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Code Issues Releases Wiki Activity

replace swap32 and swap64 with faster versions for NV

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This commit is contained in:
jsteube 2015-12-30 00:13:59 +01:00
parent d94cd314f2
commit 68662f0062
1 changed files with 35 additions and 0 deletions
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35
OpenCL/types_ocl.c
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@ -8,6 +8,7 @@ typedef ushort u16;
typedef uint u32; typedef uint u32;
typedef ulong u64; typedef ulong u64;
#ifdef IS_AMD
static inline u32 swap32 (const u32 v) static inline u32 swap32 (const u32 v)
{ {
return (as_uint (as_uchar4 (v).s3210)); return (as_uint (as_uchar4 (v).s3210));
@ -18,6 +19,40 @@ static inline u64 swap64 (const u64 v)
return (as_ulong (as_uchar8 (v).s76543210)); return (as_ulong (as_uchar8 (v).s76543210));
} }
#endif
#ifdef IS_NV
static inline u32 swap32 (const u32 v)
{
u32 r;
asm ("prmt.b32 %0, %1, 0, 0x0123;" : "=r"(r) : "r"(v));
return r;
}
static inline u64 swap64 (const u64 v)
{
u32 il;
u32 ir;
asm ("mov.b64 {%0, %1}, %2;" : "=r"(il), "=r"(ir) : "l"(v));
u32 tl;
u32 tr;
asm ("prmt.b32 %0, %1, 0, 0x0123;" : "=r"(tl) : "r"(il));
asm ("prmt.b32 %0, %1, 0, 0x0123;" : "=r"(tr) : "r"(ir));
u64 r;
asm ("mov.b64 %0, {%1, %2};" : "=l"(r) : "r"(tr), "r"(tl));
return r;
}
#endif
#ifdef IS_AMD #ifdef IS_AMD
static inline u32 __bfe (const u32 a, const u32 b, const u32 c) static inline u32 __bfe (const u32 a, const u32 b, const u32 c)
{ {