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mn10300: Force lower-subreg pass to run. 

There are a number of tests that fail -- generally ones involving
generic vectorization -- at -O0 because we run out of registers.
The lower-subreg pass cleans things up sufficiently to allow these
tests to succeed.

From-SVN: r168721
This commit is contained in:
Richard Henderson 2011-01-12 09:47:02 -08:00 committed by Richard Henderson
parent d6a3e26499
commit ec815d657b
2 changed files with 9 additions and 0 deletions
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gcc/ChangeLog
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@ -1,5 +1,8 @@
2011-01-12 Richard Henderson <rth@redhat.com>
* config/mn10300/mn10300.c (mn10300_option_override): Force enable
flag_split_wide_types.
* config/mn10300/mn10300.c (mn10300_asm_trampoline_template): Remove.
(mn10300_trampoline_init): Rewrite without a template, an immediate
load and a direct branch.

6
gcc/config/mn10300/mn10300.c
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@ -127,6 +127,12 @@ mn10300_option_override (void)
not have timing information available for it. */
flag_schedule_insns = 0;
flag_schedule_insns_after_reload = 0;
/* Force enable splitting of wide types, as otherwise it is trivial
to run out of registers. Indeed, this works so well that register
allocation problems are now more common *without* optimization,
when this flag is not enabled by default. */
flag_split_wide_types = 1;
}
if (mn10300_tune_string)