nline assembly is not supported for MSVC x64 instead use _mm_prefetch
and _mm_cldemote intrinsics.
Signed-off-by: Tyler Retzlaff <roret...@linux.microsoft.com>
Acked-by: Bruce Richardson <bruce.richard...@intel.com>
Acked-by: Morten Brørup <m...@smartsharesystems.com>
---
lib/eal/x86/include/rte_prefetch.h | 25 +++++++++++++++++++++----
1 file changed, 21 insertions(+), 4 deletions(-)
diff --git a/lib/eal/x86/include/rte_prefetch.h
b/lib/eal/x86/include/rte_prefetch.h
index 7fd01c4..239e611 100644
--- a/lib/eal/x86/include/rte_prefetch.h
+++ b/lib/eal/x86/include/rte_prefetch.h
@@ -9,30 +9,38 @@
extern "C" {
#endif
+#include <emmintrin.h>
+
#include <rte_compat.h>
#include <rte_common.h>
#include "generic/rte_prefetch.h"
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wcast-qual"
+
static inline void rte_prefetch0(const volatile void *p)
{
- asm volatile ("prefetcht0 %[p]" : : [p] "m" (*(const volatile char
*)p));
+ _mm_prefetch((const void *)p, _MM_HINT_T0);
}
static inline void rte_prefetch1(const volatile void *p)
{
- asm volatile ("prefetcht1 %[p]" : : [p] "m" (*(const volatile char
*)p));
+ _mm_prefetch((const void *)p, _MM_HINT_T1);
}
static inline void rte_prefetch2(const volatile void *p)
{
- asm volatile ("prefetcht2 %[p]" : : [p] "m" (*(const volatile char
*)p));
+ _mm_prefetch((const void *)p, _MM_HINT_T2);
}
static inline void rte_prefetch_non_temporal(const volatile void *p)
{
- asm volatile ("prefetchnta %[p]" : : [p] "m" (*(const volatile char
*)p));
+ _mm_prefetch((const void *)p, _MM_HINT_NTA);
}
+#pragma GCC diagnostic pop
+
+#ifndef RTE_TOOLCHAIN_MSVC
/*
* We use raw byte codes for now as only the newest compiler
* versions support this instruction natively.
@@ -43,6 +51,15 @@ static inline void rte_prefetch_non_temporal(const volatile
void *p)
{
asm volatile(".byte 0x0f, 0x1c, 0x06" :: "S" (p));
}
+#else
+__rte_experimental
+static inline void
+rte_cldemote(const volatile void *p)
+{
+ _mm_cldemote(p);
+}
+#endif
+
#ifdef __cplusplus
}
--
Acked-by: Konstantin Ananyev <konstantin.v.anan...@yandex.ru>
1.8.3.1
