tree-ssa-structalias.c (ipa_pta_execute): Handle address-taken functions.

2015-06-01  Richard Biener  <rguenther@suse.de>

	* tree-ssa-structalias.c (ipa_pta_execute): Handle address-taken
	functions.

	* gcc.dg/ipa/ipa-pta-1.c: Adjust.

From-SVN: r223977

gcc/ChangeLog

+2015-06-01  Richard Biener  <rguenther@suse.de>
+
+	* tree-ssa-structalias.c (ipa_pta_execute): Handle address-taken
+	functions.
+
 2015-06-01  Martin Liska  <mliska@suse.cz>
 
 	* alloc-pool.h: Add ATTRIBUTE_UNUSED for

gcc/testsuite/ChangeLog

+2015-06-01  Richard Biener  <rguenther@suse.de>
+
+	* gcc.dg/ipa/ipa-pta-1.c: Adjust.
+
 2015-06-01  Jakub Jelinek  <jakub@redhat.com>
 
 	* gcc.target/s390/hotpatch-compile-15.c: Remove dg-prune-output

gcc/testsuite/gcc.dg/ipa/ipa-pta-1.c

@@ -40,10 +40,13 @@ int main()
 }
 
 /* IPA PTA needs to handle indirect calls properly.  Verify that
-   both bar and foo get a (and only a) in their arguments points-to sets.  */
+   both bar and foo get a (and only a) in their arguments points-to sets.
+   ???  As bar and foo have their address taken there might be callers
+   not seen by IPA PTA (if the address escapes the unit which we only compute
+   during IPA PTA...).  Thus the solution also includes NONLOCAL.  */
 
 /* { dg-final { scan-ipa-dump "fn_1 = { bar foo }" "pta" } } */
-/* { dg-final { scan-ipa-dump "bar.arg0 = { a }" "pta" } } */
-/* { dg-final { scan-ipa-dump "bar.arg1 = { a }" "pta" } } */
-/* { dg-final { scan-ipa-dump "foo.arg0 = { a }" "pta" } } */
-/* { dg-final { scan-ipa-dump "foo.arg1 = { a }" "pta" } } */
+/* { dg-final { scan-ipa-dump "bar.arg0 = { NONLOCAL a }" "pta" } } */
+/* { dg-final { scan-ipa-dump "bar.arg1 = { NONLOCAL a }" "pta" } } */
+/* { dg-final { scan-ipa-dump "foo.arg0 = { NONLOCAL a }" "pta" } } */
+/* { dg-final { scan-ipa-dump "foo.arg1 = { NONLOCAL a }" "pta" } } */

gcc/tree-ssa-structalias.c

@@ -7369,7 +7369,8 @@ ipa_pta_execute (void)
 	 constraints for parameters.  */
       if (node->used_from_other_partition
 	  || node->externally_visible
-	  || node->force_output)
+	  || node->force_output
+	  || node->address_taken)
 	{
 	  intra_create_variable_infos (func);