6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2026-04-25 05:22:04 +00:00
Code Issues Projects Releases Wiki Activity

Remove special cases for [LM]FENCE, MONITOR and MWAIT from

Browse Source 
encoder and decoder by using new MRM_ forms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96048 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-02-12 23:54:57 +00:00
parent ca3eeb33a8
commit eaca5fa8e6
4 changed files with 9 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/Target/X86/X86CodeEmitter.cpp
+2 -21
View File
@@ -762,27 +762,8 @@ void Emitter<CodeEmitter>::emitInstruction(const MachineInstr &MI,
case X86II::MRM4r: case X86II::MRM5r:
case X86II::MRM6r: case X86II::MRM7r: {
MCE.emitByte(BaseOpcode);
// Special handling of lfence, mfence, monitor, and mwait.
if (Desc->getOpcode() == X86::LFENCE ||
Desc->getOpcode() == X86::MFENCE ||
Desc->getOpcode() == X86::MONITOR ||
Desc->getOpcode() == X86::MWAIT) {
emitRegModRMByte((Desc->TSFlags & X86II::FormMask)-X86II::MRM0r);
switch (Desc->getOpcode()) {
default: break;
case X86::MONITOR:
MCE.emitByte(0xC8);
break;
case X86::MWAIT:
MCE.emitByte(0xC9);
break;
}
} else {
emitRegModRMByte(MI.getOperand(CurOp++).getReg(),
(Desc->TSFlags & X86II::FormMask)-X86II::MRM0r);
}
emitRegModRMByte(MI.getOperand(CurOp++).getReg(),
(Desc->TSFlags & X86II::FormMask)-X86II::MRM0r);
if (CurOp == NumOps)
break;