run.d: use explicit architecture to build tools (ldc is too dependent on environment)

.azure-pipelines/windows-msbuild.bat

@@ -48,6 +48,13 @@ msbuild /target:dmd /p:Configuration=%CONFIGURATION% /p:Platform=%PLATFORM% %LDC
 %DMD% --version
 grep --version
 
+rem compile run.d before changing the LIB environment variable
+if "%D_COMPILER%" == "ldc" set HOST_DMD=%LDC_DIR%\bin\ldmd2.exe
+if "%D_COMPILER%" == "dmd" set HOST_DMD=%DMD_DIR%\dmd2\windows\bin\dmd.exe
+
+cd "%DMD_DIR%\test"
+"%HOST_DMD%" -m%MODEL% -i run.d || exit /B 6
+
 set DRUNTIME_TESTS=test_all
 cd "%DMD_DIR%"
 if "%C_RUNTIME%" == "mingw" (
@@ -88,12 +95,7 @@ set OS=windows
 set CC=cl.exe
 set DMD_MODEL=%PLATFORM%
 set BUILD=%CONFIGURATION%
-if "%D_COMPILER%" == "ldc" set HOST_DMD=%LDC_DIR%\bin\ldmd2.exe
-if "%D_COMPILER%" == "dmd" set HOST_DMD=%DMD_DIR%\dmd2\windows\bin\dmd.exe
-
-if "%D_COMPILER%" == "ldc" set RDMD=%LDC_DIR%\bin\rdmd
-if "%D_COMPILER%" == "dmd" set RDMD=%DMD_DIR%\dmd2\windows\bin\rdmd
-"%RDMD%" -m%MODEL% run.d || exit /B 6
+run.exe || exit /B 6
 
 cd "%DMD_DIR%\..\phobos"
 REM Check: build phobos unittests

azure-pipelines.yml

@@ -79,7 +79,7 @@ jobs:
       VSINSTALLDIR: C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\
     strategy:
       matrix:
-        x64-debug-ldc:
+        win32-ldc:
           OS: Win_32
           MODEL: 32mscoff
           ARCH: x86

test/run.d

@@ -236,6 +236,7 @@ void ensureToolsExists(string[string] env, const TestTool[] tools ...)
             {
                 command = [
                     hostDMD,
+                    "-m"~env["MODEL"],
                     "-of"~targetBin,
                     sourceFile
                 ] ~ tool.extraArgs;