Add some more test cases for fentry and pg

Test fentry and no_instrument_function overriding.

gcc/testsuite/:

2014-09-15  Andi Kleen  <ak@linux.intel.com>

	* gcc.dg/pg-override.c: New test.
	* gcc.dg/pg.c: New test.
	* gcc.target/i386/fentry-override.c: New test.
	* gcc.target/i386/fentry.c: New test.

From-SVN: r215285

gcc/testsuite/ChangeLog

+2014-09-15  Andi Kleen  <ak@linux.intel.com>
+
+	* gcc.dg/pg-override.c: New test.
+	* gcc.dg/pg.c: New test.
+	* gcc.target/i386/fentry-override.c: New test.
+	* gcc.target/i386/fentry.c: New test.
+
 2014-09-15  Jakub Jelinek  <jakub@redhat.com>
 
 	PR fortran/56408

gcc/testsuite/gcc.dg/pg-override.c

+/* Test -fprofile override */
+/* { dg-do compile } */
+/* { dg-options "-fprofile" { target { { i686-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-not "mcount" } } */
+/* Origin: Andi Kleen */
+extern void foobar(const char *);
+
+__attribute__((no_instrument_function)) void func(void)
+{
+  foobar ("Hello world\n");
+}
+
+__attribute__((no_instrument_function)) void func2(void)
+{
+  int i;
+  for (i = 0; i < 10; i++)
+    foobar ("Hello world");
+}

gcc/testsuite/gcc.dg/pg.c

+/* Test -fprofile override */
+/* { dg-do compile } */
+/* { dg-options "-fprofile" { target { { i686-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-not "mcount" } } */
+/* Origin: Andi Kleen */
+extern void foobar(const char *);
+
+__attribute__((no_instrument_function)) void func(void)
+{
+  foobar ("Hello world\n");
+}
+
+__attribute__((no_instrument_function)) void func2(void)
+{
+  int i;
+  for (i = 0; i < 10; i++)
+    foobar ("Hello world");
+}

gcc/testsuite/gcc.target/i386/fentry-override.c

+/* Test -mfentry override */
+/* { dg-do compile } */
+/* { dg-options "-mfentry" } */
+/* { dg-final { scan-assembler-not "__fentry__" } } */
+/* Origin: Andi Kleen */
+extern void foobar(const char *);
+
+void __attribute__((no_instrument_function)) func(void)
+{
+  foobar ("Hello world\n");
+}
+
+void __attribute__((no_instrument_function)) func2(void)
+{
+  int i;
+  for (i = 0; i < 10; i++)
+    foobar ("Hello world");
+}

gcc/testsuite/gcc.target/i386/fentry.c

+/* Test -mfentry */
+/* { dg-do compile } */
+/* { dg-options "-fprofile -mfentry" } */
+/* { dg-final { scan-assembler "__fentry__" } } */
+/* Origin: Andi Kleen */
+extern void foobar(const char *);
+
+void func(void)
+{
+  foobar ("Hello world\n");
+}
+
+void func2(void)
+{
+  int i;
+  for (i = 0; i < 10; i++)
+    foobar ("Hello world");
+}