Add more debug log for swiftc invocation

Author: Steelskin

utils/build.ps1

@@ -1075,6 +1075,20 @@ function Build-CMakeProject {
       } else {
         TryAdd-KeyValue $Defines CMAKE_Swift_COMPILER (Join-Path -Path (Get-PinnedToolchainTool) -ChildPath  "swiftc.exe")
       }
+
+      $DebugSwiftC = $Defines["CMAKE_Swift_COMPILER"]
+      Write-Host "DEBUG DEBUG DEBUG CMAKE_Swift_COMPILER: $DebugSwiftC"
+      $DumpSwiftC = dumpbin /Dependents $DebugSwiftC
+      Write-Host "DEBUG DEBUG DEBUG DumpSwiftC: $DumpSwiftC"
+      $BinFolder = Split-Path $DebugSwiftC
+      Write-Host "DEBUG DEBUG DEBUG BinFolder: $BinFolder"
+      $DumpChildren = Get-ChildItem $BinFolder
+      Write-Host "DEBUG DEBUG DEBUG DumpChildren: $DumpChildren"
+      $SwiftDriver = Join-Path -Path $BinFolder -ChildPath "swift-driver.exe"
+      Write-Host "DEBUG DEBUG DEBUG SwiftDriver: $SwiftDriver"
+      $DumpSwiftDriver = dumpbin /Dependents $SwiftDriver
+      Write-Host "DEBUG DEBUG DEBUG DumpSwiftDriver: $DumpSwiftDriver"
+
       if (-not ($Platform -eq "Windows")) {
         TryAdd-KeyValue $Defines CMAKE_Swift_COMPILER_WORKS = "YES"
       }