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Add bundle aware API for querying instruction properties and switch the code

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generator to it. For non-bundle instructions, these behave exactly the same
as the MC layer API.

For properties like mayLoad / mayStore, look into the bundle and if any of the
bundled instructions has the property it would return true.
For properties like isPredicable, only return true if *all* of the bundled
instructions have the property.
For properties like canFoldAsLoad, isCompare, conservatively return false for
bundles.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146026 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2011-12-07 07:15:52 +00:00
parent 5729c5848c
commit 5a96b3dad2
69 changed files with 596 additions and 354 deletions
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2
lib/Target/MSP430/MSP430FrameLowering.cpp
View File

@@ -140,7 +140,7 @@ void MSP430FrameLowering::emitEpilogue(MachineFunction &MF,
while (MBBI != MBB.begin()) {
MachineBasicBlock::iterator PI = prior(MBBI);
unsigned Opc = PI->getOpcode();
if (Opc != MSP430::POP16r && !PI->getDesc().isTerminator())
if (Opc != MSP430::POP16r && !PI->isTerminator())
break;
--MBBI;
}

9
lib/Target/MSP430/MSP430InstrInfo.cpp
View File

@@ -158,13 +158,12 @@ ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const {
}
bool MSP430InstrInfo::isUnpredicatedTerminator(const MachineInstr *MI) const {
const MCInstrDesc &MCID = MI->getDesc();
if (!MCID.isTerminator()) return false;
if (!MI->isTerminator()) return false;
// Conditional branch is a special case.
if (MCID.isBranch() && !MCID.isBarrier())
if (MI->isBranch() && !MI->isBarrier())
return true;
if (!MCID.isPredicable())
if (!MI->isPredicable())
return true;
return !isPredicated(MI);
}
@@ -189,7 +188,7 @@ bool MSP430InstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,
// A terminator that isn't a branch can't easily be handled
// by this analysis.
if (!I->getDesc().isBranch())
if (!I->isBranch())
return true;
// Cannot handle indirect branches.