Add check_effective_target_maybe_x32

* lib/target-supports.exp (check_effective_target_maybe_x32): New
	proc.
	* gcc.target/i386/pr54457.c: Use dg-require-effective-target
	maybe_x32.
	* gcc.target/i386/pr53249.c: Likewise.

Co-Authored-By: Jack Howarth <howarth@bromo.med.uc.edu>

From-SVN: r193126

gcc/testsuite/ChangeLog

@@ -1,3 +1,12 @@
+2012-11-03  H.J. Lu  <hjl.tools@gmail.com>
+	    Jack Howarth  <howarth@bromo.med.uc.edu>
+
+	* lib/target-supports.exp (check_effective_target_maybe_x32): New
+	proc.
+	* gcc.target/i386/pr54457.c: Use dg-require-effective-target
+	maybe_x32.
+	* gcc.target/i386/pr53249.c: Likewise.
+
 2012-11-03  Andrew Pinski  <apinski@cavium.com>
 
 	 * gcc.target/mips/octeon-bbit-3.c: Change the second call to abort to

gcc/testsuite/gcc.target/i386/pr53249.c

@@ -1,4 +1,5 @@
 /* { dg-do compile { target { ! { ia32 } } } } */
+/* { dg-require-effective-target maybe_x32 } */
 /* { dg-options "-O2 -mx32 -ftls-model=initial-exec -maddress-mode=short" } */
 
 struct gomp_task

gcc/testsuite/gcc.target/i386/pr54457.c

@@ -1,4 +1,5 @@
 /* { dg-do compile { target { ! { ia32 } } } } */
+/* { dg-require-effective-target maybe_x32 } */
 /* { dg-options "-O2 -mx32 -maddress-mode=short" } */
 
 extern char array[40];

gcc/testsuite/lib/target-supports.exp

@@ -4608,6 +4608,14 @@ proc check_effective_target_lto { } {
     return [info exists ENABLE_LTO]
 }
 
+# Return 1 if -mx32 -maddress-mode=short can compile, 0 otherwise.
+
+proc check_effective_target_maybe_x32 { } {
+    return [check_no_compiler_messages maybe_x32 object {
+        void foo (void) {}
+    } "-mx32 -maddress-mode=short"]
+}
+
 # Return 1 if this target supports the -fsplit-stack option, 0
 # otherwise.