+2016-04-26 Bernd Schmidt <bschmidt@redhat.com>
+
+ PR rtl-optimization/57193
+ * opts.c (default_options_table): Add OPT_frename_registers at -O2
+ and above.
+ * doc/invoke.texi (-frename-registers, -O2): Update documentation.
+
2016-04-26 Bin Cheng <bin.cheng@arm.com>
* tree-if-conv.c (any_pred_load_store): New static variable.
-foptimize-strlen @gol
-fpartial-inlining @gol
-fpeephole2 @gol
+-frename-registers @gol
-freorder-blocks-algorithm=stc @gol
-freorder-blocks-and-partition -freorder-functions @gol
-frerun-cse-after-loop @gol
make debugging impossible, since variables no longer stay in
a ``home register''.
-Enabled by default with @option{-funroll-loops} and @option{-fpeel-loops}.
+Enabled by default with @option{-funroll-loops} and @option{-fpeel-loops},
+and also enabled at levels @option{-O2} and @option{-O3}.
@item -fschedule-fusion
@opindex fschedule-fusion
{ OPT_LEVELS_2_PLUS, OPT_fstrict_overflow, NULL, 1 },
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_freorder_blocks_algorithm_, NULL,
REORDER_BLOCKS_ALGORITHM_STC },
+ { OPT_LEVELS_2_PLUS, OPT_frename_registers, NULL, 1 },
{ OPT_LEVELS_2_PLUS, OPT_freorder_functions, NULL, 1 },
{ OPT_LEVELS_2_PLUS, OPT_ftree_vrp, NULL, 1 },
{ OPT_LEVELS_2_PLUS, OPT_ftree_pre, NULL, 1 },