internal/rosa/llvm: populate metadata

This enables use of release monitoring for LLVM.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/llvm.go

@@ -73,12 +73,12 @@ func llvmFlagName(flag int) string {
 	}
 }
 
+const llvmVersion = "21.1.8"
+
 // newLLVMVariant returns a [pkg.Artifact] containing a LLVM variant.
 func (t Toolchain) newLLVMVariant(variant string, attr *llvmAttr) pkg.Artifact {
-	const (
-		version  = "21.1.8"
-		checksum = "8SUpqDkcgwOPsqHVtmf9kXfFeVmjVxl4LMn-qSE1AI_Xoeju-9HaoPNGtidyxyka"
-	)
+	const checksum = "8SUpqDkcgwOPsqHVtmf9kXfFeVmjVxl4LMn-qSE1AI_Xoeju-9HaoPNGtidyxyka"
+
 	if attr == nil {
 		panic("LLVM attr must be non-nil")
 	}
@@ -161,9 +161,9 @@ ln -s ld.lld /work/system/bin/ld
 		)
 	}
 
-	return t.NewPackage("llvm", version, pkg.NewHTTPGetTar(
+	return t.NewPackage("llvm", llvmVersion, pkg.NewHTTPGetTar(
 		nil, "https://github.com/llvm/llvm-project/archive/refs/tags/"+
-			"llvmorg-"+version+".tar.gz",
+			"llvmorg-"+llvmVersion+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
 	), &PackageAttr{
@@ -489,6 +489,40 @@ index 64324a3f8b01..15ce70b68217 100644
 
 	return
 }
+func init() {
+	artifactsM[LLVMCompilerRT] = Metadata{
+		f: func(t Toolchain) (pkg.Artifact, string) {
+			_, compilerRT, _, _ := t.newLLVM()
+			return compilerRT, llvmVersion
+		},
+
+		Name:        "llvm-compiler-rt",
+		Description: "LLVM runtime: compiler-rt",
+		Website:     "https://llvm.org/",
+	}
+
+	artifactsM[LLVMRuntimes] = Metadata{
+		f: func(t Toolchain) (pkg.Artifact, string) {
+			_, _, runtimes, _ := t.newLLVM()
+			return runtimes, llvmVersion
+		},
+
+		Name:        "llvm-runtimes",
+		Description: "LLVM runtimes: libunwind, libcxx, libcxxabi",
+		Website:     "https://llvm.org/",
+	}
+
+	artifactsM[LLVMClang] = Metadata{
+		f: func(t Toolchain) (pkg.Artifact, string) {
+			_, _, _, clang := t.newLLVM()
+			return clang, llvmVersion
+		},
+
+		Name:        "clang",
+		Description: `an "LLVM native" C/C++/Objective-C compiler`,
+		Website:     "https://llvm.org/",
+	}
+}
 
 var (
 	// llvm stores the result of Toolchain.newLLVM.