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The value we're comparing against may be too large for the ARM CMP

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instruction. Move the value into a register and then use that for the CMP.
<rdar://problem/10305266>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142431 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2011-10-18 22:11:18 +00:00
parent b9fecf4e07
commit 564392bd3f
1 changed files with 16 additions and 12 deletions
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28
lib/Target/ARM/ARMISelLowering.cpp
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@ -5849,38 +5849,42 @@ EmitSjLjDispatchBlock(MachineInstr *MI, MachineBasicBlock *MBB) const {
.addFrameIndex(FI)
.addImm(4)
.addMemOperand(FIMMOLd));
AddDefaultPred(BuildMI(DispatchBB, dl, TII->get(ARM::CMPri))
.addReg(NewVReg1)
unsigned NewVReg2 = MRI->createVirtualRegister(TRC);
AddDefaultPred(BuildMI(DispatchBB, dl, TII->get(ARM::MOVi16), NewVReg2)
.addImm(LPadList.size()));
AddDefaultPred(BuildMI(DispatchBB, dl, TII->get(ARM::CMPrr))
.addReg(NewVReg1)
.addReg(NewVReg2));
BuildMI(DispatchBB, dl, TII->get(ARM::Bcc))
.addMBB(TrapBB)
.addImm(ARMCC::HI)
.addReg(ARM::CPSR);
unsigned NewVReg2 = MRI->createVirtualRegister(TRC);
unsigned NewVReg3 = MRI->createVirtualRegister(TRC);
AddDefaultCC(
AddDefaultPred(BuildMI(DispContBB, dl, TII->get(ARM::MOVsi), NewVReg2)
AddDefaultPred(BuildMI(DispContBB, dl, TII->get(ARM::MOVsi), NewVReg3)
.addReg(NewVReg1)
.addImm(ARM_AM::getSORegOpc(ARM_AM::lsl, 2))));
unsigned NewVReg3 = MRI->createVirtualRegister(TRC);
AddDefaultPred(BuildMI(DispContBB, dl, TII->get(ARM::LEApcrelJT), NewVReg3)
unsigned NewVReg4 = MRI->createVirtualRegister(TRC);
AddDefaultPred(BuildMI(DispContBB, dl, TII->get(ARM::LEApcrelJT), NewVReg4)
.addJumpTableIndex(MJTI)
.addImm(UId));
MachineMemOperand *JTMMOLd =
MF->getMachineMemOperand(MachinePointerInfo::getJumpTable(),
MachineMemOperand::MOLoad, 4, 4);
unsigned NewVReg4 = MRI->createVirtualRegister(TRC);
unsigned NewVReg5 = MRI->createVirtualRegister(TRC);
AddDefaultPred(
BuildMI(DispContBB, dl, TII->get(ARM::LDRrs), NewVReg4)
.addReg(NewVReg2, RegState::Kill)
.addReg(NewVReg3)
BuildMI(DispContBB, dl, TII->get(ARM::LDRrs), NewVReg5)
.addReg(NewVReg3, RegState::Kill)
.addReg(NewVReg4)
.addImm(0)
.addMemOperand(JTMMOLd));
BuildMI(DispContBB, dl, TII->get(ARM::BR_JTadd))
.addReg(NewVReg4, RegState::Kill)
.addReg(NewVReg3)
.addReg(NewVReg5, RegState::Kill)
.addReg(NewVReg4)
.addJumpTableIndex(MJTI)
.addImm(UId);
}