[compiler-rt] [compiler-rt][cmake] Test COMPILER_RT_HAS_AARCH64_SME with arm64 (PR #141115)

[Amara Emerson via llvm-commits]

================
@@ -41,14 +41,14 @@ asm(\".arch armv8-a+lse\");
 asm(\"cas w0, w1, [x2]\");
 ")
 
-builtin_check_c_compiler_source(COMPILER_RT_HAS_AARCH64_SME
+builtin_check_c_compiler_source_with_flags(COMPILER_RT_HAS_AARCH64_SME
 "
 void foo(void)  __arm_streaming_compatible {
   asm(\".arch armv9-a+sme2\\n\"
       \"smstart\\n\"
       \"ldr zt0, [sp]\");
 }
-")
+" "-target aarch64-linux-gnu")
----------------
aemerson wrote:

The idea of this test is to check if the clang version is new enough in terms of features that it doesn't barf when given SME2 constructs and the keyword attributes `__arm_streaming_compatible`. It doesn't need to check for a specific clang version.

https://github.com/llvm/llvm-project/pull/141115