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| author | Jason Merrill <jason@redhat.com> | 2004-06-10 23:26:31 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2004-06-10 23:26:31 -0400 |
| commit | 3bcb4e37d15296c7aad59f8591876ccfa28f6c31 (patch) | |
| tree | 286dfd310c69cb69eb51a600c9b4516f6e965fb7 /gcc/gimplify.c | |
| parent | 3100d647250b4209a601763e7887936d25899f3f (diff) | |
| download | gcc-3bcb4e37d15296c7aad59f8591876ccfa28f6c31.zip gcc-3bcb4e37d15296c7aad59f8591876ccfa28f6c31.tar.gz gcc-3bcb4e37d15296c7aad59f8591876ccfa28f6c31.tar.bz2 | |
gimplify.c (gimplify_modify_expr): Don't force a temporary of an aggregate_value_p type.
* gimplify.c (gimplify_modify_expr): Don't force a temporary
of an aggregate_value_p type.
From-SVN: r82959
Diffstat (limited to 'gcc/gimplify.c')
| -rw-r--r-- | gcc/gimplify.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/gcc/gimplify.c b/gcc/gimplify.c index c25a891..a4b9c70 100644 --- a/gcc/gimplify.c +++ b/gcc/gimplify.c @@ -2493,12 +2493,16 @@ gimplify_modify_expr (tree *expr_p, tree *pre_p, tree *post_p, bool want_value) FIXME this should be handled by the is_gimple_rhs predicate. */ - if (TREE_CODE (*from_p) == CALL_EXPR - || (flag_non_call_exceptions && tree_could_trap_p (*from_p)) - /* If we're dealing with a renamable type, either source or dest - must be a renamed variable. */ - || (is_gimple_reg_type (TREE_TYPE (*from_p)) - && !is_gimple_reg (*to_p))) + if (aggregate_value_p (TREE_TYPE (*from_p), NULL_TREE)) + /* Don't force a temp of a large aggregate type; the copy could be + arbitrarily expensive. Instead we will generate a V_MAY_DEF for + the assignment. */; + else if (TREE_CODE (*from_p) == CALL_EXPR + || (flag_non_call_exceptions && tree_could_trap_p (*from_p)) + /* If we're dealing with a renamable type, either source or dest + must be a renamed variable. */ + || (is_gimple_reg_type (TREE_TYPE (*from_p)) + && !is_gimple_reg (*to_p))) gimplify_expr (from_p, pre_p, post_p, is_gimple_val, fb_rvalue); /* If the value being copied is of variable width, expose the length |