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Correctly constrain a register class when computing frame offsets, as the Thumb2

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add instruction takes an rGPR. This fixes the last of PR8825.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131619 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Cameron Zwarich 2011-05-19 02:18:27 +00:00
parent 6fcb6e454b
commit 21803721d5
1 changed files with 4 additions and 0 deletions
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4
lib/Target/ARM/ARMBaseRegisterInfo.cpp
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@ -1111,6 +1111,10 @@ materializeFrameBaseRegister(MachineBasicBlock *MBB,
if (Ins != MBB->end())
DL = Ins->getDebugLoc();
const TargetInstrDesc &TID = TII.get(ADDriOpc);
MachineRegisterInfo &MRI = MBB->getParent()->getRegInfo();
MRI.constrainRegClass(BaseReg, TID.OpInfo[0].getRegClass(this));
MachineInstrBuilder MIB =
BuildMI(*MBB, Ins, DL, TII.get(ADDriOpc), BaseReg)
.addFrameIndex(FrameIdx).addImm(Offset);