[PATCH] testsuite: Fix FAIL for older ARM cores

[Jonathan Wakely via Gcc-patches]

Since hard-float is not implemented for cores that only support thumb1
(and not thumb2) this test fails for configurations using hard float but
older -mcpu settings.

gcc/testsuite/ChangeLog:

        * g++.dg/inherit/thunk10.C: Skip test for arm_hf_eabi if -mthumb
        doesn't generate thumb2 instructions.

Tested x86_64-linux, and armv7l-linux-gnueabihf with
RUNTESTFLAGS='--target_board=unix\{,-mcpu=cortex-a9\}

No change for x86_64, for ARM this test goes from:

PASS:           8
UNRESOLVED:     4
FAIL:           4

to

UNSUPPORTED:    4
PASS:           8

OK for trunk?


commit ce743e1768c75445a9bf8e49d1116b4a7ce99cfc
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Fri Oct 2 11:30:51 2020

    testsuite: Fix FAIL for older ARM cores
    
    Since hard-float is not implemented for cores that only support thumb1
    (and not thumb2) this test fails for configurations using hard float but
    older -mcpu settings.
    
    gcc/testsuite/ChangeLog:
    
            * g++.dg/inherit/thunk10.C: Skip test for arm_hf_eabi if -mthumb
            doesn't generate thumb2 instructions.

diff --git a/gcc/testsuite/g++.dg/inherit/thunk10.C 
b/gcc/testsuite/g++.dg/inherit/thunk10.C
index 702067749fa..0188436b6cd 100644
--- a/gcc/testsuite/g++.dg/inherit/thunk10.C
+++ b/gcc/testsuite/g++.dg/inherit/thunk10.C
@@ -1,4 +1,5 @@
 /* { dg-options "-mthumb" { target arm*-*-* } } */
+/* { dg-skip-if "hf needs thumb2" { arm_hf_eabi && { ! arm_thumb2_ok } } } */
 /* { dg-do run } */
 /* { dg-timeout 100 } */