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Add d/patches/0001-temporarily-disable-sse3-and-above.patch 

Disable SSE3+ on amd64 (Closes: #894670).

Signed-off-by: Shengjing Zhu <i@zhsj.me>
master
Shengjing Zhu 2018-04-03 20:58:01 +08:00
parent c7f00c1b31
commit ee94ff8a74
2 changed files with 62 additions and 0 deletions
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From: Shengjing Zhu <i@zhsj.me>
Date: Tue, 3 Apr 2018 20:48:41 +0800
Subject: temporarily disable sse3 and above
SIMD support on i386 doesn't compile, see upstream bug#6.
the way SIMD runtime detection can't guarantee gcc not to
emit SIMD for generic functions, see upstream bug#16 and
Debian bug#894670
So SIMD only will be used on amd64, and all amd64 has SSE2
Bug: http://lab.jerasure.org/jerasure/gf-complete/issues/6
Bug: http://lab.jerasure.org/jerasure/gf-complete/issues/16
Bug-Debian: https://bugs.debian.org/894670
Signed-off-by: Shengjing Zhu <i@zhsj.me>
---
m4/ax_ext.m4 | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/m4/ax_ext.m4 b/m4/ax_ext.m4
index 95c4dbe..19e5351 100644
--- a/m4/ax_ext.m4
+++ b/m4/ax_ext.m4
@@ -46,27 +46,32 @@ AC_DEFUN([AX_EXT],
AC_CACHE_CHECK([whether sse3 is enabled], [ax_cv_have_sse3_ext], [ax_cv_have_sse3_ext=yes])
if test "$ax_cv_have_sse3_ext" = yes; then
- AX_CHECK_COMPILE_FLAG(-msse3, [SIMD_FLAGS="$SIMD_FLAGS -msse3 -DINTEL_SSE3"], [ax_cv_have_sse3_ext=no])
+ # AX_CHECK_COMPILE_FLAG(-msse3, [SIMD_FLAGS="$SIMD_FLAGS -msse3 -DINTEL_SSE3"], [ax_cv_have_sse3_ext=no])
+ :
fi
AC_CACHE_CHECK([whether ssse3 is enabled], [ax_cv_have_ssse3_ext], [ax_cv_have_ssse3_ext=yes])
if test "$ax_cv_have_ssse3_ext" = yes; then
- AX_CHECK_COMPILE_FLAG(-mssse3, [SIMD_FLAGS="$SIMD_FLAGS -mssse3 -DINTEL_SSSE3"], [ax_cv_have_ssse3_ext=no])
+ # AX_CHECK_COMPILE_FLAG(-mssse3, [SIMD_FLAGS="$SIMD_FLAGS -mssse3 -DINTEL_SSSE3"], [ax_cv_have_ssse3_ext=no])
+ :
fi
AC_CACHE_CHECK([whether pclmuldq is enabled], [ax_cv_have_pclmuldq_ext], [ax_cv_have_pclmuldq_ext=yes])
if test "$ax_cv_have_pclmuldq_ext" = yes; then
- AX_CHECK_COMPILE_FLAG(-mpclmul, [SIMD_FLAGS="$SIMD_FLAGS -mpclmul -DINTEL_SSE4_PCLMUL"], [ax_cv_have_pclmuldq_ext=no])
+ # AX_CHECK_COMPILE_FLAG(-mpclmul, [SIMD_FLAGS="$SIMD_FLAGS -mpclmul -DINTEL_SSE4_PCLMUL"], [ax_cv_have_pclmuldq_ext=no])
+ :
fi
AC_CACHE_CHECK([whether sse4.1 is enabled], [ax_cv_have_sse41_ext], [ax_cv_have_sse41_ext=yes])
if test "$ax_cv_have_sse41_ext" = yes; then
- AX_CHECK_COMPILE_FLAG(-msse4.1, [SIMD_FLAGS="$SIMD_FLAGS -msse4.1 -DINTEL_SSE4"], [ax_cv_have_sse41_ext=no])
+ # AX_CHECK_COMPILE_FLAG(-msse4.1, [SIMD_FLAGS="$SIMD_FLAGS -msse4.1 -DINTEL_SSE4"], [ax_cv_have_sse41_ext=no])
+ :
fi
AC_CACHE_CHECK([whether sse4.2 is enabled], [ax_cv_have_sse42_ext], [ax_cv_have_sse42_ext=yes])
if test "$ax_cv_have_sse42_ext" = yes; then
- AX_CHECK_COMPILE_FLAG(-msse4.2, [SIMD_FLAGS="$SIMD_FLAGS -msse4.2 -DINTEL_SSE4"], [ax_cv_have_sse42_ext=no])
+ # AX_CHECK_COMPILE_FLAG(-msse4.2, [SIMD_FLAGS="$SIMD_FLAGS -msse4.2 -DINTEL_SSE4"], [ax_cv_have_sse42_ext=no])
+ :
fi
;;
esac

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0001-temporarily-disable-sse3-and-above.patch