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authorStephen Hines <srhines@google.com>2012-08-23 19:08:53 -0700
committerStephen Hines <srhines@google.com>2012-08-23 19:08:53 -0700
commit31675153bd2d7617db8cb6aeb58054934c7b9f73 (patch)
treec1970fcebc736d4f731db0559a79a7ac5cb0f8bf /lib/Target/ARM/Thumb2InstrInfo.cpp
parent416bb6a168a9316547db6ce3909c515f70a84f52 (diff)
parent75dd7f0c4a2b3fb9e9d4d5a0517591810c57ed92 (diff)
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Merge branch 'upstream' into merge_2
Conflicts: lib/Target/ARM/ARMCodeEmitter.cpp Change-Id: I6702d340c733e9721499b5d85b13b96ad9c14eb5
Diffstat (limited to 'lib/Target/ARM/Thumb2InstrInfo.cpp')
-rw-r--r--lib/Target/ARM/Thumb2InstrInfo.cpp42
1 files changed, 0 insertions, 42 deletions
diff --git a/lib/Target/ARM/Thumb2InstrInfo.cpp b/lib/Target/ARM/Thumb2InstrInfo.cpp
index 2097bb9..e9e20dd 100644
--- a/lib/Target/ARM/Thumb2InstrInfo.cpp
+++ b/lib/Target/ARM/Thumb2InstrInfo.cpp
@@ -563,48 +563,6 @@ bool llvm::rewriteT2FrameIndex(MachineInstr &MI, unsigned FrameRegIdx,
return Offset == 0;
}
-/// scheduleTwoAddrSource - Schedule the copy / re-mat of the source of the
-/// two-addrss instruction inserted by two-address pass.
-void
-Thumb2InstrInfo::scheduleTwoAddrSource(MachineInstr *SrcMI,
- MachineInstr *UseMI,
- const TargetRegisterInfo &TRI) const {
- if (SrcMI->getOpcode() != ARM::tMOVr || SrcMI->getOperand(1).isKill())
- return;
-
- unsigned PredReg = 0;
- ARMCC::CondCodes CC = getInstrPredicate(UseMI, PredReg);
- if (CC == ARMCC::AL || PredReg != ARM::CPSR)
- return;
-
- // Schedule the copy so it doesn't come between previous instructions
- // and UseMI which can form an IT block.
- unsigned SrcReg = SrcMI->getOperand(1).getReg();
- ARMCC::CondCodes OCC = ARMCC::getOppositeCondition(CC);
- MachineBasicBlock *MBB = UseMI->getParent();
- MachineBasicBlock::iterator MBBI = SrcMI;
- unsigned NumInsts = 0;
- while (--MBBI != MBB->begin()) {
- if (MBBI->isDebugValue())
- continue;
-
- MachineInstr *NMI = &*MBBI;
- ARMCC::CondCodes NCC = getInstrPredicate(NMI, PredReg);
- if (!(NCC == CC || NCC == OCC) ||
- NMI->modifiesRegister(SrcReg, &TRI) ||
- NMI->modifiesRegister(ARM::CPSR, &TRI))
- break;
- if (++NumInsts == 4)
- // Too many in a row!
- return;
- }
-
- if (NumInsts) {
- MBB->remove(SrcMI);
- MBB->insert(++MBBI, SrcMI);
- }
-}
-
ARMCC::CondCodes
llvm::getITInstrPredicate(const MachineInstr *MI, unsigned &PredReg) {
unsigned Opc = MI->getOpcode();