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Change MachineInstrBuilder::addDisp to copy over target flags by default. 

llvm-svn: 165677
This commit is contained in:
Evan Cheng 2012-10-11 00:15:48 +00:00
parent e15fb77df8
commit 60a25a571e
2 changed files with 15 additions and 9 deletions
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17
llvm/include/llvm/CodeGen/MachineInstrBuilder.h
View File

@ -176,15 +176,24 @@ public:
}
// Add a displacement from an existing MachineOperand with an added offset.
const MachineInstrBuilder &addDisp(const MachineOperand &Disp,
int64_t off) const {
const MachineInstrBuilder &addDisp(const MachineOperand &Disp, int64_t off,
unsigned char TargetFlags = 0) const {
switch (Disp.getType()) {
default:
llvm_unreachable("Unhandled operand type in addDisp()");
case MachineOperand::MO_Immediate:
return addImm(Disp.getImm() + off);
case MachineOperand::MO_GlobalAddress:
return addGlobalAddress(Disp.getGlobal(), Disp.getOffset() + off);
case MachineOperand::MO_GlobalAddress: {
// If caller specifies new TargetFlags then use it, otherwise the
// default behavior is to copy the target flags from the existing
// MachineOperand. This means if the caller wants to clear the
// target flags it needs to do so explicitly.
if (TargetFlags)
return addGlobalAddress(Disp.getGlobal(), Disp.getOffset() + off,
TargetFlags);
return addGlobalAddress(Disp.getGlobal(), Disp.getOffset() + off,
Disp.getTargetFlags());
}
}
}
};

7
llvm/lib/Target/X86/X86ISelLowering.cpp
View File

@ -12329,12 +12329,9 @@ X86TargetLowering::EmitAtomicLoadArith6432(MachineInstr *MI,
// Hi
MIB = BuildMI(thisMBB, DL, TII->get(LOADOpc), X86::EDX);
for (unsigned i = 0; i < X86::AddrNumOperands; ++i) {
if (i == X86::AddrDisp) {
if (i == X86::AddrDisp)
MIB.addDisp(MI->getOperand(MemOpndSlot + i), 4); // 4 == sizeof(i32)
// Don't forget to transfer the target flag.
MachineOperand &MO = MIB->getOperand(MIB->getNumOperands()-1);
MO.setTargetFlags(MI->getOperand(MemOpndSlot + i).getTargetFlags());
} else
else
MIB.addOperand(MI->getOperand(MemOpndSlot + i));
}
MIB.setMemRefs(MMOBegin, MMOEnd);