diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp | 40 |
1 files changed, 36 insertions, 4 deletions
diff --git a/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp b/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp index 1c02c34e826..ca7a90aa12f 100644 --- a/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp +++ b/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp @@ -699,16 +699,48 @@ bool ARMExpandPseudo::ExpandMBB(MachineBasicBlock &MBB) { MI.eraseFromParent(); break; } + case ARM::t2LDRHpci: + case ARM::t2LDRBpci: + case ARM::t2LDRSHpci: + case ARM::t2LDRSBpci: + case ARM::t2LDRpci: { + unsigned NewLdOpc; + if (Opcode == ARM::t2LDRpci) + NewLdOpc = ARM::t2LDRi12; + else if (Opcode == ARM::t2LDRHpci) + NewLdOpc = ARM::t2LDRHi12; + else if (Opcode == ARM::t2LDRBpci) + NewLdOpc = ARM::t2LDRBi12; + else if (Opcode == ARM::t2LDRSHpci) + NewLdOpc = ARM::t2LDRSHi12; + else if (Opcode == ARM::t2LDRSBpci) + NewLdOpc = ARM::t2LDRSBi12; + else + llvm_unreachable("Not a known opcode?"); + + unsigned DstReg = MI.getOperand(0).getReg(); + MachineInstrBuilder MIB = + AddDefaultPred(BuildMI(MBB, MBBI, MI.getDebugLoc(), + TII->get(NewLdOpc), DstReg) + .addReg(ARM::PC) + .addOperand(MI.getOperand(1))); + (*MIB).setMemRefs(MI.memoperands_begin(), MI.memoperands_end()); + TransferImpOps(MI, MIB, MIB); + MI.eraseFromParent(); + break; + } case ARM::tLDRpci_pic: case ARM::t2LDRpci_pic: { unsigned NewLdOpc = (Opcode == ARM::tLDRpci_pic) - ? ARM::tLDRpci : ARM::t2LDRpci; + ? ARM::tLDRpci : ARM::t2LDRi12; unsigned DstReg = MI.getOperand(0).getReg(); bool DstIsDead = MI.getOperand(0).isDead(); MachineInstrBuilder MIB1 = - AddDefaultPred(BuildMI(MBB, MBBI, MI.getDebugLoc(), - TII->get(NewLdOpc), DstReg) - .addOperand(MI.getOperand(1))); + BuildMI(MBB, MBBI, MI.getDebugLoc(), + TII->get(NewLdOpc), DstReg); + if (Opcode == ARM::t2LDRpci_pic) MIB1.addReg(ARM::PC); + MIB1.addOperand(MI.getOperand(1)); + AddDefaultPred(MIB1); (*MIB1).setMemRefs(MI.memoperands_begin(), MI.memoperands_end()); MachineInstrBuilder MIB2 = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::tPICADD)) |
