target-supports.exp (check_effective_target_bswap16): Do not skip on alpha and x86 targets.

	* lib/target-supports.exp (check_effective_target_bswap16):
	Do not skip on alpha and x86 targets.

From-SVN: r255063

gcc/testsuite/ChangeLog

+2017-11-22  Uros Bizjak  <ubizjak@gmail.com>
+
+	* lib/target-supports.exp (check_effective_target_bswap16):
+	Do not skip on alpha and x86 targets.
+
 2017-11-22  Sudakshina Das  <sudi.das@arm.com>
 
 	* gcc.target/arm/armv8_2-fp16-move-1.c: Add -mfloat-abi=hard option.

gcc/testsuite/lib/target-supports.exp

@@ -7252,9 +7252,7 @@ proc check_effective_target_bswap16 { } {
 	verbose "check_effective_target_bswap16: using cached result" 2
     } else {
 	set et_bswap16_saved 0
-	if { [is-effective-target bswap]
-	     && ![istarget alpha*-*-*]
-	     && !([istarget i?86-*-*] || [istarget x86_64-*-*]) } {
+	if { [is-effective-target bswap] } {
 	   set et_bswap16_saved 1
 	}
     }