From 1fd8c163a83d96ace1ff78fa6bac7aee084f6f77 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 5 Mar 2021 06:24:52 -0800
Subject: x86-64: Add ifunc-avx2.h functions with 256-bit EVEX

Update ifunc-avx2.h, strchr.c, strcmp.c, strncmp.c and wcsnlen.c to
select the function optimized with 256-bit EVEX instructions using
YMM16-YMM31 registers to avoid RTM abort with usable AVX512VL, AVX512BW
and BMI2 since VZEROUPPER isn't needed at function exit.

For strcmp/strncmp, prefer AVX2 strcmp/strncmp if Prefer_AVX2_STRCMP
is set.
---
 sysdeps/x86_64/multiarch/Makefile | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

(limited to 'sysdeps/x86_64/multiarch/Makefile')

diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index 9477538af4..5ce858823a 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -39,7 +39,17 @@ sysdep_routines += strncat-c stpncpy-c strncpy-c \
 		   memmove-avx512-unaligned-erms \
 		   memset-sse2-unaligned-erms \
 		   memset-avx2-unaligned-erms \
-		   memset-avx512-unaligned-erms
+		   memset-avx512-unaligned-erms \
+		   memchr-evex \
+		   memrchr-evex \
+		   rawmemchr-evex \
+		   strchr-evex \
+		   strchrnul-evex \
+		   strcmp-evex \
+		   strlen-evex \
+		   strncmp-evex \
+		   strnlen-evex \
+		   strrchr-evex
 CFLAGS-varshift.c += -msse4
 CFLAGS-strcspn-c.c += -msse4
 CFLAGS-strpbrk-c.c += -msse4
@@ -56,7 +66,14 @@ sysdep_routines += wmemcmp-sse4 wmemcmp-ssse3 wmemcmp-c \
 		   wcschr-sse2 wcschr-avx2 \
 		   wcsrchr-sse2 wcsrchr-avx2 \
 		   wcsnlen-sse4_1 wcsnlen-c \
-		   wcslen-sse2 wcslen-avx2 wcsnlen-avx2
+		   wcslen-sse2 wcslen-avx2 wcsnlen-avx2 \
+		   wcschr-evex \
+		   wcscmp-evex \
+		   wcslen-evex \
+		   wcsncmp-evex \
+		   wcsnlen-evex \
+		   wcsrchr-evex \
+		   wmemchr-evex
 endif
 
 ifeq ($(subdir),debug)
-- 
cgit v1.2.3-70-g09d2