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Diffstat (limited to 'gcc/tree-ssa-dce.c')
| -rw-r--r-- | gcc/tree-ssa-dce.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c index 4853f0bd..2478219 100644 --- a/gcc/tree-ssa-dce.c +++ b/gcc/tree-ssa-dce.c @@ -1328,12 +1328,16 @@ eliminate_unnecessary_stmts (void) update_stmt (stmt); release_ssa_name (name); - /* GOMP_SIMD_LANE or ASAN_POISON without lhs is not - needed. */ + /* GOMP_SIMD_LANE (unless two argument) or ASAN_POISON + without lhs is not needed. */ if (gimple_call_internal_p (stmt)) switch (gimple_call_internal_fn (stmt)) { case IFN_GOMP_SIMD_LANE: + if (gimple_call_num_args (stmt) >= 2 + && !integer_nonzerop (gimple_call_arg (stmt, 1))) + break; + /* FALLTHRU */ case IFN_ASAN_POISON: remove_dead_stmt (&gsi, bb, to_remove_edges); break; |