* [SH] PR 52642 - libstdc++ failures
@ 2012-03-20 20:40 Oleg Endo
2012-03-21 3:15 ` Kaz Kojima
0 siblings, 1 reply; 2+ messages in thread
From: Oleg Endo @ 2012-03-20 20:40 UTC (permalink / raw)
To: gcc-patches
[-- Attachment #1: Type: text/plain, Size: 525 bytes --]
Hi,
Attached is Kaz's patch from the PR.
Tested against rev 185555 with
make -k check RUNTESTFLAGS="--target_board=sh-sim
\{-m2/-ml,-m2/-mb,-m2a-single/-mb,
-m4-single/-ml,-m4-single/-mb,
-m4a-single/-ml,-m4a-single/-mb}"
It fixes a few "sometimes failing" libstdc++ failures.
No new failures otherwise.
OK to apply?
Maybe this one should be backported to 4.7.x, too?
Cheers,
Oleg
ChangeLog:
PR/target 52642
* config/sh/sh.c (sh_expand_prologue): Emit blockage at the end
of prologue for unwinder and profiler.
[-- Attachment #2: pr52642.patch --]
[-- Type: text/x-patch, Size: 727 bytes --]
Index: gcc/config/sh/sh.c
===================================================================
--- gcc/config/sh/sh.c (revision 185554)
+++ gcc/config/sh/sh.c (working copy)
@@ -7239,6 +7239,13 @@
emit_insn (gen_shcompact_incoming_args ());
}
+ /* If we are profiling, make sure no instructions are scheduled before
+ the call to mcount. Similarly if some call instructions are swapped
+ before frame related insns, it'll confuse the unwinder because
+ currently SH has no unwind info for function epilogues. */
+ if (crtl->profile || flag_exceptions || flag_unwind_tables)
+ emit_insn (gen_blockage ());
+
if (flag_stack_usage_info)
current_function_static_stack_size = stack_usage;
}
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [SH] PR 52642 - libstdc++ failures
2012-03-20 20:40 [SH] PR 52642 - libstdc++ failures Oleg Endo
@ 2012-03-21 3:15 ` Kaz Kojima
0 siblings, 0 replies; 2+ messages in thread
From: Kaz Kojima @ 2012-03-21 3:15 UTC (permalink / raw)
To: oleg.endo; +Cc: gcc-patches
Oleg Endo <oleg.endo@t-online.de> wrote:
> It fixes a few "sometimes failing" libstdc++ failures.
> No new failures otherwise.
>
> OK to apply?
OK.
> Maybe this one should be backported to 4.7.x, too?
Sure.
Regards,
kaz
^ permalink raw reply [flat|nested] 2+ messages in thread
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