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Don't define the same register twice when loading a ConstantPointerRef to a reg

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14819 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman 2004-07-14 17:57:04 +00:00
parent 8d442c2dc4
commit 32caa8de62
2 changed files with 6 additions and 10 deletions
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6
lib/Target/PowerPC/PPC32ISelSimple.cpp
View File

@ -526,10 +526,8 @@ void ISel::copyConstantToRegister(MachineBasicBlock *MBB,
// Copy zero (null pointer) to the register.
BuildMI(*MBB, IP, PPC32::ADDI, 2, R).addReg(PPC32::R0).addImm(0);
} else if (ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(C)) {
BuildMI(*MBB, IP, PPC32::ADDIS, 2, R).addReg(PPC32::R0)
.addGlobalAddress(CPR->getValue());
BuildMI(*MBB, IP, PPC32::ORI, 2, R).addReg(PPC32::R0)
.addGlobalAddress(CPR->getValue());
unsigned AddrReg = getReg(CPR->getValue(), MBB, IP);
BuildMI(*MBB, IP, PPC32::OR, 2, R).addReg(AddrReg).addReg(AddrReg);
} else {
std::cerr << "Offending constant: " << C << "\n";
assert(0 && "Type not handled yet!");

6
lib/Target/PowerPC/PowerPCISelSimple.cpp
View File

@ -526,10 +526,8 @@ void ISel::copyConstantToRegister(MachineBasicBlock *MBB,
// Copy zero (null pointer) to the register.
BuildMI(*MBB, IP, PPC32::ADDI, 2, R).addReg(PPC32::R0).addImm(0);
} else if (ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(C)) {
BuildMI(*MBB, IP, PPC32::ADDIS, 2, R).addReg(PPC32::R0)
.addGlobalAddress(CPR->getValue());
BuildMI(*MBB, IP, PPC32::ORI, 2, R).addReg(PPC32::R0)
.addGlobalAddress(CPR->getValue());
unsigned AddrReg = getReg(CPR->getValue(), MBB, IP);
BuildMI(*MBB, IP, PPC32::OR, 2, R).addReg(AddrReg).addReg(AddrReg);
} else {
std::cerr << "Offending constant: " << C << "\n";
assert(0 && "Type not handled yet!");