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Copy implicit defs (e.g. r0) when changing tBX_RET to tPOP_RET. This bug is

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exposed with an upcoming change will would delete the copy to return register
because there is no use! It's amazing anything works.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147715 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2012-01-07 02:55:54 +00:00
parent 45ca7c6336
commit ccec74738d
1 changed files with 1 additions and 0 deletions
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1
lib/Target/ARM/Thumb1FrameLowering.cpp
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@ -350,6 +350,7 @@ restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
continue;
Reg = ARM::PC;
(*MIB).setDesc(TII.get(ARM::tPOP_RET));
MIB->copyImplicitOps(&*MI);
MI = MBB.erase(MI);
}
MIB.addReg(Reg, getDefRegState(true));