[clang] [llvm] [RISCV] Support RISC-V Profiles in -march option (PR #76357)

[Craig Topper via cfe-commits]

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@@ -244,6 +249,42 @@ static const RISCVSupportedExtension SupportedExperimentalExtensions[] = {
 };
 // clang-format on
 
+static const RISCVProfile SupportedProfiles[] = {
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topperc wrote:

`const` -> `constexpr` to be sure the StringLiteral constexpr constructor gets invoked.

https://github.com/llvm/llvm-project/pull/76357