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Fix the build on GCC 4.x after 812e8f2a1

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The ancient GCC 4.x doesn't understand the "optimize" attribute until 4.4.
Fix the build on platforms with GCC 4.x < 4.4 by limiting the DONT_VECTORIZE
definition to GCC 5 and greater.

Noticed and patch proposed by Warner Losh <imp@FreeBSD.org>.
This commit is contained in:
Conrad Meyer
2019-08-08 17:25:49 -07:00
parent ff304e9e65
commit ff6c81d90c
1 changed files with 1 additions and 1 deletions
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lib/common/compiler.h
+1 -1
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@@ -128,7 +128,7 @@
}
/* vectorization */
#if !defined(__clang__) && defined(__GNUC__)
#if !defined(__clang__) && defined(__GNUC__) && __GNUC__ >= 5
# define DONT_VECTORIZE __attribute__((optimize("no-tree-vectorize")))
#else
# define DONT_VECTORIZE