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MBlaze delay slot filler was not capable of using ADDK and variants to fill delay slots. This broke several test cases when 121649 was committed. This fixes the regression.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121650 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Wesley Peck 2010-12-12 22:22:49 +00:00
parent a7c7b9dccb
commit 8f40b24ca1
1 changed files with 18 additions and 1 deletions
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19
lib/Target/MBlaze/MBlazeDelaySlotFiller.cpp
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@ -167,6 +167,23 @@ static bool isDelayFiller(MachineBasicBlock &MBB,
return (brdesc.hasDelaySlot());
}
static bool hasUnknownSideEffects(MachineBasicBlock::iterator &I,
TargetInstrDesc &desc) {
if (!desc.hasUnmodeledSideEffects())
return false;
unsigned op = I->getOpcode();
if (op == MBlaze::ADDK || op == MBlaze::ADDIK ||
op == MBlaze::ADDC || op == MBlaze::ADDIC ||
op == MBlaze::ADDKC || op == MBlaze::ADDIKC ||
op == MBlaze::RSUBK || op == MBlaze::RSUBIK ||
op == MBlaze::RSUBC || op == MBlaze::RSUBIC ||
op == MBlaze::RSUBKC || op == MBlaze::RSUBIKC)
return false;
return true;
}
static MachineBasicBlock::iterator
findDelayInstr(MachineBasicBlock &MBB,MachineBasicBlock::iterator slot) {
MachineBasicBlock::iterator I = slot;
@ -178,7 +195,7 @@ findDelayInstr(MachineBasicBlock &MBB,MachineBasicBlock::iterator slot) {
TargetInstrDesc desc = I->getDesc();
if (desc.hasDelaySlot() || desc.isBranch() || isDelayFiller(MBB,I) ||
desc.isCall() || desc.isReturn() || desc.isBarrier() ||
desc.hasUnmodeledSideEffects())
hasUnknownSideEffects(I,desc))
break;
if (hasImmInstruction(I) || delayHasHazard(I,slot))