[Clang] Add test for hw-shadodw-stack

Author: jaidTw

clang/test/CodeGen/RISCV/attr-hw-shadow-stack.c

@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -triple riscv64-unknown-linux -target-feature +zimop -emit-llvm -o - %s -fcf-protection=return | FileCheck %s
+// RUN: %clang_cc1 -triple riscv64-unknown-linux -target-feature +zimop -emit-llvm -o - %s | FileCheck -check-prefix=NOSHADOWSTACK %s
+// RUN: %clang_cc1 -triple riscv32-unknown-linux -target-feature +zimop -emit-llvm -o - %s -fcf-protection=return | FileCheck %s
+// RUN: %clang_cc1 -triple riscv32-unknown-linux -target-feature +zimop -emit-llvm -o - %s | FileCheck -check-prefix=NOSHADOWSTACK %s
+
+int foo(int *a) { return *a; }
+
+// CHECK: attributes {{.*}}"hw-shadow-stack"{{.*}}
+// NOSHADOWSTACK-NOT: attributes {{.*}}"hw-shadow-stack"{{.*}}