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| author | Georg-Johann Lay <avr@gjlay.de> | 2016-08-04 07:52:38 +0000 |
|---|---|---|
| committer | Georg-Johann Lay <gjl@gcc.gnu.org> | 2016-08-04 07:52:38 +0000 |
| commit | 90b1c81d64556c24ef208e7fd012c08b044d847e (patch) | |
| tree | 925c06b8679c1a4eaf9e8233d7125b44baa0d6d4 /gcc | |
| parent | e7ff6a46c9d852aeabae483b45e0e30bd6322a10 (diff) | |
| download | gcc-90b1c81d64556c24ef208e7fd012c08b044d847e.zip gcc-90b1c81d64556c24ef208e7fd012c08b044d847e.tar.gz gcc-90b1c81d64556c24ef208e7fd012c08b044d847e.tar.bz2 | |
re PR target/70677 (Suboptimal cond on AVR: unneeded stack frame)
PR 70677
* common/config/avr/avr-common.c (avr_option_optimization_table)
[OPT_LEVELS_ALL]: Turn off -fcaller-saves.
From-SVN: r239117
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/common/config/avr/avr-common.c | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0e5eea4..940096a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2016-08-04 Georg-Johann Lay <avr@gjlay.de> + PR 70677 + * common/config/avr/avr-common.c (avr_option_optimization_table) + [OPT_LEVELS_ALL]: Turn off -fcaller-saves. + +2016-08-04 Georg-Johann Lay <avr@gjlay.de> + PR 55181 * config/avr/avr.md: New pattern to work around do_store_flag generating shift instructions for bit extractions. diff --git a/gcc/common/config/avr/avr-common.c b/gcc/common/config/avr/avr-common.c index d0272e4..75c87717 100644 --- a/gcc/common/config/avr/avr-common.c +++ b/gcc/common/config/avr/avr-common.c @@ -28,6 +28,9 @@ static const struct default_options avr_option_optimization_table[] = { { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 }, + // The only effect of -fcaller-saves might be that it triggers + // a frame without need when it tries to be smart around calls. + { OPT_LEVELS_ALL, OPT_fcaller_saves, NULL, 0 }, { OPT_LEVELS_NONE, 0, NULL, 0 } }; |