arm: vst1q_types_x2 ACLE intrinsics

This patch is part of a series of patches implementing the _xN
variants of the vst1q intrinsic for the arm port. This patch adds the
_x2 variants of the vst1q intrinsic.

ACLE documents:
https://developer.arm.com/documentation/ihi0053/latest/

ISA documents:
https://developer.arm.com/documentation/ddi0487/latest/

gcc/ChangeLog:
	* config/arm/arm_neon.h
	(vst1q_u8_x2, vst1q_u16_x2, vst1q_u32_x2, vst1q_u64_x2): New.
	(vst1q_s8_x2, vst1q_s16_x2, vst1q_s32_x2, vst1q_s64_x2): New.
	(vst1q_f16_x2, vst1q_f32_x2): New.
	(vst1q_p8_x2, vst1q_p16_x2, vst1q_p64_x2): New.
	(vst1q_bf16_x2): New.
	* config/arm/arm_neon_builtins.def (vst1q_x2): New entries.
	* config/arm/neon.md
	(neon_vst1<VMEMX2_q>_x2<VDQX:mode>): Updated from
	neon_vst1_x2<mode>.
	* config/arm/iterators.md (VMEMX2): New mode iterator.
	(VMEMX2_q): New mode attribute.

gcc/testsuite/ChangeLog:
	* gcc.target/arm/simd/vst1q_base_xN_1.c: Add new tests.
	* gcc.target/arm/simd/vst1q_bf16_xN_1.c: Add new tests.
	* gcc.target/arm/simd/vst1q_fp16_xN_1.c: Add new tests.
	* gcc.target/arm/simd/vst1q_p64_xN_1.c: Add new tests.

4 files changed, 108 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/arm/simd/vst1q_base_xN_1.c b/gcc/testsuite/gcc.target/arm/simd/vst1q_base_xN_1.c
new file mode 100644
index 0000000..4a17a80
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/simd/vst1q_base_xN_1.c
@@ -0,0 +1,69 @@
+/* { dg-do assemble } */
+/* { dg-require-effective-target arm_neon_ok } */
+/* { dg-options "-save-temps -O2" } */
+/* { dg-add-options arm_neon } */
+
+#include "arm_neon.h"
+
+void test_vst1q_u8_x2 (uint8_t * ptr, uint8x16x2_t val)
+{
+    vst1q_u8_x2 (ptr, val);
+}
+
+void test_vst1q_u16_x2 (uint16_t * ptr, uint16x8x2_t val)
+{
+    vst1q_u16_x2 (ptr, val);
+}
+
+void test_vst1q_u32_x2 (uint32_t * ptr, uint32x4x2_t val)
+{
+    vst1q_u32_x2 (ptr, val);
+}
+
+void test_vst1q_u64_x2 (uint64_t * ptr, uint64x2x2_t val)
+{
+    vst1q_u64_x2 (ptr, val);
+}
+
+void test_vst1q_s8_x2 (int8_t * ptr, int8x16x2_t val)
+{
+    vst1q_s8_x2 (ptr, val);
+}
+
+void test_vst1q_s16_x2 (int16_t * ptr, int16x8x2_t val)
+{
+    vst1q_s16_x2 (ptr, val);
+}
+
+void test_vst1q_s32_x2 (int32_t * ptr, int32x4x2_t val)
+{
+    vst1q_s32_x2 (ptr, val);
+}
+
+void test_vst1q_s64_x2 (int64_t * ptr, int64x2x2_t val)
+{
+    vst1q_s64_x2 (ptr, val);
+}
+
+void test_vst1q_f32_x2 (float32_t * ptr, float32x4x2_t val)
+{
+    vst1q_f32_x2 (ptr, val);
+}
+
+void test_vst1q_p8_x2 (poly8_t * ptr, poly8x16x2_t val)
+{
+    vst1q_p8_x2 (ptr, val);
+}
+
+void test_vst1q_p16_x2 (poly16_t * ptr, poly16x8x2_t val)
+{
+    vst1q_p16_x2 (ptr, val);
+}
+
+/* { dg-final { scan-assembler-times {vst1.8\t\{d[0-9]+-d[0-9]+\}, \[r[0-9]+\]\n} 3 } }  */
+
+/* { dg-final { scan-assembler-times {vst1.16\t\{d[0-9]+-d[0-9]+\}, \[r[0-9]+\]\n} 3 } }  */
+
+/* { dg-final { scan-assembler-times {vst1.32\t\{d[0-9]+-d[0-9]+\}, \[r[0-9]+\]\n} 3 } }  */
+
+/* { dg-final { scan-assembler-times {vst1.64\t\{d[0-9]+-d[0-9]+\}, \[r[0-9]+:64\]\n} 2 } }  */
diff --git a/gcc/testsuite/gcc.target/arm/simd/vst1q_bf16_xN_1.c b/gcc/testsuite/gcc.target/arm/simd/vst1q_bf16_xN_1.c
new file mode 100644
index 0000000..2a4579f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/simd/vst1q_bf16_xN_1.c
@@ -0,0 +1,13 @@
+/* { dg-do assemble } */
+/* { dg-require-effective-target arm_v8_2a_bf16_neon_ok } */
+/* { dg-options "-save-temps -O2" } */
+/* { dg-add-options arm_v8_2a_bf16_neon } */
+
+#include "arm_neon.h"
+
+void test_vst1q_bf16_x2 (bfloat16_t * ptr, bfloat16x8x2_t val)
+{
+    vst1q_bf16_x2 (ptr, val);
+}
+
+/* { dg-final { scan-assembler-times {vst1.16\t\{d[0-9]+-d[0-9]+\}, \[r[0-9]+\]\n} 1 } }  */
diff --git a/gcc/testsuite/gcc.target/arm/simd/vst1q_fp16_xN_1.c b/gcc/testsuite/gcc.target/arm/simd/vst1q_fp16_xN_1.c
new file mode 100644
index 0000000..61a7e55
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/simd/vst1q_fp16_xN_1.c
@@ -0,0 +1,13 @@
+/* { dg-do assemble } */
+/* { dg-require-effective-target arm_neon_fp16_ok } */
+/* { dg-options "-save-temps -O2" } */
+/* { dg-add-options arm_neon_fp16 } */
+
+#include "arm_neon.h"
+
+void test_vst1q_f16_x2 (float16_t * ptr, float16x8x2_t val)
+{
+    vst1q_f16_x2 (ptr, val);
+}
+
+/* { dg-final { scan-assembler-times {vst1.16\t\{d[0-9]+-d[0-9]+\}, \[r[0-9]+\]\n} 1 } }  */
diff --git a/gcc/testsuite/gcc.target/arm/simd/vst1q_p64_xN_1.c b/gcc/testsuite/gcc.target/arm/simd/vst1q_p64_xN_1.c
new file mode 100644
index 0000000..82f3dad
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/simd/vst1q_p64_xN_1.c
@@ -0,0 +1,13 @@
+/* { dg-do assemble } */
+/* { dg-require-effective-target arm_crypto_ok } */
+/* { dg-options "-save-temps -O2" } */
+/* { dg-add-options arm_crypto } */
+
+#include "arm_neon.h"
+
+void test_vst1q_p64_x2 (poly64_t * ptr, poly64x2x2_t val)
+{
+    vst1q_p64_x2 (ptr, val);
+}
+
+/* { dg-final { scan-assembler-times {vst1.64\t\{d[0-9]+-d[0-9]+\}, \[r[0-9]+:64\]\n} 1 } }  */