diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2014-01-13 08:56:40 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2014-01-13 08:56:40 +0100 |
| commit | 8175be9a8330acffdff270d5cad85b0d637e8f49 (patch) | |
| tree | 5bc66d47b8e37f7add33a1760d03efd4927a1641 /gcc/omp-low.c | |
| parent | 131241a395a9aea1490f1650fc4b79eb1994f360 (diff) | |
| download | gcc-8175be9a8330acffdff270d5cad85b0d637e8f49.zip gcc-8175be9a8330acffdff270d5cad85b0d637e8f49.tar.gz gcc-8175be9a8330acffdff270d5cad85b0d637e8f49.tar.bz2 | |
re PR libgomp/59194 (tsan detects race for real variables in an OMP reduction clause)
PR libgomp/59194
* omp-low.c (expand_omp_atomic_pipeline): Expand the initial
load as __atomic_load_N if possible.
From-SVN: r206572
Diffstat (limited to 'gcc/omp-low.c')
| -rw-r--r-- | gcc/omp-low.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/gcc/omp-low.c b/gcc/omp-low.c index 05513ee..5a09b33 100644 --- a/gcc/omp-low.c +++ b/gcc/omp-low.c @@ -7536,12 +7536,21 @@ expand_omp_atomic_pipeline (basic_block load_bb, basic_block store_bb, loadedi = loaded_val; } + fncode = (enum built_in_function) (BUILT_IN_ATOMIC_LOAD_N + index + 1); + tree loaddecl = builtin_decl_explicit (fncode); + if (loaddecl) + initial + = fold_convert (TREE_TYPE (TREE_TYPE (iaddr)), + build_call_expr (loaddecl, 2, iaddr, + build_int_cst (NULL_TREE, + MEMMODEL_RELAXED))); + else + initial = build2 (MEM_REF, TREE_TYPE (TREE_TYPE (iaddr)), iaddr, + build_int_cst (TREE_TYPE (iaddr), 0)); + initial - = force_gimple_operand_gsi (&si, - build2 (MEM_REF, TREE_TYPE (TREE_TYPE (iaddr)), - iaddr, - build_int_cst (TREE_TYPE (iaddr), 0)), - true, NULL_TREE, true, GSI_SAME_STMT); + = force_gimple_operand_gsi (&si, initial, true, NULL_TREE, true, + GSI_SAME_STMT); /* Move the value to the LOADEDI temporary. */ if (gimple_in_ssa_p (cfun)) |