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Accepting request 79914 from Base:System

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- Use __attribute__ target in SSE optimized functions
  so the compiler defines __MMX__ __SSE__ etc, this probably
  only matters in 32 bit. what version to use is still 
  determined at runtime by cpuid. (forwarded request 79913 from elvigia)

OBS-URL: https://build.opensuse.org/request/show/79914
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/zlib?expand=0&rev=37
This commit is contained in:
Sascha Peilicke
2011-08-29 07:12:17 +00:00
committed by Git OBS Bridge
parent 3df69be574
commit 3b22b3ff7c
3 changed files with 72 additions and 2 deletions
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60
zlib-adler-target-attr.patch Normal file
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@@ -0,0 +1,60 @@
diff --git a/x86/adler32.c b/x86/adler32.c
index 3f66f54..a941438 100644
--- a/x86/adler32.c
+++ b/x86/adler32.c
@@ -20,6 +20,19 @@
# define VEC_NO_GO
#endif
+#if GCC_VERSION_GE(404)
+#define GCC_ATTR_MMX __attribute__((__target__("mmx")))
+#define GCC_ATTR_SSE __attribute__((__target__("sse")))
+#define GCC_ATTR_SSE2 __attribute__((__target__("sse2")))
+#define GCC_ATTR_SSSE3 __attribute__((__target__("ssse3")))
+#else
+#define GCC_ATTR_MMX
+#define GCC_ATTR_SSE
+#define GCC_ATTR_SSE2
+#define GCC_ATTR_SSSE3
+#endif
+
+
/* inline asm, so only on GCC (or compatible) */
#if defined(__GNUC__) && !defined(VEC_NO_GO)
# define HAVE_ADLER32_VEC
@@ -240,7 +253,7 @@ local noinline const Bytef *adler32_jumped(buf, s1, s2, k)
#endif
/* ========================================================================= */
-local uLong adler32_SSSE3(adler, buf, len)
+local GCC_ATTR_SSSE3 uLong adler32_SSSE3(adler, buf, len)
uLong adler;
const Bytef *buf;
uInt len;
@@ -383,7 +396,7 @@ local uLong adler32_SSSE3(adler, buf, len)
}
/* ========================================================================= */
-local uLong adler32_SSE2(adler, buf, len)
+local GCC_ATTR_SSE2 uLong adler32_SSE2(adler, buf, len)
uLong adler;
const Bytef *buf;
uInt len;
@@ -604,7 +617,7 @@ local noinline uLong adler32_SSE2_no_oooe(adler, buf, len)
/*
* SSE version to help VIA-C3_2, P2 & P3
*/
-local uLong adler32_SSE(adler, buf, len)
+local GCC_ATTR_SSE uLong adler32_SSE(adler, buf, len)
uLong adler;
const Bytef *buf;
uInt len;
@@ -740,7 +753,7 @@ local uLong adler32_SSE(adler, buf, len)
* (maybe except AMD K6, Cyrix, Winchip/VIA).
* I did my best to get at least 1 instruction between result -> use
*/
-local uLong adler32_MMX(adler, buf, len)
+local GCC_ATTR_MMX uLong adler32_MMX(adler, buf, len)
uLong adler;
const Bytef *buf;
uInt len;