[PATCH V2] RISC-V: Add ZVFHMIN block autovec testcase

[juzhe.zhong@rivai.ai]

From: Juzhe-Zhong <juzhe.zhong@rivai.ai>

To be safe, add ZVFHMIN autovec block testcase to make sure
we won't enable autovec in ZVFHMIN by mistakes.

gcc/testsuite/ChangeLog:

        * gcc.target/riscv/rvv/autovec/zvfhmin-1.c: New test.

---
 .../gcc.target/riscv/rvv/autovec/zvfhmin-1.c  | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/zvfhmin-1.c

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/zvfhmin-1.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/zvfhmin-1.c
new file mode 100644
index 00000000000..08da48d0270
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/zvfhmin-1.c
@@ -0,0 +1,35 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv32gcv_zvfhmin -mabi=ilp32d --param riscv-autovec-preference=scalable -fdump-tree-vect-details" } */
+
+void f0 (_Float16 * __restrict a, _Float16 * __restrict b, int n)
+{
+  for (int i = 0; i < n; i++)
+    a[i] = -b[i];
+}
+
+void f1 (_Float16 * __restrict a, _Float16 * __restrict b, int n)
+{
+  for (int i = 0; i < n; i++)
+    a[i] = a[i]+b[i];
+}
+
+void f2 (_Float16 * __restrict a, _Float16 * __restrict b, int n)
+{
+  for (int i = 0; i < n; i++)
+    a[i] = a[i]-b[i];
+}
+
+void f3 (_Float16 * __restrict a, _Float16 * __restrict b, int n)
+{
+  for (int i = 0; i < n; i++)
+    a[i] = a[i]*b[i];
+}
+
+void f4 (_Float16 * __restrict a, _Float16 * __restrict b, int n)
+{
+  for (int i = 0; i < n; i++)
+    a[i] = a[i]/b[i];
+}
+
+/* We can't enable FP16 NEG/PLUS/MINUS/MULT/DIV auto-vectorization when -march="*zvfhmin*".  */
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops in function" 0 "vect" } } */
-- 
2.36.3