Define TRY_EMPTY_VM_SPACE to 0x60000000 for x32

2012-04-11  H.J. Lu  <hongjiu.lu@intel.com>

	* config/host-linux.c (TRY_EMPTY_VM_SPACE): Defined to
	0x60000000 if __x86_64 is defined and __LP64__ isn't defined.

From-SVN: r186352

gcc/ChangeLog

 2012-04-11  H.J. Lu  <hongjiu.lu@intel.com>
 
+	* config/host-linux.c (TRY_EMPTY_VM_SPACE): Defined to
+	0x60000000 if __x86_64 is defined and __LP64__ isn't defined.
+
+2012-04-11  H.J. Lu  <hongjiu.lu@intel.com>
+
 	PR rtl-optimization/52876
 	* emit-rtl.c (set_reg_attrs_from_value): Handle arbitrary value.
 	Don't call mark_reg_pointer for incompatible pointer sign

gcc/config/host-linux.c

@@ -68,8 +68,10 @@
 # define TRY_EMPTY_VM_SPACE	0x10000000000
 #elif defined(__ia64)
 # define TRY_EMPTY_VM_SPACE	0x2000000100000000
-#elif defined(__x86_64)
+#elif defined(__x86_64) && defined(__LP64__)
 # define TRY_EMPTY_VM_SPACE	0x1000000000
+#elif defined(__x86_64)
+# define TRY_EMPTY_VM_SPACE	0x60000000
 #elif defined(__i386)
 # define TRY_EMPTY_VM_SPACE	0x60000000
 #elif defined(__powerpc__)