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-rw-r--r--gcc/ChangeLog6
-rw-r--r--gcc/common/config/avr/avr-common.c3
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 }
};