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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/CriticalAntiDepBreaker.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/CriticalAntiDepBreaker.cpp')
-rw-r--r-- | lib/CodeGen/CriticalAntiDepBreaker.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/CodeGen/CriticalAntiDepBreaker.cpp b/lib/CodeGen/CriticalAntiDepBreaker.cpp index 84c4d59c0e..128143e70f 100644 --- a/lib/CodeGen/CriticalAntiDepBreaker.cpp +++ b/lib/CodeGen/CriticalAntiDepBreaker.cpp @@ -54,7 +54,7 @@ void CriticalAntiDepBreaker::StartBlock(MachineBasicBlock *BB) { // Clear "do not change" set. KeepRegs.clear(); - bool IsReturnBlock = (!BB->empty() && BB->back().getDesc().isReturn()); + bool IsReturnBlock = (!BB->empty() && BB->back().isReturn()); // Determine the live-out physregs for this block. if (IsReturnBlock) { @@ -193,8 +193,8 @@ void CriticalAntiDepBreaker::PrescanInstruction(MachineInstr *MI) { // instruction which may not be executed. The second R6 def may or may not // re-define R6 so it's not safe to change it since the last R6 use cannot be // changed. - bool Special = MI->getDesc().isCall() || - MI->getDesc().hasExtraSrcRegAllocReq() || + bool Special = MI->isCall() || + MI->hasExtraSrcRegAllocReq() || TII->isPredicated(MI); // Scan the register operands for this instruction and update @@ -572,7 +572,7 @@ BreakAntiDependencies(const std::vector<SUnit>& SUnits, // If MI's defs have a special allocation requirement, don't allow // any def registers to be changed. Also assume all registers // defined in a call must not be changed (ABI). - if (MI->getDesc().isCall() || MI->getDesc().hasExtraDefRegAllocReq() || + if (MI->isCall() || MI->hasExtraDefRegAllocReq() || TII->isPredicated(MI)) // If this instruction's defs have special allocation requirement, don't // break this anti-dependency. |