Implement asmprinting for odd-even regpairs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75974 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp b/lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp
index 8306e26..f98d4ed 100644
--- a/lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp
+++ b/lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp
@@ -181,11 +181,22 @@
const char* Modifier) {
const MachineOperand &MO = MI->getOperand(OpNum);
switch (MO.getType()) {
- case MachineOperand::MO_Register:
+ case MachineOperand::MO_Register: {
assert (TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
"Virtual registers should be already mapped!");
- O << '%' << TM.getRegisterInfo()->get(MO.getReg()).AsmName;
+ unsigned Reg = MO.getReg();
+ if (Modifier && strncmp(Modifier, "subreg", 6) == 0) {
+ if (strncmp(Modifier + 7, "even", 4) == 0)
+ Reg = TRI->getSubReg(Reg, SystemZ::SUBREG_EVEN);
+ else if (strncmp(Modifier + 7, "odd", 3) == 0)
+ Reg = TRI->getSubReg(Reg, SystemZ::SUBREG_ODD);
+ else
+ assert(0 && "Invalid subreg modifier");
+ }
+
+ O << '%' << TRI->getAsmName(Reg);
return;
+ }
case MachineOperand::MO_Immediate:
O << MO.getImm();
return;