[llvm] [Triple] Add target triple support for CheriotRTOS. (PR #155374)

[Alexander Richardson via llvm-commits]

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@@ -687,49 +689,50 @@ static Triple::VendorType parseVendor(StringRef VendorName) {
 
 static Triple::OSType parseOS(StringRef OSName) {
   return StringSwitch<Triple::OSType>(OSName)
-    .StartsWith("darwin", Triple::Darwin)
-    .StartsWith("dragonfly", Triple::DragonFly)
-    .StartsWith("freebsd", Triple::FreeBSD)
-    .StartsWith("fuchsia", Triple::Fuchsia)
-    .StartsWith("ios", Triple::IOS)
-    .StartsWith("kfreebsd", Triple::KFreeBSD)
-    .StartsWith("linux", Triple::Linux)
-    .StartsWith("lv2", Triple::Lv2)
-    .StartsWith("macos", Triple::MacOSX)
-    .StartsWith("managarm", Triple::Managarm)
-    .StartsWith("netbsd", Triple::NetBSD)
-    .StartsWith("openbsd", Triple::OpenBSD)
-    .StartsWith("solaris", Triple::Solaris)
-    .StartsWith("uefi", Triple::UEFI)
-    .StartsWith("win32", Triple::Win32)
-    .StartsWith("windows", Triple::Win32)
-    .StartsWith("zos", Triple::ZOS)
-    .StartsWith("haiku", Triple::Haiku)
-    .StartsWith("rtems", Triple::RTEMS)
-    .StartsWith("aix", Triple::AIX)
-    .StartsWith("cuda", Triple::CUDA)
-    .StartsWith("nvcl", Triple::NVCL)
-    .StartsWith("amdhsa", Triple::AMDHSA)
-    .StartsWith("ps4", Triple::PS4)
-    .StartsWith("ps5", Triple::PS5)
-    .StartsWith("elfiamcu", Triple::ELFIAMCU)
-    .StartsWith("tvos", Triple::TvOS)
-    .StartsWith("watchos", Triple::WatchOS)
-    .StartsWith("bridgeos", Triple::BridgeOS)
-    .StartsWith("driverkit", Triple::DriverKit)
-    .StartsWith("xros", Triple::XROS)
-    .StartsWith("visionos", Triple::XROS)
-    .StartsWith("mesa3d", Triple::Mesa3D)
-    .StartsWith("amdpal", Triple::AMDPAL)
-    .StartsWith("hermit", Triple::HermitCore)
-    .StartsWith("hurd", Triple::Hurd)
-    .StartsWith("wasi", Triple::WASI)
-    .StartsWith("emscripten", Triple::Emscripten)
-    .StartsWith("shadermodel", Triple::ShaderModel)
-    .StartsWith("liteos", Triple::LiteOS)
-    .StartsWith("serenity", Triple::Serenity)
-    .StartsWith("vulkan", Triple::Vulkan)
-    .Default(Triple::UnknownOS);
+      .StartsWith("darwin", Triple::Darwin)
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arichardson wrote:

I wonder if it would make sense to have a separate NFC PR to clang-format Triple.cpp?

LLVM is quite inconsistent with switch statements though... The clang-format coding style requires a newline, but there are lots of short switch statements that use the one-line style. And then some of them are manually aligned and others aren't...

https://github.com/llvm/llvm-project/pull/155374