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MCInstrAnalysis: Don't crash on instructions with no operands.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140027 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2011-09-19 17:56:00 +00:00
parent 24f48ece52
commit a182be9b6c
1 changed files with 2 additions and 1 deletions
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3
lib/MC/MCInstrAnalysis.cpp
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@ -12,7 +12,8 @@ using namespace llvm;
uint64_t MCInstrAnalysis::evaluateBranch(const MCInst &Inst, uint64_t Addr,
uint64_t Size) const {
if (Info->get(Inst.getOpcode()).OpInfo[0].OperandType != MCOI::OPERAND_PCREL)
if (Inst.getNumOperands() == 0 ||
Info->get(Inst.getOpcode()).OpInfo[0].OperandType != MCOI::OPERAND_PCREL)
return -1ULL;
int64_t Imm = Inst.getOperand(0).getImm();