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authorEvan Cheng <evan.cheng@apple.com>2011-12-07 07:15:52 +0000
committerEvan Cheng <evan.cheng@apple.com>2011-12-07 07:15:52 +0000
commit5a96b3dad2f634c9081c8b2b6c2575441dc5a2bd (patch)
tree88fa5be8f6cf6e9a222e79c8806f29c8841925d1 /lib/CodeGen/IfConversion.cpp
parent5729c5848c74a2413cc1d32a5f3c746aff5d9ccc (diff)
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Add bundle aware API for querying instruction properties and switch the code
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
Diffstat (limited to 'lib/CodeGen/IfConversion.cpp')
-rw-r--r--lib/CodeGen/IfConversion.cpp12
1 files changed, 5 insertions, 7 deletions
diff --git a/lib/CodeGen/IfConversion.cpp b/lib/CodeGen/IfConversion.cpp
index d888939d4c..bd31fdf53a 100644
--- a/lib/CodeGen/IfConversion.cpp
+++ b/lib/CodeGen/IfConversion.cpp
@@ -573,12 +573,12 @@ bool IfConverter::ValidDiamond(BBInfo &TrueBBI, BBInfo &FalseBBI,
// blocks, move the end iterators up past any branch instructions.
while (TIE != TIB) {
--TIE;
- if (!TIE->getDesc().isBranch())
+ if (!TIE->isBranch())
break;
}
while (FIE != FIB) {
--FIE;
- if (!FIE->getDesc().isBranch())
+ if (!FIE->isBranch())
break;
}
@@ -651,12 +651,11 @@ void IfConverter::ScanInstructions(BBInfo &BBI) {
if (I->isDebugValue())
continue;
- const MCInstrDesc &MCID = I->getDesc();
- if (MCID.isNotDuplicable())
+ if (I->isNotDuplicable())
BBI.CannotBeCopied = true;
bool isPredicated = TII->isPredicated(I);
- bool isCondBr = BBI.IsBrAnalyzable && MCID.isConditionalBranch();
+ bool isCondBr = BBI.IsBrAnalyzable && I->isConditionalBranch();
if (!isCondBr) {
if (!isPredicated) {
@@ -1395,9 +1394,8 @@ void IfConverter::CopyAndPredicateBlock(BBInfo &ToBBI, BBInfo &FromBBI,
for (MachineBasicBlock::iterator I = FromBBI.BB->begin(),
E = FromBBI.BB->end(); I != E; ++I) {
- const MCInstrDesc &MCID = I->getDesc();
// Do not copy the end of the block branches.
- if (IgnoreBr && MCID.isBranch())
+ if (IgnoreBr && I->isBranch())
break;
MachineInstr *MI = MF.CloneMachineInstr(I);