Fix g++.dg/lto/alias-1 and 2 for non-plugin builds

[Jan Hubicka]

Hi,
alias-1 and alias-2 fails with -fno-use-inliner-plugin because the
inlinig it relies on does not happen. This is because w/o resolution
info we can not optimize away the offline copy and we know that main
is executed once and optimize for size.

Bootsrapped/regtested x86_64-linux, comitted.

Honza

Index: ChangeLog
===================================================================
--- ChangeLog   (revision 272846)
+++ ChangeLog   (working copy)
@@ -1,3 +1,11 @@
+2019-07-01  Jan Hubicka  <hubi...@ucw.cz>
+
+       PR lto/91028
+       PR lto/90720
+       * g++.dg/lto/alias-1_0.C: Add loop to make inlining happen with
+       -fno-use-linker-plugin
+       * g++.dg/lto/alias-2_0.C: Likewise.
+
 2019-07-01  Dominique d'Humieres  <domi...@gcc.gnu.org>
 
        * g++.dg/cpp0x/gen-attrs-67.C: Add error for darwin.
Index: g++.dg/lto/alias-1_0.C
===================================================================
--- g++.dg/lto/alias-1_0.C      (revision 272846)
+++ g++.dg/lto/alias-1_0.C      (working copy)
@@ -17,6 +17,7 @@ __attribute__ ((used))
 struct b **bptr = (struct b**)&aptr;
 extern void init ();
 extern void inline_me_late (int);
+int n=1;
 
 
 int
@@ -24,7 +25,8 @@ main (int argc, char **argv)
 {
   init ();
   aptr = 0;
-  inline_me_late (argc);
+  for (int i=0; i<n; i++)
+    inline_me_late (argc);
   if (!__builtin_constant_p (aptr == 0))
     __builtin_abort ();
   return (size_t)aptr;
Index: g++.dg/lto/alias-2_0.C
===================================================================
--- g++.dg/lto/alias-2_0.C      (revision 272846)
+++ g++.dg/lto/alias-2_0.C      (working copy)
@@ -17,6 +17,7 @@ __attribute__ ((used))
 struct b **bptr = (struct b**)&aptr;
 extern void init ();
 extern void inline_me_late (int);
+int n=1;
 
 
 int
@@ -24,7 +25,8 @@ main (int argc, char **argv)
 {
   init ();
   aptr = 0;
-  inline_me_late (argc);
+  for (int i=0; i<n; i++)
+    inline_me_late (argc);
   if (!__builtin_constant_p (aptr == 0))
     __builtin_abort ();
   return (size_t)aptr;