[AArch64][dejagnu] Dejagnu support for ARMv8.1 Adv.SIMD.

        gcc/testsuite
	* lib/target-supports.exp (add_options_for_arm_v8_1a_neon): New.
	(check_effective_target_arm_arch_FUNC_ok)
	(add_options_for_arm_arch_FUNC)
	(check_effective_target_arm_arch_FUNC_multilib): Add "armv8.1-a"
	to the list to be generated.
	(check_effective_target_arm_v8_1a_neon_ok_nocache): New.
	(check_effective_target_arm_v8_1a_neon_ok): New.
	(check_effective_target_arm_v8_1a_neon_hw): New.

From-SVN: r230970

gcc/testsuite/ChangeLog

+2015-11-26  Matthew Wahab  <matthew.wahab@arm.com>
+
+	* lib/target-supports.exp (add_options_for_arm_v8_1a_neon): New.
+	(check_effective_target_arm_arch_FUNC_ok)
+	(add_options_for_arm_arch_FUNC)
+	(check_effective_target_arm_arch_FUNC_multilib): Add "armv8.1-a"
+	to the list to be generated.
+	(check_effective_target_arm_v8_1a_neon_ok_nocache): New.
+	(check_effective_target_arm_v8_1a_neon_ok): New.
+	(check_effective_target_arm_v8_1a_neon_hw): New.
+
 2015-11-26  Nathan Sidwell  <nathan@acm.org>
 
 	* gcc.target/nvptx/proto-1.c: Adjust expected asm.

gcc/testsuite/lib/target-supports.exp

@@ -2816,6 +2816,16 @@ proc add_options_for_arm_v8_neon { flags } {
     return "$flags $et_arm_v8_neon_flags -march=armv8-a"
 }
 
+# Add the options needed for ARMv8.1 Adv.SIMD.
+
+proc add_options_for_arm_v8_1a_neon { flags } {
+    if { [istarget aarch64*-*-*] } {
+	return "$flags -march=armv8.1-a"
+    } else {
+	return "$flags"
+    }
+}
+
 proc add_options_for_arm_crc { flags } {
     if { ! [check_effective_target_arm_crc_ok] } {
         return "$flags"
@@ -3102,7 +3112,8 @@ foreach { armfunc armflag armdef } { v4 "-march=armv4 -marm" __ARM_ARCH_4__
 				     v7r "-march=armv7-r" __ARM_ARCH_7R__
 				     v7m "-march=armv7-m -mthumb" __ARM_ARCH_7M__
 				     v7em "-march=armv7e-m -mthumb" __ARM_ARCH_7EM__
-				     v8a "-march=armv8-a" __ARM_ARCH_8A__ } {
+				     v8a "-march=armv8-a" __ARM_ARCH_8A__
+				     v8_1a "-march=armv8.1a" __ARM_ARCH_8A__ } {
     eval [string map [list FUNC $armfunc FLAG $armflag DEF $armdef ] {
 	proc check_effective_target_arm_arch_FUNC_ok { } {
 	    if { [ string match "*-marm*" "FLAG" ] &&
@@ -3259,6 +3270,25 @@ proc check_effective_target_arm_neonv2_hw { } {
     } [add_options_for_arm_neonv2 ""]]
 }
 
+# Return 1 if the target supports the ARMv8.1 Adv.SIMD extension, 0
+# otherwise.  The test is valid for AArch64.
+
+proc check_effective_target_arm_v8_1a_neon_ok_nocache { } {
+    if { ![istarget aarch64*-*-*] } {
+	return 0
+    }
+    return [check_no_compiler_messages_nocache arm_v8_1a_neon_ok assembly {
+	#if !defined (__ARM_FEATURE_QRDMX)
+	#error "__ARM_FEATURE_QRDMX not defined"
+	#endif
+    } [add_options_for_arm_v8_1a_neon ""]]
+}
+
+proc check_effective_target_arm_v8_1a_neon_ok { } {
+    return [check_cached_effective_target arm_v8_1a_neon_ok \
+		check_effective_target_arm_v8_1a_neon_ok_nocache]
+}
+
 # Return 1 if the target supports executing ARMv8 NEON instructions, 0
 # otherwise.
 
@@ -3277,6 +3307,31 @@ proc check_effective_target_arm_v8_neon_hw { } {
     } [add_options_for_arm_v8_neon ""]]
 }
 
+# Return 1 if the target supports executing the ARMv8.1 Adv.SIMD extension, 0
+# otherwise.  The test is valid for AArch64.
+
+proc check_effective_target_arm_v8_1a_neon_hw { } {
+    if { ![check_effective_target_arm_v8_1a_neon_ok] } {
+	return 0;
+    }
+    return [check_runtime_nocache arm_v8_1a_neon_hw_available {
+	int
+	main (void)
+	{
+	  __Int32x2_t a = {0, 1};
+	  __Int32x2_t b = {0, 2};
+	  __Int32x2_t result;
+
+	  asm ("sqrdmlah %0.2s, %1.2s, %2.2s"
+	       : "=w"(result)
+	       : "w"(a), "w"(b)
+	       : /* No clobbers.  */);
+
+	  return result[0];
+	}
+    }  [add_options_for_arm_v8_1a_neon ""]]
+}
+
 # Return 1 if this is a ARM target with NEON enabled.
 
 proc check_effective_target_arm_neon { } {