re PR rtl-optimization/56732 (ICE in advance_target_bb)

gcc/ChangeLog

2013-05-02  Greta Yorsh  <Greta.Yorsh@arm.com>

	PR target/56732
	* config/arm/arm.c (arm_expand_epilogue): Check really_return before
	generating simple_return for naked functions.

gcc/testsuite/ChangeLog

2013-05-02  Greta Yorsh  <Greta.Yorsh@arm.com>

	PR target/56732
	* gcc.target/arm/pr56732-1.c: New test.

From-SVN: r198547

gcc/ChangeLog

+2013-05-02  Greta Yorsh  <Greta.Yorsh@arm.com>
+
+	PR target/56732
+	* config/arm/arm.c (arm_expand_epilogue): Check really_return before
+	generating simple_return for naked functions.
+
 2013-05-02  Martin Jambor  <mjambor@suse.cz>
 
 	PR middle-end/56988

gcc/config/arm/arm.c

@@ -24114,7 +24114,8 @@ arm_expand_epilogue (bool really_return)
   if (IS_NAKED (func_type)
       || (IS_VOLATILE (func_type) && TARGET_ABORT_NORETURN))
     {
-      emit_jump_insn (simple_return_rtx);
+      if (really_return)
+        emit_jump_insn (simple_return_rtx);
       return;
     }
 

gcc/testsuite/ChangeLog

+2013-05-02  Greta Yorsh  <Greta.Yorsh@arm.com>
+
+	PR target/56732
+	* gcc.target/arm/pr56732-1.c: New test.
+
 2013-05-02  Martin Jambor  <mjambor@suse.cz>
 
 	PR middle-end/56988

gcc/testsuite/gcc.target/arm/pr56732-1.c

+/* { dg-do compile } */
+/* { dg-require-effective-target naked_functions } */
+/* { dg-options "-O2 -Wall" } */
+extern void bar();
+
+void __attribute__((__naked__))
+foo(void)
+{
+  bar ();
+}
+
+int __attribute__((naked))
+zoo (int a, int b, int c, int d, int e, int f)
+{
+  bar ();
+  return e;
+}
+/* Verify that __attribute__((naked)) produces a naked function that
+   does not use bx to return. */
+/* { dg-final { scan-assembler-not "\tbx\tlr" } } */