}
}
- // Moving ST(0) to/from a register turns into FpGET_ST0_32 etc.
+ // Moving from ST(0) turns into FpGET_ST0_32 etc.
if (SrcRC == &X86::RSTRegClass) {
// Copying from ST(0). FIXME: handle ST(1) also
assert(SrcReg == X86::ST0 && "Can only copy from TOS right now");
BuildMI(MBB, MI, get(Opc), DestReg);
return;
}
+
+ // Moving to ST(0) turns into FpSET_ST0_32 etc.
+ if (DestRC == &X86::RSTRegClass) {
+ // Copying to ST(0). FIXME: handle ST(1) also
+ assert(DestReg == X86::ST0 && "Can only copy to TOS right now");
+ unsigned Opc;
+ if (SrcRC == &X86::RFP32RegClass)
+ Opc = X86::FpSET_ST0_32;
+ else if (SrcRC == &X86::RFP64RegClass)
+ Opc = X86::FpSET_ST0_64;
+ else {
+ assert(SrcRC == &X86::RFP80RegClass);
+ Opc = X86::FpSET_ST0_80;
+ }
+ BuildMI(MBB, MI, get(Opc)).addReg(SrcReg);
+ return;
+ }
cerr << "Not yet supported!";
abort();