|
 |
0b26f7 |
commit f2413f2710d5d5cc884b413b83fcf8198e3717fa
|
|
|
0b26f7 |
Author: H.J. Lu <hjl.tools@gmail.com>
|
|
|
0b26f7 |
Date: Sat Aug 28 06:10:38 2021 -0700
|
|
|
0b26f7 |
|
|
|
0b26f7 |
x86-64: Use testl to check __x86_string_control
|
|
|
0b26f7 |
|
|
|
0b26f7 |
Use testl, instead of andl, to check __x86_string_control to avoid
|
|
|
0b26f7 |
updating __x86_string_control.
|
|
|
0b26f7 |
|
|
|
0b26f7 |
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
|
|
|
0b26f7 |
(cherry picked from commit 3c8b9879cab6d41787bc5b14c1748f62fd6d0e5f)
|
|
|
0b26f7 |
|
|
|
0b26f7 |
diff --git a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
|
|
|
0b26f7 |
index 9f02624375c07b26..abde8438d41f2320 100644
|
|
|
0b26f7 |
--- a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
|
|
|
0b26f7 |
+++ b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
|
|
|
0b26f7 |
@@ -325,7 +325,7 @@ L(movsb):
|
|
|
0b26f7 |
/* Avoid slow backward REP MOVSB. */
|
|
|
0b26f7 |
jb L(more_8x_vec_backward)
|
|
|
0b26f7 |
# if AVOID_SHORT_DISTANCE_REP_MOVSB
|
|
|
0b26f7 |
- andl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
|
|
|
0b26f7 |
+ testl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
|
|
|
0b26f7 |
jz 3f
|
|
|
0b26f7 |
movq %rdi, %rcx
|
|
|
0b26f7 |
subq %rsi, %rcx
|
|
|
0b26f7 |
@@ -333,7 +333,7 @@ L(movsb):
|
|
|
0b26f7 |
# endif
|
|
|
0b26f7 |
1:
|
|
|
0b26f7 |
# if AVOID_SHORT_DISTANCE_REP_MOVSB
|
|
|
0b26f7 |
- andl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
|
|
|
0b26f7 |
+ testl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
|
|
|
0b26f7 |
jz 3f
|
|
|
0b26f7 |
movq %rsi, %rcx
|
|
|
0b26f7 |
subq %rdi, %rcx
|