[AArch64] PR target/65491: Classify V1TF vectors as AAPCS64 short vectors rather…

[AArch64] PR target/65491: Classify V1TF vectors as AAPCS64 short vectors rather than composite types

	PR target/65491
	* config/aarch64/aarch64.c (aarch64_short_vector_p): Move above
	aarch64_composite_type_p.  Remove check for aarch64_composite_type_p.
	(aarch64_composite_type_p): Return false if given type and mode are
	for a short vector.

	PR target/65491
	* gcc.target/aarch64/pr65491_1.c: New test.
	* gcc.target/aarch64/aapcs64/type-def.h (vlf1_t): New typedef.
	* gcc.target/aarch64/aapcs64/func-ret-1.c: Add test for vlf1_t.

From-SVN: r223577

gcc/ChangeLog

+2015-05-22  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	PR target/65491
+	* config/aarch64/aarch64.c (aarch64_short_vector_p): Move above
+	aarch64_composite_type_p.  Remove check for aarch64_composite_type_p.
+	(aarch64_composite_type_p): Return false if given type and mode are
+	for a short vector.
+
 2015-05-22  Richard Biener  <rguenther@suse.de>
 
 	* tree-vectorizer.h (struct _slp_oprnd_info): Add second_pattern

gcc/config/aarch64/aarch64.c

@@ -8156,6 +8156,26 @@ aapcs_vfp_sub_candidate (const_tree type, machine_mode *modep)
   return -1;
 }
 
+/* Return TRUE if the type, as described by TYPE and MODE, is a short vector
+   type as described in AAPCS64 \S 4.1.2.
+
+   See the comment above aarch64_composite_type_p for the notes on MODE.  */
+
+static bool
+aarch64_short_vector_p (const_tree type,
+			machine_mode mode)
+{
+  HOST_WIDE_INT size = -1;
+
+  if (type && TREE_CODE (type) == VECTOR_TYPE)
+    size = int_size_in_bytes (type);
+  else if (GET_MODE_CLASS (mode) == MODE_VECTOR_INT
+	    || GET_MODE_CLASS (mode) == MODE_VECTOR_FLOAT)
+    size = GET_MODE_SIZE (mode);
+
+  return (size == 8 || size == 16);
+}
+
 /* Return TRUE if the type, as described by TYPE and MODE, is a composite
    type as described in AAPCS64 \S 4.3.  This includes aggregate, union and
    array types.  The C99 floating-point complex types are also considered
@@ -8177,6 +8197,9 @@ static bool
 aarch64_composite_type_p (const_tree type,
 			  machine_mode mode)
 {
+  if (aarch64_short_vector_p (type, mode))
+    return false;
+
   if (type && (AGGREGATE_TYPE_P (type) || TREE_CODE (type) == COMPLEX_TYPE))
     return true;
 
@@ -8188,27 +8211,6 @@ aarch64_composite_type_p (const_tree type,
   return false;
 }
 
-/* Return TRUE if the type, as described by TYPE and MODE, is a short vector
-   type as described in AAPCS64 \S 4.1.2.
-
-   See the comment above aarch64_composite_type_p for the notes on MODE.  */
-
-static bool
-aarch64_short_vector_p (const_tree type,
-			machine_mode mode)
-{
-  HOST_WIDE_INT size = -1;
-
-  if (type && TREE_CODE (type) == VECTOR_TYPE)
-    size = int_size_in_bytes (type);
-  else if (!aarch64_composite_type_p (type, mode)
-	   && (GET_MODE_CLASS (mode) == MODE_VECTOR_INT
-	       || GET_MODE_CLASS (mode) == MODE_VECTOR_FLOAT))
-    size = GET_MODE_SIZE (mode);
-
-  return (size == 8 || size == 16) ? true : false;
-}
-
 /* Return TRUE if an argument, whose type is described by TYPE and MODE,
    shall be passed or returned in simd/fp register(s) (providing these
    parameter passing registers are available).

gcc/testsuite/ChangeLog

+2015-05-22  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	PR target/65491
+	* gcc.target/aarch64/pr65491_1.c: New test.
+	* gcc.target/aarch64/aapcs64/type-def.h (vlf1_t): New typedef.
+	* gcc.target/aarch64/aapcs64/func-ret-1.c: Add test for vlf1_t.
+
 2015-05-22  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/65598

gcc/testsuite/gcc.target/aarch64/aapcs64/func-ret-1.c

@@ -12,6 +12,8 @@
 
 vf2_t vf2 = (vf2_t){ 17.f, 18.f };
 vi4_t vi4 = (vi4_t){ 0xdeadbabe, 0xbabecafe, 0xcafebeef, 0xbeefdead };
+vlf1_t vlf1 = (vlf1_t) { 17.0 };
+
 union int128_t qword;
 
 int *int_ptr = (int *)0xabcdef0123456789ULL;
@@ -41,4 +43,5 @@ FUNC_VAL_CHECK (11,   long double, 98765432123456789.987654321L, Q0, flat)
 FUNC_VAL_CHECK (12,         vf2_t,        vf2, D0, f32in64)
 FUNC_VAL_CHECK (13,         vi4_t,        vi4, Q0, i32in128)
 FUNC_VAL_CHECK (14,         int *,    int_ptr, X0, flat)
+FUNC_VAL_CHECK (15,         vlf1_t,    vlf1, Q0, flat)
 #endif

gcc/testsuite/gcc.target/aarch64/aapcs64/type-def.h

@@ -10,6 +10,9 @@ typedef float vf4_t __attribute__((vector_size (16)));
 /* 128-bit vector of 4 ints.  */
 typedef int vi4_t __attribute__((vector_size (16)));
 
+/* 128-bit vector of 1 quad precision float.  */
+typedef long double vlf1_t __attribute__((vector_size (16)));
+
 /* signed quad-word (in an union for the convenience of initialization).  */
 union int128_t
 {

gcc/testsuite/gcc.target/aarch64/pr65491_1.c

+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+typedef long double a __attribute__((vector_size (16)));
+
+a
+sum (a first, a second)
+{
+  return first + second;
+}
+