[PATCH] Do not set structural equality on polynomial types

gcc/ChangeLog:

	PR target/67896
	* config/aarch64/aarch64-builtins.c
	(aarch64_init_simd_builtin_types): Do not set structural
	equality to __Poly{8,16,64,128}_t types.

gcc/testsuite/ChangeLog:

	PR target/67896
	* gcc.target/aarch64/simd/pr67896.C: New.

From-SVN: r232818

gcc/ChangeLog

+2016-01-26  Roger Ferrer Ibáñez  <rofirrim@gmail.com>
+
+	PR target/67896
+	* config/aarch64/aarch64-builtins.c
+	(aarch64_init_simd_builtin_types): Do not set structural
+	equality to __Poly{8,16,64,128}_t types.
+
 2016-01-26  Richard Sandiford  <richard.sandiford@arm.com>
 
 	PR tree-optimization/69400

gcc/config/aarch64/aarch64-builtins.c

@@ -614,14 +614,16 @@ aarch64_init_simd_builtin_types (void)
       enum machine_mode mode = aarch64_simd_types[i].mode;
 
       if (aarch64_simd_types[i].itype == NULL)
-	aarch64_simd_types[i].itype =
-	  build_distinct_type_copy
-	    (build_vector_type (eltype, GET_MODE_NUNITS (mode)));
+	{
+	  aarch64_simd_types[i].itype
+	    = build_distinct_type_copy
+	      (build_vector_type (eltype, GET_MODE_NUNITS (mode)));
+	  SET_TYPE_STRUCTURAL_EQUALITY (aarch64_simd_types[i].itype);
+	}
 
       tdecl = add_builtin_type (aarch64_simd_types[i].name,
 				aarch64_simd_types[i].itype);
       TYPE_NAME (aarch64_simd_types[i].itype) = tdecl;
-      SET_TYPE_STRUCTURAL_EQUALITY (aarch64_simd_types[i].itype);
     }
 
 #define AARCH64_BUILD_SIGNED_TYPE(mode)  \

gcc/testsuite/ChangeLog

+2016-01-26  Roger Ferrer Ibáñez  <rofirrim@gmail.com>
+
+	PR target/67896
+	* gcc.target/aarch64/simd/pr67896.C: New.
+
 2016-01-26  Richard Sandiford  <richard.sandiford@arm.com>
 
 	PR tree-optimization/69400

gcc/testsuite/gcc.target/aarch64/simd/pr67896.C

+typedef __Poly8_t A;
+typedef __Poly16_t A; /* { dg-error "conflicting declaration" } */
+typedef __Poly64_t A; /* { dg-error "conflicting declaration" } */
+typedef __Poly128_t A; /* { dg-error "conflicting declaration" } */
+
+typedef __Poly8x8_t B;
+typedef __Poly16x8_t B; /* { dg-error "conflicting declaration" } */