diff options
Diffstat (limited to 'lib/Target/X86/X86.td')
| -rw-r--r-- | lib/Target/X86/X86.td | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/lib/Target/X86/X86.td b/lib/Target/X86/X86.td index 47861d5..da467fe 100644 --- a/lib/Target/X86/X86.td +++ b/lib/Target/X86/X86.td @@ -19,12 +19,17 @@ include "llvm/Target/Target.td" //===----------------------------------------------------------------------===// // X86 Subtarget features. //===----------------------------------------------------------------------===// - + +def FeatureCMOV : SubtargetFeature<"cmov","HasCMov", "true", + "Enable conditional move instructions">; + def FeatureMMX : SubtargetFeature<"mmx","X86SSELevel", "MMX", "Enable MMX instructions">; def FeatureSSE1 : SubtargetFeature<"sse", "X86SSELevel", "SSE1", "Enable SSE instructions", - [FeatureMMX]>; + // SSE codegen depends on cmovs, and all + // SSE1+ processors support them. + [FeatureMMX, FeatureCMOV]>; def FeatureSSE2 : SubtargetFeature<"sse2", "X86SSELevel", "SSE2", "Enable SSE2 instructions", [FeatureSSE1]>; @@ -76,8 +81,8 @@ def : Proc<"i586", []>; def : Proc<"pentium", []>; def : Proc<"pentium-mmx", [FeatureMMX]>; def : Proc<"i686", []>; -def : Proc<"pentiumpro", []>; -def : Proc<"pentium2", [FeatureMMX]>; +def : Proc<"pentiumpro", [FeatureCMOV]>; +def : Proc<"pentium2", [FeatureMMX, FeatureCMOV]>; def : Proc<"pentium3", [FeatureSSE1]>; def : Proc<"pentium-m", [FeatureSSE2, FeatureSlowBTMem]>; def : Proc<"pentium4", [FeatureSSE2]>; @@ -178,21 +183,34 @@ include "X86CallingConv.td" // Assembly Printers //===----------------------------------------------------------------------===// +// Currently the X86 assembly parser only supports ATT syntax. +def ATTAsmParser : AsmParser { + string AsmParserClassName = "ATTAsmParser"; + int Variant = 0; + + // Discard comments in assembly strings. + string CommentDelimiter = "#"; + + // Recognize hard coded registers. + string RegisterPrefix = "%"; +} + // The X86 target supports two different syntaxes for emitting machine code. // This is controlled by the -x86-asm-syntax={att|intel} def ATTAsmWriter : AsmWriter { - string AsmWriterClassName = "ATTAsmPrinter"; + string AsmWriterClassName = "ATTInstPrinter"; int Variant = 0; } def IntelAsmWriter : AsmWriter { - string AsmWriterClassName = "IntelAsmPrinter"; + string AsmWriterClassName = "IntelInstPrinter"; int Variant = 1; } - def X86 : Target { // Information about the instructions... let InstructionSet = X86InstrInfo; + let AssemblyParsers = [ATTAsmParser]; + let AssemblyWriters = [ATTAsmWriter, IntelAsmWriter]; } |
