diff options
Diffstat (limited to 'lib/Target/PowerPC/PPC32ISelSimple.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPC32ISelSimple.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/lib/Target/PowerPC/PPC32ISelSimple.cpp b/lib/Target/PowerPC/PPC32ISelSimple.cpp index 4302beb79b..6d7b585106 100644 --- a/lib/Target/PowerPC/PPC32ISelSimple.cpp +++ b/lib/Target/PowerPC/PPC32ISelSimple.cpp @@ -365,10 +365,19 @@ unsigned ISel::getReg(Value *V, MachineBasicBlock *MBB, copyConstantToRegister(MBB, IPt, C, Reg); return Reg; } else if (GlobalValue *GV = dyn_cast<GlobalValue>(V)) { + // GV is located at PC + distance + unsigned LRsave = makeAnotherReg(Type::IntTy); + unsigned CurPC = makeAnotherReg(Type::IntTy); unsigned Reg1 = makeAnotherReg(V->getType()); unsigned Reg2 = makeAnotherReg(V->getType()); - // Move the address of the global into the register - BuildMI(*MBB, IPt, PPC32::LOADHiAddr, 2, Reg1).addReg(PPC32::R0) + // Save the old LR + BuildMI(*MBB, IPt, PPC32::MFLR, 0, LRsave); + // Move PC to destination reg + BuildMI(*MBB, IPt, PPC32::MovePCtoLR, 0, CurPC); + // Restore the old LR + BuildMI(*MBB, IPt, PPC32::MTLR, 1).addReg(LRsave); + // Move value at PC + distance into return reg + BuildMI(*MBB, IPt, PPC32::LOADHiAddr, 2, Reg1).addReg(CurPC) .addGlobalAddress(GV); BuildMI(*MBB, IPt, PPC32::LOADLoAddr, 2, Reg2).addReg(Reg1) .addGlobalAddress(GV); |