diff options
Diffstat (limited to 'gcc/tree-ssa-math-opts.cc')
| -rw-r--r-- | gcc/tree-ssa-math-opts.cc | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/gcc/tree-ssa-math-opts.cc b/gcc/tree-ssa-math-opts.cc index ac277756d24..7555793948e 100644 --- a/gcc/tree-ssa-math-opts.cc +++ b/gcc/tree-ssa-math-opts.cc @@ -1113,7 +1113,7 @@ make_pass_cse_reciprocals (gcc::context *ctxt) conversions. Return the prevailing name. */ static tree -execute_cse_conv_1 (tree name) +execute_cse_conv_1 (tree name, bool *cfg_changed) { if (SSA_NAME_IS_DEFAULT_DEF (name) || SSA_NAME_OCCURS_IN_ABNORMAL_PHI (name)) @@ -1189,15 +1189,18 @@ execute_cse_conv_1 (tree name) || !types_compatible_p (TREE_TYPE (name), TREE_TYPE (lhs))) continue; - if (gimple_bb (def_stmt) == gimple_bb (use_stmt) - || dominated_by_p (CDI_DOMINATORS, gimple_bb (use_stmt), - gimple_bb (def_stmt))) + basic_block use_bb = gimple_bb (use_stmt); + if (gimple_bb (def_stmt) == use_bb + || dominated_by_p (CDI_DOMINATORS, use_bb, gimple_bb (def_stmt))) { sincos_stats.conv_removed++; gimple_stmt_iterator gsi = gsi_for_stmt (use_stmt); replace_uses_by (lhs, name); - gsi_remove (&gsi, true); + if (gsi_remove (&gsi, true) + && gimple_purge_dead_eh_edges (use_bb)) + *cfg_changed = true; + release_defs (use_stmt); } } @@ -1252,7 +1255,7 @@ execute_cse_sincos_1 (tree name) int i; bool cfg_changed = false; - name = execute_cse_conv_1 (name); + name = execute_cse_conv_1 (name, &cfg_changed); FOR_EACH_IMM_USE_STMT (use_stmt, use_iter, name) { @@ -1459,7 +1462,7 @@ powi_cost (HOST_WIDE_INT n) return 0; /* Ignore the reciprocal when calculating the cost. */ - val = (n < 0) ? -n : n; + val = absu_hwi (n); /* Initialize the exponent cache. */ memset (cache, 0, POWI_TABLE_SIZE * sizeof (bool)); |