diff options
Diffstat (limited to 'gcc/tree-vrp.c')
| -rw-r--r-- | gcc/tree-vrp.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c index d7d7a0d..e023244 100644 --- a/gcc/tree-vrp.c +++ b/gcc/tree-vrp.c @@ -6974,8 +6974,20 @@ remove_range_assertions (void) } } - /* Propagate the RHS into every use of the LHS. */ - replace_uses_by (lhs, var); + /* Propagate the RHS into every use of the LHS. For SSA names + also propagate abnormals as it merely restores the original + IL in this case (an replace_uses_by would assert). */ + if (TREE_CODE (var) == SSA_NAME) + { + imm_use_iterator iter; + use_operand_p use_p; + gimple *use_stmt; + FOR_EACH_IMM_USE_STMT (use_stmt, iter, lhs) + FOR_EACH_IMM_USE_ON_STMT (use_p, iter) + SET_USE (use_p, var); + } + else + replace_uses_by (lhs, var); /* And finally, remove the copy, it is not needed. */ gsi_remove (&si, true); |