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Code Issues 33 Projects Packages Wiki Activity Actions

Core: New highly optimised svo_memcpy, svo_memset, memcpyd functions

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git-svn-id: svn://ultimatepp.org/upp/trunk@14488 f0d560ea-af0d-0410-9eb7-867de7ffcac7
This commit is contained in:
cxl 2020-05-21 17:18:24 +00:00
commit 48d2166c08
7 changed files with 320 additions and 138 deletions
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29
uppsrc/Core/Cpu.cpp
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@ -150,7 +150,7 @@ void EndianSwap(int64 *v, size_t count) ENDIAN_SWAP
void EndianSwap(uint64 *v, size_t count) ENDIAN_SWAP
#ifdef CPU_X86
void huge_memsetd(void *p, dword c, int len)
void huge_memsetd(void *p, dword c, size_t len)
{ // bypasses the cache, good for >4MB
dword *t = (dword *)p;
if(((uintptr_t)t & 3) == 0 && len > 64) {
@ -161,10 +161,7 @@ void huge_memsetd(void *p, dword c, int len)
len--;
}
while(len >= 16) {
Set4S(0);
Set4S(4);
Set4S(8);
Set4S(12);
Set4S(0); Set4S(4); Set4S(8); Set4S(12);
t += 16;
len -= 16;
}
@ -175,4 +172,26 @@ void huge_memsetd(void *p, dword c, int len)
}
#endif
#ifdef CPU_UNALIGNED
never_inline
void svo_memset_l(byte *t, dword val4, size_t len)
{
const byte *e = t + len;
t = (byte *)(((uintptr_t)t | 3) + 1);
len = e - t;
memsetd(t, val4, len >> 2);
}
never_inline
void svo_memcpy_l(byte *t, byte *s, size_t len)
{
const byte *e = t + len;
byte *t2 = (byte *)(((uintptr_t)t | 3) + 1);
s += t2 - t;
t = t2;
len = e - t;
memcpyd((dword *)t, (dword *)s, len >> 2);
}
#endif
}