diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/expr.c | 15 |
2 files changed, 18 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index cb41a5d..9ad61e2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2007-02-15 Eric Botcazou <ebotcazou@adacore.com> + + * expr.c (expand_expr_real_1) <normal_inner_ref>: If a temporary + is made and the reference doesn't use the alias set of its type, + do not create the temporary using that type. + 2007-02-15 Aldy Hernandez <aldyh@redhat.com> * jump.c: Remove prototypes for delete_computation and @@ -7711,9 +7711,18 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode, necessarily be constant. */ if (mode == BLKmode) { - rtx new - = assign_stack_temp_for_type - (ext_mode, GET_MODE_BITSIZE (ext_mode), 0, type); + HOST_WIDE_INT size = GET_MODE_BITSIZE (ext_mode); + rtx new; + + /* If the reference doesn't use the alias set of its type, + we cannot create the temporary using that type. */ + if (component_uses_parent_alias_set (exp)) + { + new = assign_stack_local (ext_mode, size, 0); + set_mem_alias_set (new, get_alias_set (exp)); + } + else + new = assign_stack_temp_for_type (ext_mode, size, 0, type); emit_move_insn (new, op0); op0 = copy_rtx (new); |