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| author | Martin Liska <mliska@suse.cz> | 2017-06-21 14:51:46 +0200 |
|---|---|---|
| committer | Martin Liska <marxin@gcc.gnu.org> | 2017-06-21 12:51:46 +0000 |
| commit | e59a1c22fb249388e82b4fd004f33615abe36d2e (patch) | |
| tree | 0ba9b3f978dc6746d354dccdfb340b58bb47cbfb /gcc/tree-tailcall.c | |
| parent | ff9baa5f1c532a43d7d14a800f5a4a5c5757dca6 (diff) | |
| download | gcc-e59a1c22fb249388e82b4fd004f33615abe36d2e.zip gcc-e59a1c22fb249388e82b4fd004f33615abe36d2e.tar.gz gcc-e59a1c22fb249388e82b4fd004f33615abe36d2e.tar.bz2 | |
Make early return predictor more precise.
2017-06-21 Martin Liska <mliska@suse.cz>
PR tree-optimization/79489
* gimplify.c (maybe_add_early_return_predict_stmt): New
function.
(gimplify_return_expr): Call the function.
* predict.c (tree_estimate_probability_bb): Remove handling
of early return.
* predict.def: Update comment about early return predictor.
* gimple-predict.h (is_gimple_predict): New function.
* predict.def: Change default value of early return to 66.
* tree-tailcall.c (find_tail_calls): Skip GIMPLE_PREDICT
statements.
* passes.def: Put pass_strip_predict_hints to the beginning of
IPA passes.
From-SVN: r249450
Diffstat (limited to 'gcc/tree-tailcall.c')
| -rw-r--r-- | gcc/tree-tailcall.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/tree-tailcall.c b/gcc/tree-tailcall.c index b705338..6aa9a56 100644 --- a/gcc/tree-tailcall.c +++ b/gcc/tree-tailcall.c @@ -421,6 +421,7 @@ find_tail_calls (basic_block bb, struct tailcall **ret) if (gimple_code (stmt) == GIMPLE_LABEL || gimple_code (stmt) == GIMPLE_RETURN || gimple_code (stmt) == GIMPLE_NOP + || gimple_code (stmt) == GIMPLE_PREDICT || gimple_clobber_p (stmt) || is_gimple_debug (stmt)) continue; @@ -555,6 +556,7 @@ find_tail_calls (basic_block bb, struct tailcall **ret) if (gimple_code (stmt) == GIMPLE_LABEL || gimple_code (stmt) == GIMPLE_NOP + || gimple_code (stmt) == GIMPLE_PREDICT || gimple_clobber_p (stmt) || is_gimple_debug (stmt)) continue; |