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| author | Martin Jambor <mjambor@suse.cz> | 2011-09-23 15:22:43 +0200 |
|---|---|---|
| committer | Martin Jambor <jamborm@gcc.gnu.org> | 2011-09-23 15:22:43 +0200 |
| commit | c75732496d9ad114b50a9a94b71d028bf4168059 (patch) | |
| tree | 6135c26161cc96ff691578b1f52f3932115d3f86 /gcc/ipa-cp.c | |
| parent | 5d94b9886327df3f4b977d4bc0d1d09c1b6d3220 (diff) | |
| download | gcc-c75732496d9ad114b50a9a94b71d028bf4168059.zip gcc-c75732496d9ad114b50a9a94b71d028bf4168059.tar.gz gcc-c75732496d9ad114b50a9a94b71d028bf4168059.tar.bz2 | |
ipa-prop.h (jump_func_type): Updated comments.
2011-09-23 Martin Jambor <mjambor@suse.cz>
* ipa-prop.h (jump_func_type): Updated comments.
(ipa_known_type_data): New type.
(ipa_jump_func): Use it to describe known type jump functions.
* ipa-prop.c (ipa_print_node_jump_functions_for_edge): Updated to
reflect the new known type jump function contents.
(compute_known_type_jump_func): Likewise.
(combine_known_type_and_ancestor_jfs): Likewise.
(try_make_edge_direct_virtual_call): Likewise.
(ipa_write_jump_function): Likewise.
(ipa_read_jump_function): Likewise.
* ipa-cp.c (ipa_value_from_known_type_jfunc): New function.
(ipa_value_from_jfunc): Use ipa_value_from_known_type_jfunc.
(propagate_accross_jump_function): Likewise.
From-SVN: r179117
Diffstat (limited to 'gcc/ipa-cp.c')
| -rw-r--r-- | gcc/ipa-cp.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c index f440b1d..45cb00b 100644 --- a/gcc/ipa-cp.c +++ b/gcc/ipa-cp.c @@ -674,6 +674,20 @@ ipa_get_jf_ancestor_result (struct ipa_jump_func *jfunc, tree input) return NULL_TREE; } +/* Extract the acual BINFO being described by JFUNC which must be a known type + jump function. */ + +static tree +ipa_value_from_known_type_jfunc (struct ipa_jump_func *jfunc) +{ + tree base_binfo = TYPE_BINFO (jfunc->value.known_type.base_type); + if (!base_binfo) + return NULL_TREE; + return get_binfo_at_offset (base_binfo, + jfunc->value.known_type.offset, + jfunc->value.known_type.component_type); +} + /* Determine whether JFUNC evaluates to a known value (that is either a constant or a binfo) and if so, return it. Otherwise return NULL. INFO describes the caller node so that pass-through jump functions can be @@ -685,7 +699,7 @@ ipa_value_from_jfunc (struct ipa_node_params *info, struct ipa_jump_func *jfunc) if (jfunc->type == IPA_JF_CONST) return jfunc->value.constant; else if (jfunc->type == IPA_JF_KNOWN_TYPE) - return jfunc->value.base_binfo; + return ipa_value_from_known_type_jfunc (jfunc); else if (jfunc->type == IPA_JF_PASS_THROUGH || jfunc->type == IPA_JF_ANCESTOR) { @@ -991,7 +1005,11 @@ propagate_accross_jump_function (struct cgraph_edge *cs, tree val; if (jfunc->type == IPA_JF_KNOWN_TYPE) - val = jfunc->value.base_binfo; + { + val = ipa_value_from_known_type_jfunc (jfunc); + if (!val) + return set_lattice_contains_variable (dest_lat); + } else val = jfunc->value.constant; return add_value_to_lattice (dest_lat, val, cs, NULL, 0); |