From ee50a1ae27a9d50dc292ef7ae9a902a9bdd1a1b4 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Tue, 14 Feb 2006 21:52:51 +0000 Subject: [PATCH] Don't special case XS, XD prefixes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26183 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86CodeEmitter.cpp | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-) diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp index 5ef53d3a23d..5208f524b7e 100644 --- a/lib/Target/X86/X86CodeEmitter.cpp +++ b/lib/Target/X86/X86CodeEmitter.cpp @@ -362,30 +362,25 @@ void Emitter::emitInstruction(const MachineInstr &MI) { // Emit the operand size opcode prefix as needed. if (Desc.TSFlags & X86II::OpSize) MCE.emitByte(0x66); - // Emit the double precision sse fp opcode prefix as needed. - if ((Desc.TSFlags & X86II::Op0Mask) == X86II::XD) { - MCE.emitByte(0xF2); MCE.emitByte(0x0F); - } - - // Emit the double precision sse fp opcode prefix as needed. - if ((Desc.TSFlags & X86II::Op0Mask) == X86II::XS) { - MCE.emitByte(0xF3); MCE.emitByte(0x0F); - } - switch (Desc.TSFlags & X86II::Op0Mask) { 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! }