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assembly for more 64-bit CPUs

pull/2/head
weidai 2003-07-19 03:46:02 +00:00
parent de02be700e
commit db4981d479
1 changed files with 25 additions and 13 deletions
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38
integer.cpp
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@ -1703,9 +1703,21 @@ void PentiumOptimized::Multiply8(word* Z, const word* X, const word* Y)
);
}
#elif defined(__GNUC__) && defined(__alpha__)
#elif defined(__GNUC__) && (defined(__alpha__) || defined(__ia64__) || defined(_ARCH_PPC64) || defined(__x86_64__) || defined(__mips64))
class AlphaOptimized : public Portable
#ifdef __alpha__
#define MUL64x64(a, b, c, d) c = a*b; __asm__("umulh %1,%2,%0" : "=r" (d) : "r" (a), "r" (b))
#else defined(__ia64__)
#define MUL64x64(a, b, c, d) c = a*b; __asm__("xmpy.hu %0=%1,%2" : "=f" (d) : "f" (a), "f" (b))
#else defined(_ARCH_PPC64)
#define MUL64x64(a, b, c, d) c = a*b; __asm__("mulhdu %0,%1,%2" : "=r" (d) : "r" (a), "r" (b) : "cc")
#else defined(__x86_64__)
#define MUL64x64(a, b, c, d) __asm__("mulq %3" : "=d" (d), "=a" (c) : "a" (a), "rm" (b) : "cc")
#else defined(__mips64)
#define MUL64x64(a, b, c, d) __asm__("dmultu %2,%3" : "=h" (d), "=l" (c) : "r" (a), "r" (b))
#endif
class OptimizedFor64BitCPU : public Portable
{
public:
static inline void Multiply2(word *C, const word *A, const word *B);
@ -1722,22 +1734,22 @@ public:
}
};
typedef AlphaOptimized LowLevel;
typedef OptimizedFor64BitCPU LowLevel;
inline void AlphaOptimized::Multiply2(word *C, const word *A, const word *B)
inline void OptimizedFor64BitCPU::Multiply2(word *C, const word *A, const word *B)
{
register dword c, a = *(const dword *)A, b = *(const dword *)B;
((dword *)C)[0] = a*b;
__asm__("umulh %1,%2,%0" : "=r" (c) : "r" (a), "r" (b));
((dword *)C)[1] = c;
register dword c, d, a = *(const dword *)A, b = *(const dword *)B;
MUL64x64(a, b, c, d);
((dword *)C)[0] = c;
((dword *)C)[1] = d;
}
inline word AlphaOptimized::Multiply2Add(word *C, const word *A, const word *B)
inline word OptimizedFor64BitCPU::Multiply2Add(word *C, const word *A, const word *B)
{
register dword c, d, e, a = *(const dword *)A, b = *(const dword *)B;
c = ((dword *)C)[0];
d = a*b + c;
__asm__("umulh %1,%2,%0" : "=r" (e) : "r" (a), "r" (b));
MUL64x64(a, b, d, e);
d += c;
((dword *)C)[0] = d;
d = (d < c);
c = ((dword *)C)[1] + d;
@ -1748,7 +1760,7 @@ inline word AlphaOptimized::Multiply2Add(word *C, const word *A, const word *B)
return d;
}
inline void AlphaOptimized::Multiply4(word *R, const word *A, const word *B)
inline void OptimizedFor64BitCPU::Multiply4(word *R, const word *A, const word *B)
{
Multiply2(R, A, B);
Multiply2(R+4, A+2, B+2);
@ -1763,7 +1775,7 @@ static inline void Multiply2BottomAdd(word *C, const word *A, const word *B)
((dword *)C)[0] = a*b + ((dword *)C)[0];
}
inline void AlphaOptimized::Multiply4Bottom(word *R, const word *A, const word *B)
inline void OptimizedFor64BitCPU::Multiply4Bottom(word *R, const word *A, const word *B)
{
Multiply2(R, A, B);
Multiply2BottomAdd(R+2, A+0, B+2);