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ipa-cp.c (ipcp_versionable_function_p): Walk cgraph edges instead of function body... 

* ipa-cp.c (ipcp_versionable_function_p): Walk cgraph edges instead of
	function body; do not check stdarg field of struct function.

From-SVN: r159472
This commit is contained in:
Jan Hubicka 2010-05-17 09:01:26 +02:00 committed by Jan Hubicka
parent c4b4455fa9
commit 199f1dc47f
2 changed files with 14 additions and 23 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-05-16 Jan Hubicka <jh@suse.cz>
* ipa-cp.c (ipcp_versionable_function_p): Walk cgraph edges instead of
function body; do not check stdarg field of struct function.
2010-05-16 Jan Hubicka <jh@suse.cz>
* cgraph.c (dump_cgraph_node): Dump versionable flag.

32
gcc/ipa-cp.c
View File

@ -416,35 +416,21 @@ ipcp_print_all_lattices (FILE * f)
static bool
ipcp_versionable_function_p (struct cgraph_node *node)
{
tree decl = node->decl;
basic_block bb;
struct cgraph_edge *edge;
/* There are a number of generic reasons functions cannot be versioned. */
if (!node->local.versionable)
return false;
/* Removing arguments doesn't work if the function takes varargs. */
if (DECL_STRUCT_FUNCTION (decl)->stdarg)
return false;
/* Removing arguments doesn't work if we use __builtin_apply_args. */
FOR_EACH_BB_FN (bb, DECL_STRUCT_FUNCTION (decl))
/* Removing arguments doesn't work if the function takes varargs
or use __builtin_apply_args. */
for (edge = node->callees; edge; edge = edge->next_callee)
{
gimple_stmt_iterator gsi;
for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
{
const_gimple stmt = gsi_stmt (gsi);
tree t;
if (!is_gimple_call (stmt))
continue;
t = gimple_call_fndecl (stmt);
if (t == NULL_TREE)
continue;
if (DECL_BUILT_IN_CLASS (t) == BUILT_IN_NORMAL
&& DECL_FUNCTION_CODE (t) == BUILT_IN_APPLY_ARGS)
return false;
}
tree t = edge->callee->decl;
if (DECL_BUILT_IN_CLASS (t) == BUILT_IN_NORMAL
&& (DECL_FUNCTION_CODE (t) == BUILT_IN_APPLY_ARGS
|| DECL_FUNCTION_CODE (t) == BUILT_IN_VA_START))
return false;
}
return true;