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| author | Richard Biener <rguenther@suse.de> | 2016-11-17 12:38:47 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2016-11-17 12:38:47 +0000 |
| commit | bef69eb57d7958e119fa581b376c6e05cb838c38 (patch) | |
| tree | 01abd7f17d9a9481753fcc1c88bf79d8895ab390 /gcc/doc | |
| parent | c90928c8d6a1837696fbf5daf0016ed0e675a3b7 (diff) | |
| download | gcc-bef69eb57d7958e119fa581b376c6e05cb838c38.zip gcc-bef69eb57d7958e119fa581b376c6e05cb838c38.tar.gz gcc-bef69eb57d7958e119fa581b376c6e05cb838c38.tar.bz2 | |
common.opt (ftree-loop-if-convert-stores): Mark as preserved for backward compatibility.
2016-11-17 Richard Biener <rguenther@suse.de>
* common.opt (ftree-loop-if-convert-stores): Mark as preserved for
backward compatibility.
* doc/invoke.texi (ftree-loop-if-convert-stores): Remove.
* tree-if-conv.c (pass_if_conversion::gate): Do not test
flag_tree_loop_if_convert_stores.
(pass_if_conversion::execute): Likewise.
From-SVN: r242542
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 620225c..e6c3dc2 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -412,7 +412,7 @@ Objective-C and Objective-C++ Dialects}. -ftree-builtin-call-dce -ftree-ccp -ftree-ch @gol -ftree-coalesce-vars -ftree-copy-prop -ftree-dce -ftree-dominator-opts @gol -ftree-dse -ftree-forwprop -ftree-fre -fcode-hoisting -ftree-loop-if-convert @gol --ftree-loop-if-convert-stores -ftree-loop-im @gol +-ftree-loop-im @gol -ftree-phiprop -ftree-loop-distribution -ftree-loop-distribute-patterns @gol -ftree-loop-ivcanon -ftree-loop-linear -ftree-loop-optimize @gol -ftree-loop-vectorize @gol @@ -8061,24 +8061,6 @@ the innermost loops in order to improve the ability of the vectorization pass to handle these loops. This is enabled by default if vectorization is enabled. -@item -ftree-loop-if-convert-stores -@opindex ftree-loop-if-convert-stores -Attempt to also if-convert conditional jumps containing memory writes. -This transformation can be unsafe for multi-threaded programs as it -transforms conditional memory writes into unconditional memory writes. -For example, -@smallexample -for (i = 0; i < N; i++) - if (cond) - A[i] = expr; -@end smallexample -is transformed to -@smallexample -for (i = 0; i < N; i++) - A[i] = cond ? expr : A[i]; -@end smallexample -potentially producing data races. - @item -ftree-loop-distribution @opindex ftree-loop-distribution Perform loop distribution. This flag can improve cache performance on |