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-rw-r--r--sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S4
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
index 5b758cae5e..f6d7f3e88b 100644
--- a/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
@@ -616,7 +616,11 @@ L(movsb):
jae L(large_memcpy_2x_check)
# if AVOID_SHORT_DISTANCE_REP_MOVSB || ALIGN_MOVSB
/* Only avoid short movsb if CPU has FSRM. */
+# if X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB < 256
+ testb $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
+# else
testl $X86_STRING_CONTROL_AVOID_SHORT_DISTANCE_REP_MOVSB, __x86_string_control(%rip)
+# endif
jz L(skip_short_movsb_check)
# if AVOID_SHORT_DISTANCE_REP_MOVSB
/* Avoid "rep movsb" if RCX, the distance between source and