[PATCH] Don't run guality.exp tests with LTO_TORTURE_OPTIONS.

[Mark Wielaard]

Hi,

While writing new guality.exp tests I noticed they often just fail
when ran with -flto, even though they PASS in all other cases. When
I asked on irc about this I was told that LTO was known to not play
well with DWARF debuginfo anyway. If that is the case, it seems better
to disable -flto for guality.exp for now since it just adds noise
(and unfortunately guality.exp already has lots of FAILs). The attached
patch does this. It changes the make check-c RUNTESTFLAGS=guality.exp
results (against gdb git master) from:

# of expected passes            3121
# of unexpected failures        180
# of unexpected successes       33
# of expected failures          15
# of unsupported tests          78

to:

# of expected passes            2389
# of unexpected failures        110
# of unexpected successes       26
# of expected failures          10
# of unsupported tests          54

That looks like an improvement to me, even though the number of FAILs
is still a bit high. Does this look a good thing to apply? Or are people
actively working on reducing the number of LTO guality.exp failures and
can we expect them to turn into PASSes soon anyway?

Thanks,

Mark

gcc/testsuite/ChangeLog

        * gcc.dg/guality/guality.exp: Remove LTO_TORTURE_OPTIONS from
        set-torture-options. Only use DG_TORTURE_OPTIONS.
---
 gcc/testsuite/ChangeLog                  |    5 +++++
 gcc/testsuite/gcc.dg/guality/guality.exp |    6 ++++++
 2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index b364f40..421e006 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2014-07-02  Mark Wielaard  <m...@redhat.com>
+
+       * gcc.dg/guality/guality.exp: Remove LTO_TORTURE_OPTIONS from
+       set-torture-options. Only use DG_TORTURE_OPTIONS.
+
 2014-07-02  Uros Bizjak  <ubiz...@gmail.com>
 
        * gfortran.dg/ieee/ieee_1.F90 (dg-additional-options): Remove -O0.
diff --git a/gcc/testsuite/gcc.dg/guality/guality.exp 
b/gcc/testsuite/gcc.dg/guality/guality.exp
index 5e714dd..7991661 100644
--- a/gcc/testsuite/gcc.dg/guality/guality.exp
+++ b/gcc/testsuite/gcc.dg/guality/guality.exp
@@ -47,6 +47,12 @@ if {[check_guality "
     return 0;
   }
 "]} {
+  # Override default torture-options which include LTO_TORTURE_OPTIONS
+  # Currently LTO and the guality tests that depend on debuginfo don't mix.
+  global DG_TORTURE_OPTIONS
+  torture-init
+  set-torture-options $DG_TORTURE_OPTIONS
+
   gcc-dg-runtest [lsort [glob $srcdir/$subdir/*.c]] ""
   gcc-dg-runtest [lsort [glob $srcdir/c-c++-common/guality/*.c]] "-Wc++-compat"
 }
-- 
1.7.1