Use DownstreamCompiler for all downstream compilers (#1152)

* CPPCompiler -> DownstreamCompiler

* Added DownstreamCompileResult to start abstraction such that we don't need files.

* * Split out slang-blob.cpp
* Made CompileResult hold a DownstreamCompileResult - for access to binary or ISlangSharedLibrary

* Keep temporary files in scope.

* Add a hash to the hex dump stream.

* Move all file tracking into DownstreamCompiler.

* WIP support for nvrtc.

* WIP: Adding support for nvrtc compiler.
Adding enum types, wiring up the nvrtc into slang.

* Fix remaining CPPCompiler references.

* Fix order issue on target string matching.

* Use ISlangSharedLibrary for nvrtc.

* Use DownstreamCompiler for nvrtc.

* WIP first pass at compilation win nvrtc.

* Added testing if file is on file system into CommandLineDownstreamCompiler.
Added sourceContentsPath.

* Make test cuda-compile.cu work by just compiling not comparing output.

* Genearlize DownstreamCompiler usage.

* Fix warning on clang.

* Remove CompilerType from DownstreamCompiler.

* Use DownstreamCompiler interface for all compilers.

NOTE for FXC, DXC and GLSLANG this doesn't mean using 'compile' - it's still extracting functions from shared library.

* Fix compiling on gcc/clang for DownstreamCompiler.

* Fix problem on non-vc builds with not having return on locateCompilers for VS.

* Change so no warning for code not reachable on locateCompilers for vs.

1 files changed, 11 insertions, 5 deletions

diff --git a/tools/slang-test/test-context.cpp b/tools/slang-test/test-context.cpp
index d333dbcaa..ee5629900 100644
--- a/tools/slang-test/test-context.cpp
+++ b/tools/slang-test/test-context.cpp
@@ -87,13 +87,19 @@ DownstreamCompilerSet* TestContext::getCompilerSet()
     {
         compilerSet = new DownstreamCompilerSet;
 
-        DownstreamCompilerUtil::InitializeSetDesc desc;
+        DownstreamCompilerLocatorFunc locators[int(SLANG_PASS_THROUGH_COUNT_OF)] = { nullptr };
 
-        ComPtr<ISlangSharedLibrary> nvrtcSharedLibrary;
-        DefaultSharedLibraryLoader::getSingleton()->loadSharedLibrary(DefaultSharedLibraryLoader::getSharedLibraryNameFromType(SharedLibraryType::NVRTC), nvrtcSharedLibrary.writeRef());
-        desc.sharedLibraries[int(DownstreamCompiler::CompilerType::NVRTC)] = nvrtcSharedLibrary;
+        DownstreamCompilerUtil::setDefaultLocators(locators);
+        for (Index i = 0; i < Index(SLANG_PASS_THROUGH_COUNT_OF); ++i)
+        {
+            auto locator = locators[i];
+            if (locator)
+            {
+                locator(String(), DefaultSharedLibraryLoader::getSingleton(), compilerSet);
+            }
+        }
 
-        DownstreamCompilerUtil::initializeSet(desc, compilerSet);
+        DownstreamCompilerUtil::updateDefaults(compilerSet);
     }
     return compilerSet;
 }