testsuite/arm: Factorize and increase coverage in mve-sub_1.c

Use a template macro to factorize the existing test functions.

This patch also adds a version to check subtraction with __fp16 type.

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

	gcc/testsuite/
	* gcc.target/arm/simd/mve-vsub_1.c: Factorize and add __fp16 test.

1 files changed, 21 insertions, 39 deletions

diff --git a/gcc/testsuite/gcc.target/arm/simd/mve-vsub_1.c b/gcc/testsuite/gcc.target/arm/simd/mve-vsub_1.c
index 842e5c6..5a6c345 100644
--- a/gcc/testsuite/gcc.target/arm/simd/mve-vsub_1.c
+++ b/gcc/testsuite/gcc.target/arm/simd/mve-vsub_1.c
@@ -5,60 +5,42 @@
 
 #include <stdint.h>
 
-void test_vsub_i32 (int32_t * dest, int32_t * a, int32_t * b) {
-  int i;
-  for (i=0; i<4; i++) {
-    dest[i] = a[i] - b[i];
-  }
+#define FUNC(SIGN, TYPE, BITS, NB, OP, NAME)				\
+  void test_ ## NAME ##_ ## SIGN ## BITS ## x ## NB (TYPE##BITS##_t * __restrict__ dest, \
+						     TYPE##BITS##_t *a, TYPE##BITS##_t *b) { \
+    int i;								\
+    for (i=0; i<NB; i++) {						\
+      dest[i] = a[i] OP b[i];						\
+    }									\
 }
 
-void test_vsub_i32_u (uint32_t * dest, uint32_t * a, uint32_t * b) {
-  int i;
-  for (i=0; i<4; i++) {
-    dest[i] = a[i] - b[i];
-  }
-}
+/* 128-bit vectors.  */
+FUNC(s, int, 32, 4, -, vsub)
+FUNC(u, uint, 32, 4, -, vsub)
+FUNC(s, int, 16, 8, -, vsub)
+FUNC(u, uint, 16, 8, -, vsub)
+FUNC(s, int, 8, 16, -, vsub)
+FUNC(u, uint, 8, 16, -, vsub)
 
 /* { dg-final { scan-assembler-times {vsub\.i32\tq[0-9]+, q[0-9]+, q[0-9]+} 2 } } */
-
-void test_vsub_i16 (int16_t * dest, int16_t * a, int16_t * b) {
-  int i;
-  for (i=0; i<8; i++) {
-    dest[i] = a[i] - b[i];
-  }
-}
-
-void test_vsub_i16_u (uint16_t * dest, uint16_t * a, uint16_t * b) {
-  int i;
-  for (i=0; i<8; i++) {
-    dest[i] = a[i] - b[i];
-  }
-}
-
 /* { dg-final { scan-assembler-times {vsub\.i16\tq[0-9]+, q[0-9]+, q[0-9]+} 2 } } */
+/* { dg-final { scan-assembler-times {vsub\.i8\tq[0-9]+, q[0-9]+, q[0-9]+} 2 } } */
 
-void test_vsub_i8 (int8_t * dest, int8_t * a, int8_t * b) {
-  int i;
-  for (i=0; i<16; i++) {
-    dest[i] = a[i] - b[i];
-  }
-}
-
-void test_vsub_i8_u (uint8_t * dest, uint8_t * a, uint8_t * b) {
+void test_vsub_f32 (float * dest, float * a, float * b) {
   int i;
-  for (i=0; i<16; i++) {
+  for (i=0; i<4; i++) {
     dest[i] = a[i] - b[i];
   }
 }
+/* { dg-final { scan-assembler-times {vsub\.f32\tq[0-9]+, q[0-9]+, q[0-9]+} 1 } } */
 
-/* { dg-final { scan-assembler-times {vsub\.i8\tq[0-9]+, q[0-9]+, q[0-9]+} 2 } } */
 
-void test_vsub_f32 (float * dest, float * a, float * b) {
+void test_vsub_f16 (__fp16 * dest, __fp16 * a, __fp16 * b) {
   int i;
-  for (i=0; i<4; i++) {
+  for (i=0; i<8; i++) {
     dest[i] = a[i] - b[i];
   }
 }
 
-/* { dg-final { scan-assembler-times {vsub\.f32\tq[0-9]+, q[0-9]+, q[0-9]+} 1 } } */
+/* { dg-final { scan-assembler-times {vsub\.f16\tq[0-9]+, q[0-9]+, q[0-9]+} 1 } } */