From: Tyler Retzlaff <roretzla@linux.microsoft.com>
To: dev@dpdk.org
Cc: Bruce Richardson <bruce.richardson@intel.com>,
Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>,
Tyler Retzlaff <roretzla@linux.microsoft.com>
Subject: [PATCH 1/2] eal: provide prefetch functions for MSVC
Date: Wed, 20 Mar 2024 14:18:28 -0700 [thread overview]
Message-ID: <1710969509-20627-2-git-send-email-roretzla@linux.microsoft.com> (raw)
In-Reply-To: <1710969509-20627-1-git-send-email-roretzla@linux.microsoft.com>
MSVC does not have an equivalent of __builtin_prefetch that allows read
or read-write parameter. Introduce conditional compile expansion of
rte_prefetch[0-2] inline functions when building with MSVC.
Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
lib/eal/include/generic/rte_prefetch.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/lib/eal/include/generic/rte_prefetch.h b/lib/eal/include/generic/rte_prefetch.h
index f9fab5e..773b3b8 100644
--- a/lib/eal/include/generic/rte_prefetch.h
+++ b/lib/eal/include/generic/rte_prefetch.h
@@ -71,7 +71,11 @@
* GCC docs where these integer constants are described in more detail:
* https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html
*/
+#ifdef RTE_TOOLCHAIN_MSVC
+ rte_prefetch0(p);
+#else
__builtin_prefetch(p, 1, 3);
+#endif
}
/**
@@ -92,7 +96,11 @@
* GCC docs where these integer constants are described in more detail:
* https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html
*/
+#ifdef RTE_TOOLCHAIN_MSVC
+ rte_prefetch1(p);
+#else
__builtin_prefetch(p, 1, 2);
+#endif
}
/**
@@ -113,7 +121,11 @@
* GCC docs where these integer constants are described in more detail:
* https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html
*/
+#ifdef RTE_TOOLCHAIN_MSVC
+ rte_prefetch2(p);
+#else
__builtin_prefetch(p, 1, 1);
+#endif
}
/**
--
1.8.3.1
next prev parent reply other threads:[~2024-03-20 21:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-20 21:18 [PATCH 0/2] adapt " Tyler Retzlaff
2024-03-20 21:18 ` Tyler Retzlaff [this message]
2024-03-20 21:18 ` [PATCH 2/2] eal: adjust intrinsic type casts for CXX Tyler Retzlaff
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