAddr)) {
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unsigned FI = getFixedSizedAllocaFI(AI);
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if (Class == cLong) {
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@ -3071,6 +3073,16 @@ void PPC32ISel::visitStoreInst(StoreInst &I) {
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unsigned IdxOpcode = IdxOpcodes[Class];
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unsigned ValReg = getReg(I.getOperand(0));
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// If this is a fixed size alloca, emit a store directly to the stack slot
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// corresponding to it.
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if (AllocaInst *AI = dyn_castFixedAlloca(SourceAddr)) {
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unsigned FI = getFixedSizedAllocaFI(AI);
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addFrameReference(BuildMI(BB, ImmOpcode, 3).addReg(ValReg), FI);
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if (Class == cLong)
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addFrameReference(BuildMI(BB, ImmOpcode, 3).addReg(ValReg+1), FI, 4);
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return;
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}
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// If the offset fits in 16 bits, we can emit a reg+imm store, otherwise, we
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// use the index from the FoldedGEP struct and use reg+reg addressing.
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if (GetElementPtrInst *GEPI = canFoldGEPIntoLoadOrStore(SourceAddr)) {
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