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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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7
lib/CodeGen/RegisterCoalescer.cpp
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@@ -643,8 +643,7 @@ bool RegisterCoalescer::RemoveCopyByCommutingDef(const CoalescerPair &CP,
MachineInstr *DefMI = LIS->getInstructionFromIndex(AValNo->def);
if (!DefMI)
return false;
const MCInstrDesc &MCID = DefMI->getDesc();
if (!MCID.isCommutable())
if (!DefMI->isCommutable())
return false;
// If DefMI is a two-address instruction then commuting it will change the
// destination register.
@@ -802,14 +801,14 @@ bool RegisterCoalescer::ReMaterializeTrivialDef(LiveInterval &SrcInt,
if (!DefMI)
return false;
assert(DefMI && "Defining instruction disappeared");
const MCInstrDesc &MCID = DefMI->getDesc();
if (!MCID.isAsCheapAsAMove())
if (!DefMI->isAsCheapAsAMove())
return false;
if (!TII->isTriviallyReMaterializable(DefMI, AA))
return false;
bool SawStore = false;
if (!DefMI->isSafeToMove(TII, AA, SawStore))
return false;
const MCInstrDesc &MCID = DefMI->getDesc();
if (MCID.getNumDefs() != 1)
return false;
if (!DefMI->isImplicitDef()) {