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make the x86 mccode emitter emit the 0x67 and 0x66 prefix bytes in the same

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order as cctools for diffability.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115022 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-09-29 03:43:43 +00:00
parent 8a5072903e
commit 78a194693b
2 changed files with 9 additions and 4 deletions
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8
lib/Target/X86/X86MCCodeEmitter.cpp
View File

@ -720,14 +720,14 @@ void X86MCCodeEmitter::EmitOpcodePrefix(uint64_t TSFlags, unsigned &CurByte,
if ((TSFlags & X86II::Op0Mask) == X86II::REP)
EmitByte(0xF3, CurByte, OS);
// Emit the operand size opcode prefix as needed.
if (TSFlags & X86II::OpSize)
EmitByte(0x66, CurByte, OS);
// Emit the address size opcode prefix as needed.
if ((TSFlags & X86II::AdSize) ||
(MemOperand != -1 && Is64BitMode && Is32BitMemOperand(MI, MemOperand)))
EmitByte(0x67, CurByte, OS);
// Emit the operand size opcode prefix as needed.
if (TSFlags & X86II::OpSize)
EmitByte(0x66, CurByte, OS);
bool Need0FPrefix = false;
switch (TSFlags & X86II::Op0Mask) {

5
test/MC/AsmParser/X86/x86_instructions.s
View File

@ -449,3 +449,8 @@ leaq 8(%rax), %rsi
// CHECK: leaq 8(%rax), %rsi
// CHECK: encoding: [0x48,0x8d,0x70,0x08]
cvttpd2dq 0xdeadbeef(%ebx,%ecx,8),%xmm5
// CHECK: cvttpd2dq 3735928559(%ebx,%ecx,8), %xmm5
// CHECK: encoding: [0x67,0x66,0x0f,0xe6,0xac,0xcb,0xef,0xbe,0xad,0xde]