if (DIExpr && DIExpr->getNumElements() > 0)
continue;
- // Bail if the value is not indirect in memory or in a register. In these
- // cases, operand 0 will not be a register.
- // FIXME: CodeView does not have an obvious representation for a variable
- // that has been optimized to be a constant.
- if (!DVInst->getOperand(0).isReg())
+ // Bail if operand 0 is not a valid register. This means the variable is a
+ // simple constant, or is described by a complex expression.
+ // FIXME: Find a way to represent constant variables, since they are
+ // relatively common.
+ unsigned Reg =
+ DVInst->getOperand(0).isReg() ? DVInst->getOperand(0).getReg() : 0;
+ if (Reg == 0)
continue;
// Handle the two cases we can handle: indirect in memory and in register.
}
int MCRegisterInfo::getCodeViewRegNum(unsigned RegNum) const {
+ if (L2CVRegs.empty())
+ report_fatal_error("target does not implement codeview register mapping");
const DenseMap<unsigned, int>::const_iterator I = L2CVRegs.find(RegNum);
if (I == L2CVRegs.end())
- report_fatal_error("target does not implement codeview register mapping");
+ report_fatal_error("unknown codeview register");
return I->second;
}