[clang] [llvm] [WIP][RISCV] Support __builtin_cpu_init and __builtin_cpu_supports (PR #99700)

[Piyou Chen via cfe-commits]

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@@ -62,6 +62,8 @@
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/ScopedPrinter.h"
 #include "llvm/TargetParser/AArch64TargetParser.h"
+#include "llvm/TargetParser/RISCVISAInfo.h"
+#include "llvm/TargetParser/RISCVTargetParser.h"
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BeMg wrote:

`RISCVTargetParser.h` can be dropped due to its come from tablegen stuff.

https://github.com/llvm/llvm-project/pull/99700