[committed][gdb/testsuite] Add KFAIL for missing support of reverse-debugging of vmovd

[Tom de Vries <tdevries@suse.de>]

Hi,

On my openSUSE Leap 15.1 system I run into:
...
(gdb) PASS: gdb.reverse/step-precsave.exp: turn on process record
break 76^M
Breakpoint 2 at 0x400654: file step-reverse.c, line 76.^M
(gdb) PASS: gdb.reverse/step-precsave.exp: breakpoint at end of main
continue^M
Continuing.^M
Process record does not support instruction 0xc5 at address 0x7ffff783fc70.^M
Process record: failed to record execution log.^M
^M
Program stopped.^M
0x00007ffff783fc70 in __memset_avx2_unaligned_erms () from /lib64/libc.so.6^M
(gdb) FAIL: gdb.reverse/step-precsave.exp: run to end of main
...

The problem is that the vmovd instruction is not supported in
reverse-debugging (PR record/23188).

Add a KFAIL for this PR.

Tested on x86_64-linux.

Committed to trunk.

Thanks,
- Tom

[gdb/testsuite] Add KFAIL for missing support of reverse-debugging of vmovd

gdb/testsuite/ChangeLog:

2019-09-27  Tom de Vries  <tdevries@suse.de>

	PR record/23188
	* gdb.reverse/step-precsave.exp: Add kfail for PR record/23188.

---
 gdb/testsuite/gdb.reverse/step-precsave.exp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/gdb/testsuite/gdb.reverse/step-precsave.exp b/gdb/testsuite/gdb.reverse/step-precsave.exp
index 7443995c00..f5e15510e1 100644
--- a/gdb/testsuite/gdb.reverse/step-precsave.exp
+++ b/gdb/testsuite/gdb.reverse/step-precsave.exp
@@ -46,7 +46,15 @@ gdb_test "break $end_of_main" \
 
 # This can take awhile.
 with_timeout_factor 20 {
-    gdb_test "continue" "Breakpoint .* end of main .*" "run to end of main"
+    set test "run to end of main"
+    gdb_test_multiple "continue" $test {
+	-re "Breakpoint .* end of main .*" {
+	    pass $test
+	}
+	-re "Process record does not support instruction 0xc5 at.*$gdb_prompt $" {
+	    kfail "record/23188" $test
+	}
+    }
 }
 
 # So can this, against gdbserver, for example.