[PATCH] selftests/powerpc: Don't list r1 in clobbers for TM tests

[Michael Ellerman <mpe@ellerman.id.au>]

Some of our TM (Transactional Memory) tests, list "r1" (the stack
pointer) as a clobbered register.

GCC >= 9 doesn't accept this, and the build breaks:

  ptrace-tm-spd-tar.c: In function 'tm_spd_tar':
  ptrace-tm-spd-tar.c:31:2: error: listing the stack pointer register 'r1' in a clobber list is deprecated [-Werror=deprecated]
     31 |  asm __volatile__(
        |  ^~~
  ptrace-tm-spd-tar.c:31:2: note: the value of the stack pointer after an 'asm' statement must be the same as it was before the statement

We do have some fairly large inline asm blocks in these tests, and
some of them do change the value of r1. However they should all return
to C with the value in r1 restored, so I think it's legitimate to say
r1 is not clobbered. We should probably rewrite some of these in real
assembler one day.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
 tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c | 2 +-
 tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c | 2 +-
 tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c     | 2 +-
 tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c     | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c
index 25e23e73c72e..7b835ef4f8a6 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-tar.c
@@ -73,7 +73,7 @@ void tm_spd_tar(void)
 		[sprn_texasr]"i"(SPRN_TEXASR), [tar_1]"i"(TAR_1),
 		[dscr_1]"i"(DSCR_1), [tar_2]"i"(TAR_2), [dscr_2]"i"(DSCR_2),
 		[tar_3]"i"(TAR_3), [dscr_3]"i"(DSCR_3)
-		: "memory", "r0", "r1", "r3", "r4", "r5", "r6"
+		: "memory", "r0", "r3", "r4", "r5", "r6"
 		);
 
 	/* TM failed, analyse */
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
index f603fe5a445b..f497c2cbbdc3 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-vsx.c
@@ -74,7 +74,7 @@ void tm_spd_vsx(void)
 		"3: ;"
 		: [res] "=r" (result), [texasr] "=r" (texasr)
 		: [sprn_texasr] "i"  (SPRN_TEXASR)
-		: "memory", "r0", "r1", "r3", "r4",
+		: "memory", "r0", "r3", "r4",
 		"r7", "r8", "r9", "r10", "r11"
 		);
 
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c
index e0d37f07bdeb..46ef378a15ec 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-tar.c
@@ -62,7 +62,7 @@ void tm_tar(void)
 		[sprn_ppr]"i"(SPRN_PPR), [sprn_texasr]"i"(SPRN_TEXASR),
 		[tar_1]"i"(TAR_1), [dscr_1]"i"(DSCR_1), [tar_2]"i"(TAR_2),
 		[dscr_2]"i"(DSCR_2), [cptr1] "b" (&cptr[1])
-		: "memory", "r0", "r1", "r3", "r4", "r5", "r6"
+		: "memory", "r0", "r3", "r4", "r5", "r6"
 		);
 
 	/* TM failed, analyse */
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
index 8027457b97b7..a72fcea16876 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace-tm-vsx.c
@@ -62,7 +62,7 @@ void tm_vsx(void)
 		"3: ;"
 		: [res] "=r" (result), [texasr] "=r" (texasr)
 		: [sprn_texasr] "i"  (SPRN_TEXASR), [cptr1] "b" (&cptr[1])
-		: "memory", "r0", "r1", "r3", "r4",
+		: "memory", "r0", "r3", "r4",
 		"r7", "r8", "r9", "r10", "r11"
 		);
 
-- 
2.21.0