Use require supports_reverse

This changes some tests to use "require supports_reverse".

gdb/testsuite/gdb.mi/mi-reverse.exp

@@ -27,9 +27,7 @@
 # but to verify the correct output response to MI operations.
 #
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 load_lib mi-support.exp
 set MIFLAGS "-i=mi"

gdb/testsuite/gdb.reverse/amd64-tailcall-reverse.exp

@@ -13,9 +13,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 set opts {}
 standard_testfile .S

gdb/testsuite/gdb.reverse/break-reverse.exp

@@ -16,9 +16,7 @@
 # This file is part of the GDB testsuite.  It tests reverse debugging
 # with breakpoints.
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/consecutive-reverse.exp

@@ -16,9 +16,7 @@
 # This file is part of the GDB testsuite.  It tests stepping over
 # consecutive instructions in reverse.
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/finish-precsave.exp

@@ -16,9 +16,7 @@
 # This file is part of the GDB testsuite.  It tests 'finish' with
 # reverse debugging.
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile finish-reverse.c
 set precsave [standard_output_file finish.precsave]

gdb/testsuite/gdb.reverse/finish-reverse-bkpt.exp

@@ -40,9 +40,7 @@
 # addition to non-PowerPC systems.  On non-PowerPC systems, the GEP and LEP
 # are the same.
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/finish-reverse.exp

@@ -16,9 +16,7 @@
 # This file is part of the GDB testsuite.  It tests 'finish' with
 # reverse debugging.
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/fstatat-reverse.exp

@@ -19,9 +19,7 @@
 # This test tests fstatat syscall for reverse execution.
 #
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/getrandom.exp

@@ -19,9 +19,7 @@
 # This test tests getrandom syscall for reverse execution.
 #
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/getresuid-reverse.exp

@@ -19,9 +19,7 @@
 # This test tests getresuid/getresgid syscalls for reverse execution.
 #
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/i386-reverse.exp

@@ -19,10 +19,7 @@
 # This test tests some i386 general instructions for reverse execution.
 #
 
-if ![supports_reverse] {
-    return
-}
-
+require supports_reverse
 
 if {![is_x86_like_target]} {
     verbose "Skipping i386 reverse tests."

gdb/testsuite/gdb.reverse/i386-sse-reverse.exp

@@ -19,10 +19,7 @@
 # This test tests some i386 general instructions for reverse execution.
 #
 
-if ![supports_reverse] {
-    return
-}
-
+require supports_reverse
 
 if {![istarget "*86*-*linux*"]} {
     verbose "Skipping i386 reverse tests."

gdb/testsuite/gdb.reverse/insn-reverse.exp

@@ -13,12 +13,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-if ![supports_reverse] {
-    return
-}
-
-# Check if start command is supported.
-require !use_gdb_stub
+require supports_reverse !use_gdb_stub
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/machinestate.exp

@@ -35,9 +35,7 @@
 #   Test forward replay
 #
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile .c ms1.c
 

gdb/testsuite/gdb.reverse/next-reverse-bkpt-over-sr.exp

@@ -40,9 +40,7 @@
 # addition to non-PowerPC systems.  On non-PowerPC systems, the GEP and LEP
 # are the same.
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/pipe-reverse.exp

@@ -19,9 +19,7 @@
 # This test tests pipe syscall for reverse execution.
 #
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/readv-reverse.exp

@@ -19,9 +19,7 @@
 # This test tests readv syscall for reverse execution.
 #
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/recvmsg-reverse.exp

@@ -19,9 +19,7 @@
 # This test tests socketpair and recvmsg syscalls for reverse execution.
 #
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/rerun-prec.exp

@@ -13,9 +13,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-if {![supports_reverse] || ![supports_process_record]} {
-    return
-}
+require supports_reverse supports_process_record
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/s390-mvcle.exp

@@ -17,9 +17,7 @@
 # This test tests s390 MVCLE opcode for reverse execution.
 #
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 if { ! [istarget "s390*-*-*"] } {
     verbose "Skipping s390 MVCLE instruction recording tests."

gdb/testsuite/gdb.reverse/sigall-precsave.exp

@@ -18,10 +18,7 @@ if [target_info exists gdb,nosignals] {
     return
 }
 
-if ![supports_reverse] {
-    return
-}
-
+require supports_reverse
 
 gdb_exit
 gdb_start

gdb/testsuite/gdb.reverse/sigall-reverse.exp

@@ -18,10 +18,7 @@ if [target_info exists gdb,nosignals] {
     return
 }
 
-if ![supports_reverse] {
-    return
-}
-
+require supports_reverse
 
 gdb_exit
 gdb_start

gdb/testsuite/gdb.reverse/singlejmp-reverse.exp

@@ -13,9 +13,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile ".S" "${gdb_test_file_name}-nodebug.S"
 set executable ${testfile}

gdb/testsuite/gdb.reverse/solib-reverse.exp

@@ -16,12 +16,7 @@
 # This file is part of the GDB testsuite.  It tests reverse debugging
 # with shared libraries.
 
-if ![supports_reverse] {
-    return
-}
-if {[skip_shlib_tests]} {
-    return
-}
+require supports_reverse !skip_shlib_tests
 
 standard_testfile
 set lib1file "shr1"

gdb/testsuite/gdb.reverse/step-indirect-call-thunk.exp

@@ -13,10 +13,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-if { ![supports_reverse] } {
-    untested "target does not support record"
-    return -1
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/step-reverse.exp

@@ -20,9 +20,7 @@
 # Test step and next in reverse
 #
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/time-reverse.exp

@@ -19,9 +19,7 @@
 # This test tests time syscall for reverse execution.
 #
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/until-reverse.exp

@@ -16,9 +16,7 @@
 # This file is part of the GDB testsuite.  It tests 'until' and 
 # 'advance' in reverse debugging.
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile .c ur1.c
 

gdb/testsuite/gdb.reverse/waitpid-reverse.exp

@@ -21,9 +21,7 @@
 # Also serves as regression test for gdb/19187 (recording across a
 # fork).
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile
 

gdb/testsuite/gdb.reverse/watch-reverse.exp

@@ -18,9 +18,7 @@
 # with watchpoints.
 
 
-if ![supports_reverse] {
-    return
-}
+require supports_reverse
 
 standard_testfile