diff options
Diffstat (limited to 'lib/Target/PowerPC/PPCBranchSelector.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPCBranchSelector.cpp | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/lib/Target/PowerPC/PPCBranchSelector.cpp b/lib/Target/PowerPC/PPCBranchSelector.cpp index 5f775e1..21a0fb2 100644 --- a/lib/Target/PowerPC/PPCBranchSelector.cpp +++ b/lib/Target/PowerPC/PPCBranchSelector.cpp @@ -135,21 +135,33 @@ bool PPCBSel::runOnMachineFunction(MachineFunction &Fn) { MBBStartOffset += 4; continue; } - + // Otherwise, we have to expand it to a long branch. - // The BCC operands are: - // 0. PPC branch predicate - // 1. CR register - // 2. Target MBB - PPC::Predicate Pred = (PPC::Predicate)I->getOperand(0).getImm(); - unsigned CRReg = I->getOperand(1).getReg(); - MachineInstr *OldBranch = I; DebugLoc dl = OldBranch->getDebugLoc(); - - // Jump over the uncond branch inst (i.e. $PC+8) on opposite condition. - BuildMI(MBB, I, dl, TII->get(PPC::BCC)) - .addImm(PPC::InvertPredicate(Pred)).addReg(CRReg).addImm(2); + + if (I->getOpcode() == PPC::BCC) { + // The BCC operands are: + // 0. PPC branch predicate + // 1. CR register + // 2. Target MBB + PPC::Predicate Pred = (PPC::Predicate)I->getOperand(0).getImm(); + unsigned CRReg = I->getOperand(1).getReg(); + + // Jump over the uncond branch inst (i.e. $PC+8) on opposite condition. + BuildMI(MBB, I, dl, TII->get(PPC::BCC)) + .addImm(PPC::InvertPredicate(Pred)).addReg(CRReg).addImm(2); + } else if (I->getOpcode() == PPC::BDNZ) { + BuildMI(MBB, I, dl, TII->get(PPC::BDZ)).addImm(2); + } else if (I->getOpcode() == PPC::BDNZ8) { + BuildMI(MBB, I, dl, TII->get(PPC::BDZ8)).addImm(2); + } else if (I->getOpcode() == PPC::BDZ) { + BuildMI(MBB, I, dl, TII->get(PPC::BDNZ)).addImm(2); + } else if (I->getOpcode() == PPC::BDZ8) { + BuildMI(MBB, I, dl, TII->get(PPC::BDNZ8)).addImm(2); + } else { + llvm_unreachable("Unhandled branch type!"); + } // Uncond branch to the real destination. I = BuildMI(MBB, I, dl, TII->get(PPC::B)).addMBB(Dest); |
