[Committed] RISC-V: Add PR112450 test to avoid regression

[Juzhe-Zhong <juzhe.zhong@rivai.ai>]

ICE has been fixed by Richard:https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112450.

Add test to avoid future regression. Committed.

	PR target/112450

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/autovec/pr112450.c: New test.

---
 .../gcc.target/riscv/rvv/autovec/pr112450.c   | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/pr112450.c

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr112450.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr112450.c
new file mode 100644
index 00000000000..964a4d34e3d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr112450.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O2 --param=riscv-autovec-lmul=m8 -fno-vect-cost-model" } */
+
+int a, b, d, e;
+short c;
+void f() {
+  for (; e; e++) {
+    int g = 6;
+    for (; g > 2; g--) {
+      int i = -8;
+      while (i < 20) {
+        i += 5;
+        a += b;
+      }
+      c *= d;
+    }
+    b--;
+  }
+}
-- 
2.36.3