target-supports.exp (check_effective_target_spu_auto_overlay): New procedure.

	* lib/target-supports.exp (check_effective_target_spu_auto_overlay):
	New procedure.
	* lib/compat.exp (compat-execute): Use it to test whether toolchain
	supports automatic overlay generation for the SPU.

From-SVN: r138064

gcc/testsuite/ChangeLog

+2008-07-22  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
+
+	* lib/target-supports.exp (check_effective_target_spu_auto_overlay):
+	New procedure.
+	* lib/compat.exp (compat-execute): Use it to test whether toolchain
+	supports automatic overlay generation for the SPU.
+
 2008-07-22  Daniel Kraft  <d@domob.eu>
 
 	PR fortran/29835

gcc/testsuite/lib/compat.exp

@@ -280,7 +280,7 @@ proc compat-execute { src1 sid use_alt } {
 
     # On the SPU, most of the compat test cases exceed local store size.
     # Use automatic overlay support to make them fit.
-    if { [istarget spu-*-elf*] } {
+    if { [check_effective_target_spu_auto_overlay] } {
 	set extra_flags_1 "$extra_flags_1 -Wl,--auto-overlay"
 	set extra_flags_1 "$extra_flags_1 -ffunction-sections"
 	set extra_flags_2 "$extra_flags_2 -ffunction-sections"

gcc/testsuite/lib/target-supports.exp

@@ -1390,6 +1390,19 @@ proc check_effective_target_powerpc_altivec { } {
     }
 }
 
+# Return 1 if this is a SPU target with a toolchain that
+# supports automatic overlay generation.
+
+proc check_effective_target_spu_auto_overlay { } {
+    if { [istarget spu*-*-elf*] } {
+	return [check_no_compiler_messages spu_auto_overlay executable {
+		int main (void) { }
+		} "-Wl,--auto-overlay" ]
+    } else {
+	return 0
+    }
+}
+
 # The VxWorks SPARC simulator accepts only EM_SPARC executables and
 # chokes on EM_SPARC32PLUS or EM_SPARCV9 executables.  Return 1 if the
 # test environment appears to run executables on such a simulator.