target-supports.exp (check_effective_target_gas): New proc.

	gcc/testsuite:
	* lib/target-supports.exp (check_effective_target_gas): New proc.
	* gcc.c-torture/execute/960321-1.x: New file.

	gcc:
	* doc/sourcebuild.texi (Effective-Target Keywords, Other
	attributes): Document gas.

From-SVN: r160405

gcc/ChangeLog

+2010-06-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* doc/sourcebuild.texi (Effective-Target Keywords, Other
+	attributes): Document gas.
+
 2010-06-07  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.md (*add<mode>_1): Remove alternative 2.

gcc/doc/sourcebuild.texi

@@ -1734,6 +1734,9 @@ Target supports @option{-freorder-blocks-and-partition}.
 @item fstack_protector
 Target supports @option{-fstack-protector}.
 
+@item gas
+Target uses GNU @command{as}.
+
 @item gc_sections
 Target supports @option{--gc-sections}.
 

gcc/testsuite/ChangeLog

+2010-06-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* lib/target-supports.exp (check_effective_target_gas): New proc.
+	* gcc.c-torture/execute/960321-1.x: New file.
+
 2010-06-07  Jason Merrill  <jason@redhat.com>
 
 	PR c++/44401

gcc/testsuite/gcc.c-torture/execute/960321-1.x

+# This test fails to link on 64-bit Solaris 2/x86 due to a Sun as bug.
+if { [istarget "i?86-*-solaris2*"]
+     && ! [check_effective_target_ilp32]
+     && ! [check_effective_target_gas] } { 
+    set torture_eval_before_compile {
+        global compiler_conditional_xfail_data
+        set compiler_conditional_xfail_data {
+            "64-bit Sun as bug" \
+                { "i?86-*-solaris2*" } \
+                { "-O[1-3s]" } \
+                { "" }
+       }
+    }
+}
+return 0

gcc/testsuite/lib/target-supports.exp

@@ -3333,6 +3333,28 @@ proc check_effective_target_correct_iso_cpp_string_wchar_protos { } {
     }]
 }
 
+# Return 1 if GNU as is used.
+
+proc check_effective_target_gas { } {
+    global use_gas_saved
+    global tool
+
+    if {![info exists use_gas_saved]} {
+	# Check if the as used by gcc is GNU as.
+	set gcc_as [lindex [${tool}_target_compile "-print-prog-name=as" "" "none" ""] 0]
+	# Provide /dev/null as input, otherwise gas times out reading from
+	# stdin.
+	set status [remote_exec host "$gcc_as" "-v /dev/null"]
+	set as_output [lindex $status 1]
+	if { [ string first "GNU" $as_output ] >= 0 } {
+	    set use_gas_saved 1
+	} else {
+	    set use_gas_saved 0
+	}
+    }
+    return $use_gas_saved
+}
+
 # Return 1 if the compiler has been configure with link-time optimization
 # (LTO) support.