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[MC][Mips] Fix wrong assumption about Immediate operand. #119056

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[MC][Mips] Fix wrong assumption about Immediate operand. #119056

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5 changes: 4 additions & 1 deletion llvm/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -143,10 +143,13 @@ class MipsMCInstrAnalysis : public MCInstrAnalysis {
switch (Info->get(Inst.getOpcode()).operands()[NumOps - 1].OperandType) {
case MCOI::OPERAND_UNKNOWN:
case MCOI::OPERAND_IMMEDIATE: {
const MCOperand& Op = Inst.getOperand(NumOps - 1);
if (!Op.isImm())
return false;
// j, jal, jalx, jals
// Absolute branch within the current 256 MB-aligned region
uint64_t Region = Addr & ~uint64_t(0xfffffff);
Target = Region + Inst.getOperand(NumOps - 1).getImm();
Target = Region + Op.getImm();
return true;
}
case MCOI::OPERAND_PCREL:
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