diff options
| author | steven <steven@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-01-27 16:32:12 +0000 |
|---|---|---|
| committer | steven <steven@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-01-27 16:32:12 +0000 |
| commit | 523a88b02c9c2795e21a6e7e026c83d0a27c60c3 (patch) | |
| tree | dc324f82ea9932fb68be7d5ec9da7f0000e695a7 /gcc/opts.c | |
| parent | 93f291706e5b497b4d683c5e9a6f3c6933ea7d61 (diff) | |
| download | gcc-523a88b02c9c2795e21a6e7e026c83d0a27c60c3.tar.gz | |
PR middle-end/17278
* opts.c (decode_options): Move flag_thread_jumps from -O1 and
higher to -O2 and higher. Likewise for tree PRE.
* tree-ssa-dom.c (tree_ssa_dominator_optimize): Only iterate at -O2
and better.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@94325 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/opts.c')
| -rw-r--r-- | gcc/opts.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/gcc/opts.c b/gcc/opts.c index 1dd9da1619d..b5e2930c842 100644 --- a/gcc/opts.c +++ b/gcc/opts.c @@ -481,7 +481,6 @@ decode_options (unsigned int argc, const char **argv) if (optimize >= 1) { flag_defer_pop = 1; - flag_thread_jumps = 1; #ifdef DELAY_SLOTS flag_delayed_branch = 1; #endif @@ -510,14 +509,12 @@ decode_options (unsigned int argc, const char **argv) the condition is satisfied in the first iteration and therefore to eliminate it. Jump threading handles these cases now. */ flag_tree_ch = 1; - - /* PRE tends to generate bigger code. */ - flag_tree_pre = 1; } } if (optimize >= 2) { + flag_thread_jumps = 1; flag_crossjumping = 1; flag_optimize_sibling_calls = 1; flag_cse_follow_jumps = 1; @@ -540,6 +537,12 @@ decode_options (unsigned int argc, const char **argv) flag_reorder_blocks = 1; flag_reorder_functions = 1; flag_unit_at_a_time = 1; + + if (!optimize_size) + { + /* PRE tends to generate bigger code. */ + flag_tree_pre = 1; + } } if (optimize >= 3) |