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| author | Jakub Jelinek <jakub@redhat.com> | 2016-06-28 10:27:18 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2016-06-28 10:27:18 +0200 |
| commit | 849a76a5a20db3830b3a627aae1b8c7eb0f1623d (patch) | |
| tree | 532f4d56f6e6da5f9c6f2a7cf4ae65a7b9a8342d /gcc/gimple-fold.h | |
| parent | a826405801ce4e28d534e3f693f236405d886caf (diff) | |
| download | gcc-849a76a5a20db3830b3a627aae1b8c7eb0f1623d.zip gcc-849a76a5a20db3830b3a627aae1b8c7eb0f1623d.tar.gz gcc-849a76a5a20db3830b3a627aae1b8c7eb0f1623d.tar.bz2 | |
re PR middle-end/66867 (Suboptimal code generation for atomic_compare_exchange)
PR middle-end/66867
* builtins.c (expand_ifn_atomic_compare_exchange_into_call,
expand_ifn_atomic_compare_exchange): New functions.
* internal-fn.c (expand_ATOMIC_COMPARE_EXCHANGE): New function.
* tree.h (build_call_expr_internal_loc): Rename to ...
(build_call_expr_internal_loc_array): ... this. Fix up type of
last argument.
* internal-fn.def (ATOMIC_COMPARE_EXCHANGE): New internal fn.
* predict.c (expr_expected_value_1): Handle IMAGPART_EXPR of
ATOMIC_COMPARE_EXCHANGE result.
* builtins.h (expand_ifn_atomic_compare_exchange): New prototype.
* gimple-fold.h (optimize_atomic_compare_exchange_p,
fold_builtin_atomic_compare_exchange): New prototypes.
* gimple-fold.c (optimize_atomic_compare_exchange_p,
fold_builtin_atomic_compare_exchange): New functions..
* tree-ssa.c (execute_update_addresses_taken): If
optimize_atomic_compare_exchange_p, ignore &var in 2nd argument
of call when finding addressable vars, and if such var becomes
non-addressable, call fold_builtin_atomic_compare_exchange.
From-SVN: r237814
Diffstat (limited to 'gcc/gimple-fold.h')
| -rw-r--r-- | gcc/gimple-fold.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/gimple-fold.h b/gcc/gimple-fold.h index 459c68d..f314714 100644 --- a/gcc/gimple-fold.h +++ b/gcc/gimple-fold.h @@ -32,6 +32,8 @@ extern tree maybe_fold_and_comparisons (enum tree_code, tree, tree, enum tree_code, tree, tree); extern tree maybe_fold_or_comparisons (enum tree_code, tree, tree, enum tree_code, tree, tree); +extern bool optimize_atomic_compare_exchange_p (gimple *); +extern void fold_builtin_atomic_compare_exchange (gimple_stmt_iterator *); extern bool arith_overflowed_p (enum tree_code, const_tree, const_tree, const_tree); extern tree no_follow_ssa_edges (tree); |