pr32000-2.c: Use dg-skip-if for target expression.

	* gcc.target/i386/pr32000-2.c: Use dg-skip-if for target expression.
	* gcc.target/i386/stackalign/return-3.c: Ditto.
	* gcc.target/sparc/ultrasp3.c: Ditto.
	* lib/target-supports-dg.exp (dg-require-effective-target): Error
	if argument is not a single effective-target keyword.

From-SVN: r139039

gcc/testsuite/ChangeLog

 2008-08-12  Janis Johnson  <janis187@us.ibm.com>
 
+	* gcc.target/i386/pr32000-2.c: Use dg-skip-if for target expression.
+	* gcc.target/i386/stackalign/return-3.c: Ditto.
+	* gcc.target/sparc/ultrasp3.c: Ditto.
+	* lib/target-supports-dg.exp (dg-require-effective-target): Error
+	if argument is not a single effective-target keyword.
+
 	PR testsuite/36087
 	* gcc.dg/var-expand3.c: Fix name of dump file.
 

gcc/testsuite/gcc.target/i386/pr32000-2.c

 /* { dg-do run } */
-/* { dg-require-effective-target ilp32 && dfp } */
+/* { dg-skip-if "" { ! { ilp32 && dfp } } } */
 /* { dg-options "-O -msse2 -std=gnu99 -mpreferred-stack-boundary=2" } */
 
 #include "sse2-check.h"

gcc/testsuite/gcc.target/i386/stackalign/return-3.c

 /* { dg-do compile } */
-/* { dg-require-effective-target ilp32 && dfp } */
+/* { dg-skip-if "" { ! { ilp32 && dfp } } } */
 /* { dg-options "-msse -std=gnu99 -mpreferred-stack-boundary=2" } */
 
 /* This compile only test is to detect an assertion failure in stack branch

gcc/testsuite/gcc.target/sparc/ultrasp3.c

 /* { dg-do run } */
-/* { dg-require-effective-target ilp32 && ultrasparc_hw } */
+/* { dg-skip-if "" { ! { ilp32 && ultrasparc_hw } } } */
 /* { dg-options "-mcpu=ultrasparc -mv8plus" } */
 
 extern void abort (void);

gcc/testsuite/lib/target-supports-dg.exp

@@ -117,6 +117,9 @@ proc dg-require-named-sections { args } {
 
 proc dg-require-effective-target { args } {
     set args [lreplace $args 0 0]
+    if { [llength $args] != 1 } {
+	error "syntax error, need a single effective-target keyword"
+    }
     if { ![is-effective-target [lindex $args 0]] } {
 	upvar dg-do-what dg-do-what
         set dg-do-what [list [lindex ${dg-do-what} 0] "N" "P"]