diff options
Diffstat (limited to 'gcc/tree-outof-ssa.c')
| -rw-r--r-- | gcc/tree-outof-ssa.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/gcc/tree-outof-ssa.c b/gcc/tree-outof-ssa.c index 827f91d1511..7da0e5920c0 100644 --- a/gcc/tree-outof-ssa.c +++ b/gcc/tree-outof-ssa.c @@ -1634,12 +1634,20 @@ find_replaceable_in_bb (temp_expr_table_p tab, basic_block bb) var_map map = tab->map; value_expr_p p; ssa_op_iter iter; + bitmap_iterator bi; for (bsi = bsi_start (bb); !bsi_end_p (bsi); bsi_next (&bsi)) { stmt = bsi_stmt (bsi); ann = stmt_ann (stmt); + if (TREE_CODE (stmt) == ASM_EXPR && ASM_VOLATILE_P (stmt)) + { + /* Volatile ASM_EXPRs kill all current expressions. */ + EXECUTE_IF_SET_IN_BITMAP ((tab->partition_in_use), 0, partition, bi) + kill_expr (tab, partition, false); + continue; + } /* Determine if this stmt finishes an existing expression. */ FOR_EACH_SSA_TREE_OPERAND (def, stmt, iter, SSA_OP_USE) { @@ -1912,8 +1920,6 @@ rewrite_trees (var_map map, tree *values) && (DEF_FROM_PTR (def_p) == USE_OP (uses, 0))) remove = 1; } - if (changed & !remove) - modify_stmt (stmt); } /* Remove any stmts marked for removal. */ @@ -2022,6 +2028,9 @@ remove_ssa_form (FILE *dump, var_map map, int flags) } } + /* we no longer maintain the SSA operand cache at this point. */ + fini_ssa_operands (); + dump_file = save; } |