[X86] Add fxsr feature flag for fxsave/fxrestore instructions.
llvm-svn: 250497
diff --git a/llvm/lib/Target/X86/X86InstrFPStack.td b/llvm/lib/Target/X86/X86InstrFPStack.td
index c2fe39c..51648c6 100644
--- a/llvm/lib/Target/X86/X86InstrFPStack.td
+++ b/llvm/lib/Target/X86/X86InstrFPStack.td
@@ -633,16 +633,18 @@
def FSCALE : I<0xD9, MRM_FD, (outs), (ins), "fscale", [], IIC_FSCALE>;
def FCOMPP : I<0xDE, MRM_D9, (outs), (ins), "fcompp", [], IIC_FCOMPP>;
-def FXSAVE : I<0xAE, MRM0m, (outs), (ins opaque512mem:$dst),
- "fxsave\t$dst", [(int_x86_fxsave addr:$dst)], IIC_FXSAVE>, TB;
-def FXSAVE64 : RI<0xAE, MRM0m, (outs), (ins opaque512mem:$dst),
- "fxsave64\t$dst", [(int_x86_fxsave64 addr:$dst)],
- IIC_FXSAVE>, TB, Requires<[In64BitMode]>;
-def FXRSTOR : I<0xAE, MRM1m, (outs), (ins opaque512mem:$src),
- "fxrstor\t$src", [(int_x86_fxrstor addr:$src)], IIC_FXRSTOR>, TB;
-def FXRSTOR64 : RI<0xAE, MRM1m, (outs), (ins opaque512mem:$src),
- "fxrstor64\t$src", [(int_x86_fxrstor64 addr:$src)],
- IIC_FXRSTOR>, TB, Requires<[In64BitMode]>;
+let Predicates = [HasFXSR] in {
+ def FXSAVE : I<0xAE, MRM0m, (outs), (ins opaque512mem:$dst),
+ "fxsave\t$dst", [(int_x86_fxsave addr:$dst)], IIC_FXSAVE>, TB;
+ def FXSAVE64 : RI<0xAE, MRM0m, (outs), (ins opaque512mem:$dst),
+ "fxsave64\t$dst", [(int_x86_fxsave64 addr:$dst)],
+ IIC_FXSAVE>, TB, Requires<[In64BitMode]>;
+ def FXRSTOR : I<0xAE, MRM1m, (outs), (ins opaque512mem:$src),
+ "fxrstor\t$src", [(int_x86_fxrstor addr:$src)], IIC_FXRSTOR>, TB;
+ def FXRSTOR64 : RI<0xAE, MRM1m, (outs), (ins opaque512mem:$src),
+ "fxrstor64\t$src", [(int_x86_fxrstor64 addr:$src)],
+ IIC_FXRSTOR>, TB, Requires<[In64BitMode]>;
+} // Predicates = [FeatureFXSR]
} // SchedRW
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