S/390: Fix PR84295

gcc/ChangeLog:

2018-02-09  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	PR target/PR84295
	* config/s390/s390.c (s390_set_current_function): Invoke
	s390_indirect_branch_settings also if fndecl didn't change.

gcc/testsuite/ChangeLog:

2018-02-09  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	PR target/PR84295
	* gcc.target/s390/pr84295.c: New test.

From-SVN: r257522

gcc/ChangeLog

+2018-02-09  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>
+
+	PR target/PR84295
+	* config/s390/s390.c (s390_set_current_function): Invoke
+	s390_indirect_branch_settings also if fndecl didn't change.
+
 2018-02-09  Alexandre Oliva <aoliva@redhat.com>
 
 	* config/rs6000/rs6000.md (blockage): Set length to zero.

gcc/config/s390/s390.c

@@ -16135,7 +16135,10 @@ s390_set_current_function (tree fndecl)
      several times in the course of compiling a function, and we don't want to
      slow things down too much or call target_reinit when it isn't safe.  */
   if (fndecl == s390_previous_fndecl)
-    return;
+    {
+      s390_indirect_branch_settings (fndecl);
+      return;
+    }
 
   tree old_tree;
   if (s390_previous_fndecl == NULL_TREE)

gcc/testsuite/ChangeLog

+2018-02-09  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>
+
+	PR target/PR84295
+	* gcc.target/s390/pr84295.c: New test.
+
 2018-02-09  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/77522

gcc/testsuite/gcc.target/s390/pr84295.c

+/* { dg-do compile } */
+/* { dg-options "-O3 -march=z900 -fgnu89-inline --save-temps -mfunction-return-reg=thunk -mindirect-branch-table" } */
+
+extern void foo (void);
+extern __inline  void foo (void) {}
+void foo (void) {}
+
+/* { dg-final { scan-assembler-times "jg\t__s390_indirect_jump" 1 } } */
+/* { dg-final { scan-assembler "ex\t" } } */
+
+/* { dg-final { scan-assembler-not "section\t.s390_indirect_jump" } } */
+/* { dg-final { scan-assembler-not "section\t.s390_indirect_call" } } */
+/* { dg-final { scan-assembler     "section\t.s390_return_reg" } } */
+/* { dg-final { scan-assembler-not "section\t.s390_return_mem" } } */