[PATCH v2 3/3] RISC-V: Add ZC* test for failed march args being passed.

[Jiawei]

Add ZC* extensions march args tests for error input cases.

Co-Authored by: Nandni Jamnadas <nandni.jamna...@embecosm.com>
Co-Authored by: Jiawei <jia...@iscas.ac.cn>
Co-Authored by: Mary Bennett <mary.benn...@embecosm.com>
Co-Authored by: Simon Cook <simon.c...@embecosm.com>

gcc/testsuite/ChangeLog:

        * gcc.target/riscv/arch-22.c: New test.
        * gcc.target/riscv/arch-23.c: New test.

---
 gcc/testsuite/gcc.target/riscv/arch-22.c | 5 +++++
 gcc/testsuite/gcc.target/riscv/arch-23.c | 5 +++++
 2 files changed, 10 insertions(+)
 create mode 100644 gcc/testsuite/gcc.target/riscv/arch-22.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/arch-23.c

diff --git a/gcc/testsuite/gcc.target/riscv/arch-22.c 
b/gcc/testsuite/gcc.target/riscv/arch-22.c
new file mode 100644
index 00000000000..3be4ade65a7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/arch-22.c
@@ -0,0 +1,5 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64i_zcf -mabi=lp64" } */
+int foo() {}
+/* { dg-error "'-march=rv64i_zcf': zcf extension supports in rv32 only" "" { 
target *-*-* } 0 } */
+/* { dg-error "'-march=rv64i_zca_zcf': zcf extension supports in rv32 only" "" 
{ target *-*-* } 0 } */
diff --git a/gcc/testsuite/gcc.target/riscv/arch-23.c 
b/gcc/testsuite/gcc.target/riscv/arch-23.c
new file mode 100644
index 00000000000..cecce06e474
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/arch-23.c
@@ -0,0 +1,5 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64if_zce -mabi=lp64" } */
+int foo() {}
+/* { dg-error "'-march=rv64if_zce': zcf extension supports in rv32 only" "" { 
target *-*-* } 0 } */
+/* { dg-error "'-march=rv64if_zca_zcb_zce_zcf_zcmp_zcmt': zcf extension 
supports in rv32 only" "" { target *-*-* } 0 } */
-- 
2.25.1