testsuite/arm: Add mve-vadd-scalar-1.c test

This patch adds a test for the scalar mode of vadd, precisely noting
that we do not yet use the T2 variants of vadd, which take a scalar as
final argument.

2021-05-17  Christophe Lyon  <christophe.lyon@linaro.org>

	gcc/testsuite/
	* gcc.target/arm/simd/mve-vadd-scalar-1.c: New.

1 files changed, 47 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/arm/simd/mve-vadd-scalar-1.c b/gcc/testsuite/gcc.target/arm/simd/mve-vadd-scalar-1.c
new file mode 100644
index 0000000..bbf70e1
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/simd/mve-vadd-scalar-1.c
@@ -0,0 +1,47 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target arm_v8_1m_mve_fp_ok } */
+/* { dg-add-options arm_v8_1m_mve_fp } */
+/* { dg-additional-options "-O3" } */
+
+#include <stdint.h>
+
+#define FUNC_IMM(SIGN, TYPE, BITS, NB, OP, NAME)			\
+  void test_ ## NAME ##_ ## SIGN ## BITS ## x ## NB (TYPE##BITS##_t * __restrict__ dest, \
+						     TYPE##BITS##_t *a) { \
+    int i;								\
+    for (i=0; i<NB; i++) {						\
+      dest[i] = a[i] OP 1;						\
+    }									\
+}
+
+/* 128-bit vectors.  */
+FUNC_IMM(s, int, 32, 4, +, vaddimm)
+FUNC_IMM(u, uint, 32, 4, +, vaddimm)
+FUNC_IMM(s, int, 16, 8, +, vaddimm)
+FUNC_IMM(u, uint, 16, 8, +, vaddimm)
+FUNC_IMM(s, int, 8, 16, +, vaddimm)
+FUNC_IMM(u, uint, 8, 16, +, vaddimm)
+
+/* For the moment we do not select the T2 vadd variant operating on a scalar
+   final argument.  */
+/* { dg-final { scan-assembler-times {vadd\.i32  q[0-9]+, q[0-9]+, r[0-9]+} 2 { xfail *-*-* } } } */
+/* { dg-final { scan-assembler-times {vadd\.i16  q[0-9]+, q[0-9]+, r[0-9]+} 2 { xfail *-*-* } } } */
+/* { dg-final { scan-assembler-times {vadd\.i8  q[0-9]+, q[0-9]+, r[0-9]+} 2 { xfail *-*-* } } } */
+
+void test_vaddimm_f32 (float * dest, float * a) {
+  int i;
+  for (i=0; i<4; i++) {
+    dest[i] = a[i] + 5.0;
+  }
+}
+/* { dg-final { scan-assembler-times {vadd\.f32 q[0-9]+, q[0-9]+, r[0-9]+} 1 { xfail *-*-* } } } */
+
+/* Note that dest[i] = a[i] + 5.0f16 is not vectorized.  */
+void test_vaddimm_f16 (__fp16 * dest, __fp16 * a) {
+  int i;
+  __fp16 b = 5.0f16;
+  for (i=0; i<8; i++) {
+    dest[i] = a[i] + b;
+  }
+}
+/* { dg-final { scan-assembler-times {vadd\.f16 q[0-9]+, q[0-9]+, r[0-9]+} 1 { xfail *-*-* } } } */