Add LLVM via choco (#4056)

images/win/scripts/SoftwareReport/SoftwareReport.Common.psm1

@@ -94,6 +94,11 @@ function Get-JuliaVersion {
     return "Julia $juliaVersion"
 }
 
+function Get-LLVMVersion {
+    $llvmVersion = [regex]::matches($(clang --version), "\d+\.\d+\.\d+").Value
+    return "LLVM $llvmVersion"
+}
+
 function Get-PerlVersion {
     ($(perl --version) | Out-String) -match "\(v(?<version>\d+\.\d+\.\d+)\)" | Out-Null
     $perlVersion = $Matches.Version

images/win/scripts/SoftwareReport/SoftwareReport.Generator.ps1

@@ -35,6 +35,7 @@ $languageTools = @(
     (Get-BashVersion),
     (Get-GoVersion),
     (Get-JuliaVersion),
+    (Get-LLVMVersion),
     (Get-NodeVersion),
     (Get-PHPVersion),
     (Get-PythonVersion),

images/win/scripts/Tests/Tools.Tests.ps1

@@ -81,6 +81,15 @@ Describe "KubernetesTools" {
     }
 }
 
+Describe "LLVM" {
+    It "<ToolName>" -TestCases @(
+        @{ ToolName = "clang" }
+        @{ ToolName = "clang++" }
+    ) {
+        "$ToolName --version" | Should -ReturnZeroExitCode
+    }
+}
+
 Describe "Mingw64" {
     It "<ToolName>" -TestCases @(
         @{ ToolName = "gcc" }