update to glibc-2.28-251.2.src.rpm

Signed-off-by: Zhao Hang <wb-zh951434@alibaba-inc.com>

glibc-RHEL-15696-36.patch

@@ -0,0 +1,44 @@
+From a35a59036ebae3efcdf5e8167610e0656fca9770 Mon Sep 17 00:00:00 2001
+From: "H.J. Lu" <hjl.tools@gmail.com>
+Date: Thu, 11 Jun 2020 12:41:18 -0700
+Subject: [PATCH] x86_64: Use %xmmN with vpxor to clear a vector register
+Content-type: text/plain; charset=UTF-8
+
+Since "vpxor %xmmN, %xmmN, %xmmN" clears the whole vector register, use
+%xmmN, instead of %ymmN, with vpxor to clear a vector register.
+---
+ sysdeps/x86_64/multiarch/strcmp-avx2.S  | 4 ++--
+ sysdeps/x86_64/multiarch/strrchr-avx2.S | 2 +-
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/sysdeps/x86_64/multiarch/strcmp-avx2.S b/sysdeps/x86_64/multiarch/strcmp-avx2.S
+index 433ae047..70d8499b 100644
+--- a/sysdeps/x86_64/multiarch/strcmp-avx2.S
++++ b/sysdeps/x86_64/multiarch/strcmp-avx2.S
+@@ -105,8 +105,8 @@ ENTRY (STRCMP)
+ # endif
+ 	movl	%edi, %eax
+ 	xorl	%edx, %edx
+-	/* Make %ymm7 all zeros in this function.  */
+-	vpxor	%ymm7, %ymm7, %ymm7
++	/* Make %xmm7 (%ymm7) all zeros in this function.  */
++	vpxor	%xmm7, %xmm7, %xmm7
+ 	orl	%esi, %eax
+ 	andl	$(PAGE_SIZE - 1), %eax
+ 	cmpl	$(PAGE_SIZE - (VEC_SIZE * 4)), %eax
+diff --git a/sysdeps/x86_64/multiarch/strrchr-avx2.S b/sysdeps/x86_64/multiarch/strrchr-avx2.S
+index 9f22a15e..c949410b 100644
+--- a/sysdeps/x86_64/multiarch/strrchr-avx2.S
++++ b/sysdeps/x86_64/multiarch/strrchr-avx2.S
+@@ -48,7 +48,7 @@ ENTRY (STRRCHR)
+ 	movl	%edi, %ecx
+ 	/* Broadcast CHAR to YMM4.  */
+ 	VPBROADCAST %xmm4, %ymm4
+-	vpxor	%ymm0, %ymm0, %ymm0
++	vpxor	%xmm0, %xmm0, %xmm0
+ 
+ 	/* Check if we may cross page boundary with one vector load.  */
+ 	andl	$(2 * VEC_SIZE - 1), %ecx
+-- 
+GitLab
+