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[x86] Switch PAUSE instruction to use XS prefix instead of HasREPPrefix. Remove HasREPPrefix support from disassembler table generator since its now only used by CodeGenOnly instructions.

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llvm-svn: 201767
This commit is contained in:
Craig Topper 2014-02-20 07:59:43 +00:00
parent 27104d29fd
commit 80c9d78b97
4 changed files with 3 additions and 5 deletions
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1
lib/Target/X86/X86InstrFormats.td
View File

@ -158,6 +158,7 @@ class TA { Map OpMap = TA; }
class XOP8 { Map OpMap = XOP8; Prefix OpPrefix = PS; }
class XOP9 { Map OpMap = XOP9; Prefix OpPrefix = PS; }
class XOPA { Map OpMap = XOPA; Prefix OpPrefix = PS; }
class OBXS { Prefix OpPrefix = XS; }
class PS : TB { Prefix OpPrefix = PS; }
class PD : TB { Prefix OpPrefix = PD; }
class XD : TB { Prefix OpPrefix = XD; }

2
lib/Target/X86/X86InstrSSE.td
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@ -3728,7 +3728,7 @@ def CLFLUSH : I<0xAE, MRM7m, (outs), (ins i8mem:$src),
// was introduced with SSE2, it's backward compatible.
def PAUSE : I<0x90, RawFrm, (outs), (ins),
"pause", [(int_x86_sse2_pause)], IIC_SSE_PAUSE>,
REP, Requires<[HasSSE2]>;
OBXS, Requires<[HasSSE2]>;
// Load, store, and memory fence
def SFENCE : I<0xAE, MRM_F8, (outs), (ins),

3
utils/TableGen/X86RecognizableInstr.cpp
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@ -203,7 +203,6 @@ RecognizableInstr::RecognizableInstr(DisassemblerTables &tables,
HasEVEX_K = Rec->getValueAsBit("hasEVEX_K");
HasEVEX_KZ = Rec->getValueAsBit("hasEVEX_Z");
HasEVEX_B = Rec->getValueAsBit("hasEVEX_B");
HasREPPrefix = Rec->getValueAsBit("hasREPPrefix");
IsCodeGenOnly = Rec->getValueAsBit("isCodeGenOnly");
ForceDisassemble = Rec->getValueAsBit("ForceDisassemble");
@ -433,7 +432,7 @@ InstructionContext RecognizableInstr::insnContext() const {
insnContext = IC_ADSIZE;
else if (OpPrefix == X86Local::XD)
insnContext = IC_XD;
else if (OpPrefix == X86Local::XS || HasREPPrefix)
else if (OpPrefix == X86Local::XS)
insnContext = IC_XS;
else
insnContext = IC;

2
utils/TableGen/X86RecognizableInstr.h
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@ -74,8 +74,6 @@ private:
bool HasEVEX_KZ;
/// The hasEVEX_B field from the record
bool HasEVEX_B;
/// The hasREPPrefix field from the record
bool HasREPPrefix;
/// The isCodeGenOnly field from the record
bool IsCodeGenOnly;
/// The ForceDisassemble field from the record