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Implement the KNC prefetch API so that ISPC prefetch_*() stdlib functions may be used.

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This commit is contained in:
Jean-Luc Duprat
2012-08-30 10:24:31 -07:00
parent caaee0b666
commit 11db466a88
1 changed files with 9 additions and 4 deletions
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13
examples/intrinsics/knc.h
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@@ -2392,16 +2392,21 @@ static FORCEINLINE void __aos_to_soa4_float(float *ptr, __vec16_f *out0, __vec16
/////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////
// prefetch // prefetch
static FORCEINLINE void __prefetch_read_uniform_1(unsigned char *) { static FORCEINLINE void __prefetch_read_uniform_1(const char *p) {
_mm_prefetch(p, _MM_HINT_T0); // prefetch into L1$
} }
static FORCEINLINE void __prefetch_read_uniform_2(unsigned char *) { static FORCEINLINE void __prefetch_read_uniform_2(const char *p) {
_mm_prefetch(p, _MM_HINT_T1); // prefetch into L2$
} }
static FORCEINLINE void __prefetch_read_uniform_3(unsigned char *) { static FORCEINLINE void __prefetch_read_uniform_3(const char *p) {
// There is no L3$ on KNC, don't want to pollute L2$ unecessarily
} }
static FORCEINLINE void __prefetch_read_uniform_nt(unsigned char *) { static FORCEINLINE void __prefetch_read_uniform_nt(const char *p) {
_mm_prefetch(p, _MM_HINT_T2); // prefetch into L2$ with non-temporal hint
// _mm_prefetch(p, _MM_HINT_NTA); // prefetch into L1$ with non-temporal hint
} }
/////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////