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Emit COPY instructions instead of using copyRegToReg in InstrEmitter,

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ScheduleDAGEmit, TwoAddressLowering, and PHIElimination.

This switches the bulk of register copies to using COPY, but many less used
copyRegToReg calls remain.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108050 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2010-07-10 19:08:25 +00:00
parent 3732396fe1
commit 92c1f72c54
4 changed files with 22 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
lib/CodeGen/ScheduleDAGEmit.cpp
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@ -50,11 +50,8 @@ void ScheduleDAG::EmitPhysRegCopy(SUnit *SU,
break;
}
}
bool Success = TII->copyRegToReg(*BB, InsertPos, Reg, VRI->second,
SU->CopyDstRC, SU->CopySrcRC,
DebugLoc());
(void)Success;
assert(Success && "copyRegToReg failed!");
BuildMI(*BB, InsertPos, DebugLoc(), TII->get(TargetOpcode::COPY), Reg)
.addReg(VRI->second);
} else {
// Copy from physical register.
assert(I->getReg() && "Unknown physical register!");
@ -62,11 +59,8 @@ void ScheduleDAG::EmitPhysRegCopy(SUnit *SU,
bool isNew = VRBaseMap.insert(std::make_pair(SU, VRBase)).second;
isNew = isNew; // Silence compiler warning.
assert(isNew && "Node emitted out of order - early");
bool Success = TII->copyRegToReg(*BB, InsertPos, VRBase, I->getReg(),
SU->CopyDstRC, SU->CopySrcRC,
DebugLoc());
(void)Success;
assert(Success && "copyRegToReg failed!");
BuildMI(*BB, InsertPos, DebugLoc(), TII->get(TargetOpcode::COPY), VRBase)
.addReg(I->getReg());
}
break;
}