re PR testsuite/82847 (gcc.dg/vect/slp-perm-9.c fail)

2018-03-27  Richard Biener  <rguenther@suse.de>

	PR testsuite/82847
	* lib/target-supports.exp (check_ssse3_available): New function.
	(check_effective_target_vect_perm_short): Enable for x86 if
	check_ssse3_available.

From-SVN: r258882

gcc/testsuite/ChangeLog

 2018-03-27  Richard Biener  <rguenther@suse.de>
 
+	PR testsuite/82847
+	* lib/target-supports.exp (check_ssse3_available): New function.
+	(check_effective_target_vect_perm_short): Enable for x86 if
+	check_ssse3_available.
+
+2018-03-27  Richard Biener  <rguenther@suse.de>
+
 	PR tree-optimization/85082
 	* gfortran.dg/pr85082.f90: New testcase.
 

gcc/testsuite/lib/target-supports.exp

@@ -5828,6 +5828,8 @@ proc check_effective_target_vect_perm_short { } {
 		 && ![check_effective_target_vect_variable_length])
 	     || [istarget powerpc*-*-*]
 	     || [istarget spu-*-*]
+	     || (([istarget i?86-*-*] || [istarget x86_64-*-*]
+	         && [check_ssse3_available]))
 	     || ([istarget mips*-*-*]
 		  && [et-is-effective-target mips_msa])
 	     || ([istarget s390*-*-*]
@@ -8017,6 +8019,19 @@ proc check_avx_available { } {
   return 0;
 }
 
+# Return true if we are compiling for SSSE3 target.
+
+proc check_ssse3_available { } {
+  if { [check_no_compiler_messages sse3a_available assembly {
+    #ifndef __SSSE3__
+    #error unsupported
+    #endif
+  } ""] } {
+    return 1;
+  }
+  return 0;
+}
+
 # Return true if 32- and 16-bytes vectors are available.
 
 proc check_effective_target_vect_sizes_32B_16B { } {