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The tLDR instruction wasn't encoded properly:

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<MCInst 2251 <MCOperand Reg:70> <MCOperand Reg:66> <MCOperand Imm:0> <MCOperand Reg:0> <MCOperand Imm:14> <MCOperand Reg:0>>

Notice that the "reg" here is 0, which is an invalid register. Put a check in
the code for this to prevent crashing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120766 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2010-12-03 00:53:22 +00:00
parent b0d98692a6
commit 0bdf0c05b9
1 changed files with 6 additions and 2 deletions
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8
lib/Target/ARM/ARMMCCodeEmitter.cpp
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@ -642,8 +642,12 @@ static unsigned getAddrModeSOpValue(const MCInst &MI, unsigned OpIdx,
const MCOperand &MO2 = MI.getOperand(OpIdx + 2);
unsigned Rn = getARMRegisterNumbering(MO.getReg());
unsigned Imm5 = (MO1.getImm() / Scale) & 0x1f;
unsigned Rm = getARMRegisterNumbering(MO2.getReg());
return (Rm << 3) | (Imm5 << 3) | Rn;
if (MO2.getReg() != 0)
// Is an immediate.
Imm5 = getARMRegisterNumbering(MO2.getReg());
return (Imm5 << 3) | Rn;
}
/// getAddrModeS4OpValue - Return encoding for t_addrmode_s4 operands.