unsigned char VEX_W = 0;
// XOP: Use XOP prefix byte 0x8f instead of VEX.
- bool XOP = false;
+ bool XOP = (TSFlags >> X86II::VEXShift) & X86II::XOP;
// VEX_5M (VEX m-mmmmm field):
//
bool EncodeRC = false;
- // Encode the operand size opcode prefix as needed.
- if (TSFlags & X86II::OpSize)
- VEX_PP = 0x01;
-
if ((TSFlags >> X86II::VEXShift) & X86II::VEX_W)
VEX_W = 1;
- if ((TSFlags >> X86II::VEXShift) & X86II::XOP)
- XOP = true;
-
if ((TSFlags >> X86II::VEXShift) & X86II::VEX_L)
VEX_L = 1;
if (HasEVEX && ((TSFlags >> X86II::VEXShift) & X86II::EVEX_L2))
++CurOp;
switch (TSFlags & X86II::FormMask) {
+ default: llvm_unreachable("Unexpected form in EmitVEXOpcodePrefix!");
+ case X86II::RawFrm:
+ break;
case X86II::MRMDestMem: {
// MRMDestMem instructions forms:
// MemAddr, src1(ModR/M)
if (HasEVEX && X86II::is32ExtendedReg(MI.getOperand(CurOp).getReg()))
VEX_X = 0x0;
break;
- default: // RawFrm
- break;
}
// Emit segment override opcode prefix as needed.
unsigned char VEX_W = 0;
// XOP: Use XOP prefix byte 0x8f instead of VEX.
- bool XOP = false;
+ bool XOP = (TSFlags >> X86II::VEXShift) & X86II::XOP;
// VEX_5M (VEX m-mmmmm field):
//
//
unsigned char VEX_PP = 0;
- // Encode the operand size opcode prefix as needed.
- if (TSFlags & X86II::OpSize)
- VEX_PP = 0x01;
-
if ((TSFlags >> X86II::VEXShift) & X86II::VEX_W)
VEX_W = 1;
- if ((TSFlags >> X86II::VEXShift) & X86II::XOP)
- XOP = true;
-
if ((TSFlags >> X86II::VEXShift) & X86II::VEX_L)
VEX_L = 1;
}
switch (TSFlags & X86II::FormMask) {
+ default: llvm_unreachable("Unexpected form in emitVEXOpcodePrefix!");
+ case X86II::RawFrm:
+ break;
case X86II::MRMDestMem: {
// MRMDestMem instructions forms:
// MemAddr, src1(ModR/M)
if (X86II::isX86_64ExtendedReg(MI.getOperand(CurOp).getReg()))
VEX_B = 0x0;
break;
- default: // RawFrm
- break;
}
// Emit segment override opcode prefix as needed.