Bug fix: XS, XD prefixes were being emitted twice.
XMM registers were not being handled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26182 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp
index e03c7ce..5ef53d3 100644
--- a/lib/Target/X86/X86CodeEmitter.cpp
+++ b/lib/Target/X86/X86CodeEmitter.cpp
@@ -186,6 +186,11 @@
case X86::ST0: case X86::ST1: case X86::ST2: case X86::ST3:
case X86::ST4: case X86::ST5: case X86::ST6: case X86::ST7:
return RegNo-X86::ST0;
+
+ case X86::XMM0: case X86::XMM1: case X86::XMM2: case X86::XMM3:
+ case X86::XMM4: case X86::XMM5: case X86::XMM6: case X86::XMM7:
+ return RegNo-X86::XMM0;
+
default:
assert(MRegisterInfo::isVirtualRegister(RegNo) &&
"Unknown physical register!");
@@ -371,21 +376,16 @@
case X86II::TB:
MCE.emitByte(0x0F); // Two-byte opcode prefix
break;
- case X86II::REP: break; // already handled.
- case X86II::XS: // F3 0F
- MCE.emitByte(0xF3);
- MCE.emitByte(0x0F);
- break;
- case X86II::XD: // F2 0F
- MCE.emitByte(0xF2);
- MCE.emitByte(0x0F);
- break;
case X86II::D8: case X86II::D9: case X86II::DA: case X86II::DB:
case X86II::DC: case X86II::DD: case X86II::DE: case X86II::DF:
MCE.emitByte(0xD8+
(((Desc.TSFlags & X86II::Op0Mask)-X86II::D8)
>> X86II::Op0Shift));
break; // Two-byte opcode prefix
+ case X86II::REP:
+ case X86II::XS:
+ case X86II::XD:
+ break; // already handled.
default: assert(0 && "Invalid prefix!");
case 0: break; // No prefix!
}