From: Sachin Monga <smonga@linux.ibm.com>
Date: Sun, 26 Oct 2025 17:17:12 +0000 (-0500)
Subject: ppc64le: Power 10 rawmemchr clobbers v20 (bug #33091)
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b59799f14f97f697c3a36b4380bd4ce2fbe65f11;p=thirdparty%2Fglibc.git

ppc64le: Power 10 rawmemchr clobbers v20 (bug #33091)

Replace non-volatile(v20) by volatile(v17)
since v20 is not restored

Reviewed-by: Peter Bergner <bergner@tenstorrent.com>
---

diff --git a/sysdeps/powerpc/powerpc64/le/power10/strlen.S b/sysdeps/powerpc/powerpc64/le/power10/strlen.S
index ec644d5bff..29a5a7d960 100644
--- a/sysdeps/powerpc/powerpc64/le/power10/strlen.S
+++ b/sysdeps/powerpc/powerpc64/le/power10/strlen.S
@@ -31,7 +31,7 @@
 #  define FUNCNAME RAWMEMCHR
 # endif
 # define MCOUNT_NARGS 2
-# define VREG_ZERO v20
+# define VREG_ZERO v17
 # define OFF_START_LOOP 256
 # define RAWMEMCHR_SUBTRACT_VECTORS \
 	vsububm   v4,v4,v18;	    \