Callable CPU code support (#1014)

* First pass support for compiling to a loaded shared library.

* Improve documentation for cpu target.

* Removed the SLANG_COMPILE_FLAG_LOAD_SHARED_LIBRARY flag.
Use the SLANG_HOST_CALLABLE code target
Document mechanism.

* Fix typo in cpp-resource.slang
In test code if the target is 'callable' we don't need to compile (indeed there is no source file).

* Small refactor using CommandLineCPPCompiler as base class to implement VisualStudioCPPCompiler and GCCCPPCompiler.

* Improvements around CPPCompiler.
Mechanism to know products produced.
Cleaning up products after execution.

* Fix multiple definition of 'SourceType'

1 files changed, 32 insertions, 19 deletions

diff --git a/tools/slang-test/slang-test-main.cpp b/tools/slang-test/slang-test-main.cpp
index 8be8f797a..8137733ee 100644
--- a/tools/slang-test/slang-test-main.cpp
+++ b/tools/slang-test/slang-test-main.cpp
@@ -556,6 +556,7 @@ static PassThroughFlags _getPassThroughFlagsForTarget(SlangCompileTarget target)
             return PassThroughFlag::Dxc;
         }
 
+        case SLANG_HOST_CALLABLE:
         case SLANG_EXECUTABLE:
         case SLANG_SHARED_LIBRARY:
         {
@@ -590,6 +591,8 @@ static SlangCompileTarget _getCompileTarget(const UnownedStringSlice& name)
         CASE("exe", EXECUTABLE)
         CASE("sharedlib", SHARED_LIBRARY)
         CASE("dll", SHARED_LIBRARY)
+        CASE("callable", HOST_CALLABLE)
+        CASE("host-callable", HOST_CALLABLE)
 #undef CASE
 
         return SLANG_TARGET_UNKNOWN;
@@ -1369,39 +1372,49 @@ static TestResult runCPPCompilerCompile(TestContext* context, TestInput& input)
     String ext = Path::getFileExt(filePath);
     String modulePath = Path::combine(directory, moduleName);
 
-    // Find the target
     UnownedStringSlice targetExt = UnownedStringSlice::fromLiteral("c");
+
+    // Find the target
     Index index = cmdLine.findArgIndex(UnownedStringSlice::fromLiteral("-target"));
     if (index >= 0 && index + 1 < cmdLine.getArgCount())
     {
         targetExt = cmdLine.m_args[index + 1].value.getUnownedSlice();
     }
 
-    CPPCompiler::CompileOptions options;
-    options.sourceType = (targetExt == "c") ? CPPCompiler::SourceType::C : CPPCompiler::SourceType::CPP;
+    // If output was C/C++ we should try compiling
+    if (targetExt == "c" || targetExt == "cpp")
+    {
+        CPPCompiler::CompileOptions options;
+        options.sourceType = (targetExt == "c") ? CPPCompiler::SourceType::C : CPPCompiler::SourceType::CPP;
 
-    options.includePaths.add("tests/cross-compile");
+        options.includePaths.add("tests/cross-compile");
 
-    // Create a filename to write this out to
-    String cppSource = modulePath + "." + targetExt;
-    Slang::File::writeAllText(cppSource, actualOutput);
+        // Create a filename to write this out to
+        String cppSource = modulePath + "." + targetExt;
+        Slang::File::writeAllText(cppSource, actualOutput);
 
-    // Okay we can now try compiling
+        // Okay we can now try compiling
 
-    // Compile this source
-    options.sourceFiles.add(cppSource);
-    options.modulePath = modulePath;
-    options.targetType = CPPCompiler::TargetType::SharedLibrary;
+        // Compile this source
+        options.sourceFiles.add(cppSource);
+        options.modulePath = modulePath;
+        options.targetType = CPPCompiler::TargetType::SharedLibrary;
 
-    CPPCompiler::Output output;
-    if (SLANG_FAILED(compiler->compile(options, output)))
-    {
-        return TestResult::Fail;
-    }
+        CPPCompiler::Output output;
+        if (SLANG_FAILED(compiler->compile(options, output)))
+        {
+            return TestResult::Fail;
+        }
 
-    if (output.getCountByType(CPPCompiler::OutputMessage::Type::Error) > 0)
+        if (output.getCountByType(CPPCompiler::OutputMessage::Type::Error) > 0)
+        {
+            return TestResult::Fail;
+        }
+    }
+    else
     {
-        return TestResult::Fail;
+        // Can only be callable
+        SLANG_ASSERT(targetExt == "callable" || targetExt == "host-callable");
     }
 
     return TestResult::Pass;