AppVeyor: Add LTO integration test

And test portability too.

appveyor.yml

@@ -39,7 +39,7 @@ install:
   - cd libcurl
   - 7z x ..\libcurl.zip > nul
   - cd ..
-  # Copy libcurl.{dll,lib} to final LDC installation directory and add to PATH
+  # Copy libcurl.{dll,lib} to LDC installation directory and add to PATH
   - md ldc2-%APPVEYOR_JOB_ARCH% && md ldc2-%APPVEYOR_JOB_ARCH%\bin && md ldc2-%APPVEYOR_JOB_ARCH%\lib
   - ps: |
         If ($Env:APPVEYOR_JOB_ARCH -eq 'x64') {
@@ -161,10 +161,21 @@ after_test:
         cp ldc/LICENSE "$ldcInstallDir"
         git clone https://github.com/ldc-developers/ldc-scripts.git
         cp ldc-scripts\ldc2-packaging\pkgfiles\README.txt "$ldcInstallDir"
+        # Now rename the installation dir to test portability.
+        ren "$ldcInstallDir" ldc2-install
+  # Hello world integration test with LTO
+  - ps: |
+        cd c:\projects
+        $ldcInstallDir = 'c:\projects\ldc2-install'
+        echo 'void main() { import std.stdio; writefln("Hello world, %d bits", size_t.sizeof * 8); }' > hello.d
+        & "$ldcInstallDir\bin\ldc2.exe" hello.d -of=hello_thin.exe -flto=thin -defaultlib=phobos2-ldc-lto,druntime-ldc-lto
+        .\hello_thin.exe
+        & "$ldcInstallDir\bin\ldc2.exe" hello.d -of=hello_full.exe -flto=full -defaultlib=phobos2-ldc-lto,druntime-ldc-lto
+        .\hello_full.exe
   # Build dub
   - ps: |
         cd c:\projects
-        $ldcInstallDir = "c:\projects\ldc2-$Env:APPVEYOR_JOB_ARCH"
+        $ldcInstallDir = 'c:\projects\ldc2-install'
         Set-Item -path env:DC -value "$ldcInstallDir\bin\ldmd2"
         git clone --recursive https://github.com/dlang/dub.git
         cd dub
@@ -175,7 +186,7 @@ after_test:
   # Build dlang tools
   - ps: |
         cd c:\projects
-        $ldcInstallDir = "c:\projects\ldc2-$Env:APPVEYOR_JOB_ARCH"
+        $ldcInstallDir = 'c:\projects\ldc2-install'
         git clone --recursive https://github.com/dlang/tools.git
         cd tools
         & "$ldcInstallDir\bin\ldmd2" -w rdmd.d
@@ -190,9 +201,9 @@ after_test:
         } Else {
           $artifactBasename = "ldc2-$($Env:APPVEYOR_REPO_COMMIT.Substring(0, 8))-windows-$Env:APPVEYOR_JOB_ARCH"
         }
-        ren "ldc2-$Env:APPVEYOR_JOB_ARCH" $artifactBasename
+        ren ldc2-install $artifactBasename
         7z a -mx=9 "$artifactBasename.7z" $artifactBasename > $null
-        ren $artifactBasename "ldc2-$Env:APPVEYOR_JOB_ARCH"
+        ren $artifactBasename ldc2-install
         Push-AppveyorArtifact "$artifactBasename.7z"
   # x86 job: Create a 32/64-bit multilib artifact if the commit is on the master branch
   # (or a tag). It consists of the x64 artifact (published by a successful x64 job)
@@ -225,10 +236,10 @@ after_test:
             ren "$artifactBasename-x64" "$artifactBasename-multilib"
             cd "$artifactBasename-multilib"
             ren lib lib64
-            copy ..\ldc2-x86\lib -Recurse
+            copy ..\ldc2-install\lib -Recurse
             ren lib lib32
             (cat etc\ldc2.conf).replace('%%ldcbinarypath%%/../lib', '%%ldcbinarypath%%/../lib64') | Set-Content etc\ldc2.conf
-            $conf32 = cat ..\ldc2-x86\etc\ldc2.conf -Raw
+            $conf32 = cat ..\ldc2-install\etc\ldc2.conf -Raw
             $conf32 = "`r`n""i[3-6]86-.*-windows-msvc"":" + $conf32.Substring($conf32.IndexOf("`r`ndefault:") + 10)
             $conf32 = $conf32.Substring(0, $conf32.IndexOf("`r`n};`r`n") + 6)
             $conf32 = $conf32.Replace('%%ldcbinarypath%%/../lib', '%%ldcbinarypath%%/../lib32')