+void X86AsmPrinter::PrintDebugValueComment(const MachineInstr *MI,
+ raw_ostream &O) {
+ // FIXME: if this is implemented for another target before it goes
+ // away completely, the common part should be moved into AsmPrinter.
+ O << '\t' << MAI->getCommentString() << "DEBUG_VALUE: ";
+ unsigned NOps = MI->getNumOperands();
+ // cast away const; DIetc do not take const operands for some reason.
+ DIVariable V((MDNode*)(MI->getOperand(NOps-1).getMetadata()));
+ O << V.getName();
+ O << " <- ";
+ if (NOps==3) {
+ // Register or immediate value. Register 0 means undef.
+ assert(MI->getOperand(0).isReg() ||
+ MI->getOperand(0).isImm() ||
+ MI->getOperand(0).isFPImm());
+ if (MI->getOperand(0).isReg() && MI->getOperand(0).getReg() == 0) {
+ // Suppress offset in this case, it is not meaningful.
+ O << "undef";
+ OutStreamer.AddBlankLine();
+ return;
+ }
+
+ if (MI->getOperand(0).isFPImm()) {
+ // This is more naturally done in printOperand, but since the only use
+ // of such an operand is in this comment and that is temporary (and it's
+ // ugly), we prefer to keep this localized.
+ // The include of Type.h may be removable when this code is.
+ if (MI->getOperand(0).getFPImm()->getType()->isFloatTy() ||
+ MI->getOperand(0).getFPImm()->getType()->isDoubleTy())
+ MI->getOperand(0).print(O, &TM);
+ else {
+ // There is no good way to print long double. Convert a copy to
+ // double. Ah well, it's only a comment.
+ bool ignored;
+ APFloat APF = APFloat(MI->getOperand(0).getFPImm()->getValueAPF());
+ APF.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
+ &ignored);
+ O << "(long double) " << APF.convertToDouble();
+ }
+ } else
+ printOperand(MI, 0, O);
+ } else {
+ if (MI->getOperand(0).isReg() && MI->getOperand(0).getReg() == 0) {
+ // Suppress offset in this case, it is not meaningful.
+ O << "undef";
+ OutStreamer.AddBlankLine();
+ return;
+ }
+ // Frame address. Currently handles register +- offset only.
+ assert(MI->getOperand(0).isReg() && MI->getOperand(3).isImm());
+ O << '['; printOperand(MI, 0, O); O << '+'; printOperand(MI, 3, O);
+ O << ']';
+ }
+ O << "+";
+ printOperand(MI, NOps-2, O);
+}
+
+