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Remove the writeback flag from ARM's address mode 4. Now that we have separate

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instructions for ld/st with writeback, the flag is completely redundant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98643 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson
2010-03-16 17:46:45 +00:00
parent 9e54b6ab3f
commit ab3460519e
8 changed files with 11 additions and 23 deletions
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3
lib/Target/ARM/ARMLoadStoreOptimizer.cpp
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@ -505,7 +505,6 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLSMultiple(MachineBasicBlock &MBB,
if (MI->getOperand(i).getReg() == Base)
return false;
}
assert(!ARM_AM::getAM4WBFlag(MI->getOperand(1).getImm()));
Mode = ARM_AM::getAM4SubMode(MI->getOperand(1).getImm());
} else {
// VLDM{D|S}, VSTM{D|S} addressing mode 5 ops.
@ -573,7 +572,7 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLSMultiple(MachineBasicBlock &MBB,
.addReg(Base, getKillRegState(BaseKill));
if (isAM4) {
// [t2]LDM_UPD, [t2]STM_UPD
MIB.addImm(ARM_AM::getAM4ModeImm(Mode, true))
MIB.addImm(ARM_AM::getAM4ModeImm(Mode))
.addImm(Pred).addReg(PredReg);
} else {
// VLDM[SD}_UPD, VSTM[SD]_UPD