From befdad071460a1bb49cb37691c73721f2e88c282 Mon Sep 17 00:00:00 2001 From: Eric Botcazou Date: Thu, 15 Feb 2007 20:51:29 +0000 Subject: [PATCH] expr.c (expand_expr_real_1): If a temporary is made and the reference doesn't use the alias set of its type... * expr.c (expand_expr_real_1) : 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. From-SVN: r122014 --- gcc/ChangeLog | 6 ++++++ gcc/expr.c | 15 ++++++++++++--- 2 files changed, 18 insertions(+), 3 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index cb41a5d4f12..9ad61e22128 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2007-02-15 Eric Botcazou + + * expr.c (expand_expr_real_1) : 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 * jump.c: Remove prototypes for delete_computation and diff --git a/gcc/expr.c b/gcc/expr.c index 09a67891eef..42cb253e72e 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -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);