};
enum X863DNowEnum {
- NoThreeDNow, ThreeDNow, ThreeDNowA
+ NoThreeDNow, MMX, ThreeDNow, ThreeDNowA
};
enum X86ProcFamilyEnum {
/// SSE1, SSE2, SSE3, SSSE3, SSE41, SSE42, or none supported.
X86SSEEnum X86SSELevel;
- /// 3DNow, 3DNow Athlon, or none supported.
+ /// MMX, 3DNow, 3DNow Athlon, or none supported.
X863DNowEnum X863DNowLevel;
/// True if this processor has conditional move instructions
/// (generally pentium pro+).
bool HasCMov;
- /// True if this processor supports MMX instructions.
- bool HasMMX;
-
/// True if the processor supports X86-64 instructions.
bool HasX86_64;
void setPICStyle(PICStyles::Style Style) { PICStyle = Style; }
bool hasCMov() const { return HasCMov; }
- bool hasMMX() const { return HasMMX; }
bool hasSSE1() const { return X86SSELevel >= SSE1; }
bool hasSSE2() const { return X86SSELevel >= SSE2; }
bool hasSSE3() const { return X86SSELevel >= SSE3; }
bool hasFp256() const { return hasAVX(); }
bool hasInt256() const { return hasAVX2(); }
bool hasSSE4A() const { return HasSSE4A; }
+ bool hasMMX() const { return X863DNowLevel >= MMX; }
bool has3DNow() const { return X863DNowLevel >= ThreeDNow; }
bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
bool hasPOPCNT() const { return HasPOPCNT; }
bool hasXSAVEC() const { return HasXSAVEC; }
bool hasXSAVES() const { return HasXSAVES; }
bool hasPCLMUL() const { return HasPCLMUL; }
- bool hasFMA() const { return HasFMA; }
- // FIXME: Favor FMA when both are enabled. Is this the right thing to do?
- bool hasFMA4() const { return HasFMA4 && !HasFMA; }
+ // Prefer FMA4 to FMA - its better for commutation/memory folding and
+ // has equal or better performance on all supported targets.
+ bool hasFMA() const { return HasFMA && !HasFMA4; }
+ bool hasFMA4() const { return HasFMA4; }
+ bool hasAnyFMA() const { return hasFMA() || hasFMA4() || hasAVX512(); }
bool hasXOP() const { return HasXOP; }
bool hasTBM() const { return HasTBM; }
bool hasMOVBE() const { return HasMOVBE; }