Fix mcount test cases to only run on supported targets

       * gcc.dg/pg-override.c: Only run on x86 Linux.
       * gcc.dg/pg.c: Dito.
       * gcc.target/i386/fentry-override.c: Exclude for PIC.
       * gcc.target/i386/fentry.c: Dito.

From-SVN: r215401

gcc/testsuite/ChangeLog

+2014-09-19  Andi Kleen  <ak@linux.intel.com>
+
+	* gcc.dg/pg-override.c: Only run on x86 Linux.
+	* gcc.dg/pg.c: Dito.
+	* gcc.target/i386/fentry-override.c: Exclude for PIC.
+	* gcc.target/i386/fentry.c: Dito.
+
 2014-09-19  Markus Trippelsdorf  <markus@trippelsdorf.de>
 
 	PR ipa/61998

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

 /* Test -fprofile override */
 /* { dg-do compile } */
-/* { dg-options "-fprofile" { target i?86-*-* x86_64-*-* } } */
+/* { dg-options "-fprofile" { target i?86-*-linux* x86_64-*-linux* } } */
 /* { dg-final { scan-assembler-not "mcount" } } */
 /* Origin: Andi Kleen */
 extern void foobar(const char *);

gcc/testsuite/gcc.dg/pg.c

 /* Test -fprofile override */
 /* { dg-do compile } */
-/* { dg-options "-fprofile" { target i?86-*-* x86_64-*-* } } */
+/* { dg-options "-fprofile" { target i?86-*-linux* x86_64-*-linux* } } */
 /* { dg-final { scan-assembler-not "mcount" } } */
 /* Origin: Andi Kleen */
 extern void foobar(const char *);

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

 /* Test -mfentry override */
-/* { dg-do compile } */
+/* { dg-do compile { target { *-*-linux* } && { nonpic || ! { ia32 } } } } */
 /* { dg-options "-mfentry" } */
 /* { dg-final { scan-assembler-not "__fentry__" } } */
 /* Origin: Andi Kleen */

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

 /* Test -mfentry */
-/* { dg-do compile } */
+/* { dg-do compile { target { *-*-linux* } && { nonpic || ! { ia32 } } } } */
 /* { dg-options "-fprofile -mfentry" } */
 /* { dg-final { scan-assembler "__fentry__" } } */
 /* Origin: Andi Kleen */