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author | Evan Cheng <evan.cheng@apple.com> | 2011-12-07 07:15:52 +0000 |
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committer | Evan Cheng <evan.cheng@apple.com> | 2011-12-07 07:15:52 +0000 |
commit | 5a96b3dad2f634c9081c8b2b6c2575441dc5a2bd (patch) | |
tree | 88fa5be8f6cf6e9a222e79c8806f29c8841925d1 /lib/CodeGen/IfConversion.cpp | |
parent | 5729c5848c74a2413cc1d32a5f3c746aff5d9ccc (diff) | |
download | llvm-5a96b3dad2f634c9081c8b2b6c2575441dc5a2bd.tar.gz llvm-5a96b3dad2f634c9081c8b2b6c2575441dc5a2bd.tar.bz2 llvm-5a96b3dad2f634c9081c8b2b6c2575441dc5a2bd.tar.xz |
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.cpp | 12 |
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); |