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| author | Evan Cheng <evan.cheng@apple.com> | 2011-01-07 23:50:32 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2011-01-07 23:50:32 +0000 |
| commit | c36b7069b42bece963b7e6adf020353ce990ef76 (patch) | |
| tree | fdbe6e1cede36ae3485403b9165bfdc039056eeb /lib/Target/MBlaze/MBlazeDelaySlotFiller.cpp | |
| parent | 067a16c974fef473fd3bca1d58db0d50c59882ce (diff) | |
| download | llvm-c36b7069b42bece963b7e6adf020353ce990ef76.tar.gz llvm-c36b7069b42bece963b7e6adf020353ce990ef76.tar.bz2 llvm-c36b7069b42bece963b7e6adf020353ce990ef76.tar.xz | |
Do not model all INLINEASM instructions as having unmodelled side effects.
Instead encode llvm IR level property "HasSideEffects" in an operand (shared
with IsAlignStack). Added MachineInstrs::hasUnmodeledSideEffects() to check
the operand when the instruction is an INLINEASM.
This allows memory instructions to be moved around INLINEASM instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123044 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/MBlaze/MBlazeDelaySlotFiller.cpp')
| -rw-r--r-- | lib/Target/MBlaze/MBlazeDelaySlotFiller.cpp | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/lib/Target/MBlaze/MBlazeDelaySlotFiller.cpp b/lib/Target/MBlaze/MBlazeDelaySlotFiller.cpp index f38f90b8f8..4399ee2800 100644 --- a/lib/Target/MBlaze/MBlazeDelaySlotFiller.cpp +++ b/lib/Target/MBlaze/MBlazeDelaySlotFiller.cpp @@ -187,9 +187,8 @@ static bool isDelayFiller(MachineBasicBlock &MBB, return (brdesc.hasDelaySlot()); } -static bool hasUnknownSideEffects(MachineBasicBlock::iterator &I, - TargetInstrDesc &desc) { - if (!desc.hasUnmodeledSideEffects()) +static bool hasUnknownSideEffects(MachineBasicBlock::iterator &I) { + if (!I->hasUnmodeledSideEffects()) return false; unsigned op = I->getOpcode(); @@ -215,7 +214,7 @@ findDelayInstr(MachineBasicBlock &MBB,MachineBasicBlock::iterator slot) { TargetInstrDesc desc = I->getDesc(); if (desc.hasDelaySlot() || desc.isBranch() || isDelayFiller(MBB,I) || desc.isCall() || desc.isReturn() || desc.isBarrier() || - hasUnknownSideEffects(I,desc)) + hasUnknownSideEffects(I)) break; if (hasImmInstruction(I) || delayHasHazard(I,slot)) |