[gcc(refs/vendors/riscv/heads/gcc-13-with-riscv-opts)] RISC-V: Add ZVFHMIN block autovec testcase

[Jeff Law <law@gcc.gnu.org>]

https://gcc.gnu.org/g:2ac44392069eb516a5b859e74364d73f3f80012c

commit 2ac44392069eb516a5b859e74364d73f3f80012c
Author: Juzhe-Zhong <juzhe.zhong@rivai.ai>
Date:   Mon Jun 12 17:44:58 2023 +0800

    RISC-V: Add ZVFHMIN block autovec testcase
    
    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.

Diff:
---
 .../gcc.target/riscv/rvv/autovec/zvfhmin-1.c       | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)

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" } } */