GNU C Library master sources branch master updated. glibc-2.22-370-g0a5768f

[hjl at sourceware dot org]

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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=0a5768fe9c2e2870269c3a0920f88d9c22d73e33

commit 0a5768fe9c2e2870269c3a0920f88d9c22d73e33
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Tue Oct 13 10:29:45 2015 -0700

    Support x86-64 assmebler without AVX512
    
    When x86-64 assmebler doesn't support AVX512, we should make
    _dl_runtime_resolve_avx512/_dl_runtime_profile_avx512 as aliases of
    _dl_runtime_resolve_avx/_dl_runtime_profile_avx.  Tested on x86-64
    using GCC 5.2 with binutils 20151008 and GCC 4.8 with binutils 20130219.
    There are no differences in ld.so with binutils 20151008.  There are no
    unexpected failures with binutils 20130219 and 20151008.
    
    	[BZ #19124]
    	* sysdeps/x86_64/dl-trampoline.S [!HAVE_AVX512_ASM_SUPPORT]
    	(_dl_runtime_resolve_avx512): Make it a hidden alias of
    	_dl_runtime_resolve_avx.
    	(_dl_runtime_profile_avx512): Make it a hidden alias of
    	_dl_runtime_profile_avx.

diff --git a/ChangeLog b/ChangeLog
index b2e971e..1f000fc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2015-10-13  H.J. Lu  <hongjiu.lu@intel.com>
+
+	[BZ #19124]
+	* sysdeps/x86_64/dl-trampoline.S [!HAVE_AVX512_ASM_SUPPORT]
+	(_dl_runtime_resolve_avx512): Make it a hidden alias of
+	_dl_runtime_resolve_avx.
+	(_dl_runtime_profile_avx512): Make it a hidden alias of
+	_dl_runtime_profile_avx.
+
 2015-10-13  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/powerpc/fpu/s_llround.c: Move to ....
diff --git a/NEWS b/NEWS
index 478ed2d..7f39543 100644
--- a/NEWS
+++ b/NEWS
@@ -19,7 +19,7 @@ Version 2.23
   18870, 18872, 18873, 18875, 18887, 18921, 18951, 18952, 18956, 18961,
   18966, 18967, 18969, 18970, 18977, 18980, 18981, 18985, 19003, 19012,
   19016, 19018, 19032, 19046, 19049, 19050, 19059, 19071, 19076, 19077,
-  19078, 19079, 19085, 19086, 19088, 19094, 19095.
+  19078, 19079, 19085, 19086, 19088, 19094, 19095, 19124
 
 * The obsolete header <regexp.h> has been removed.  Programs that require
   this header must be updated to use <regex.h> instead.
diff --git a/sysdeps/x86_64/dl-trampoline.S b/sysdeps/x86_64/dl-trampoline.S
index 8475d26..bfc27a1 100644
--- a/sysdeps/x86_64/dl-trampoline.S
+++ b/sysdeps/x86_64/dl-trampoline.S
@@ -71,24 +71,32 @@
 #define REGISTER_SAVE_R8	(REGISTER_SAVE_RDI + 8)
 #define REGISTER_SAVE_R9	(REGISTER_SAVE_R8 + 8)
 
-#define VEC_SIZE		64
-#define VMOVA			vmovdqa64
-#if DL_RUNIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT
-# define VMOV			vmovdqa64
+#define RESTORE_AVX
+
+#ifdef HAVE_AVX512_ASM_SUPPORT
+# define VEC_SIZE		64
+# define VMOVA			vmovdqa64
+# if DL_RUNIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT
+#  define VMOV			vmovdqa64
+# else
+#  define VMOV			vmovdqu64
+# endif
+# define VEC(i)			zmm##i
+# define _dl_runtime_resolve	_dl_runtime_resolve_avx512
+# define _dl_runtime_profile	_dl_runtime_profile_avx512
+# include "dl-trampoline.h"
+# undef _dl_runtime_resolve
+# undef _dl_runtime_profile
+# undef VEC
+# undef VMOV
+# undef VMOVA
+# undef VEC_SIZE
 #else
-# define VMOV			vmovdqu64
+strong_alias (_dl_runtime_resolve_avx, _dl_runtime_resolve_avx512)
+	.hidden _dl_runtime_resolve_avx512
+strong_alias (_dl_runtime_profile_avx, _dl_runtime_profile_avx512)
+	.hidden _dl_runtime_profile_avx512
 #endif
-#define VEC(i)			zmm##i
-#define _dl_runtime_resolve	_dl_runtime_resolve_avx512
-#define _dl_runtime_profile	_dl_runtime_profile_avx512
-#define RESTORE_AVX
-#include "dl-trampoline.h"
-#undef _dl_runtime_resolve
-#undef _dl_runtime_profile
-#undef VEC
-#undef VMOV
-#undef VMOVA
-#undef VEC_SIZE
 
 #define VEC_SIZE		32
 #define VMOVA			vmovdqa

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                      |    9 +++++++++
 NEWS                           |    2 +-
 sysdeps/x86_64/dl-trampoline.S |   40 ++++++++++++++++++++++++----------------
 3 files changed, 34 insertions(+), 17 deletions(-)


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