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teach the encoder to handle pseudo instructions like FP_REG_KILL,

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encoding them into nothing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96110 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-02-13 19:16:53 +00:00
parent c09687bb7e
commit 1cea10a663
1 changed files with 4 additions and 3 deletions
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7
lib/Target/X86/X86MCCodeEmitter.cpp
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@ -303,9 +303,9 @@ void X86MCCodeEmitter::EmitMemModRMByte(const MCInst &MI, unsigned Op,
/// size, and 3) use of X86-64 extended registers.
static unsigned DetermineREXPrefix(const MCInst &MI, unsigned TSFlags,
const TargetInstrDesc &Desc) {
// Pseudo instructions shouldn't get here.
assert((TSFlags & X86II::FormMask) != X86II::Pseudo &&
"Can't encode pseudo instrs");
// Pseudo instructions never have a rex byte.
if ((TSFlags & X86II::FormMask) == X86II::Pseudo)
return 0;
unsigned REX = 0;
if (TSFlags & X86II::REX_W)
@ -506,6 +506,7 @@ EncodeInstruction(const MCInst &MI, raw_ostream &OS,
assert(0 && "FIXME: Remove this form when the JIT moves to MCCodeEmitter!");
default: errs() << "FORM: " << (TSFlags & X86II::FormMask) << "\n";
assert(0 && "Unknown FormMask value in X86MCCodeEmitter!");
case X86II::Pseudo: return; // Pseudo instructions encode to nothing.
case X86II::RawFrm:
EmitByte(BaseOpcode, CurByte, OS);
break;