Slang compiles CUDA source via NVRTC (#1151)

* 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.

* Fix warning on clang.

1 files changed, 8 insertions, 6 deletions

diff --git a/source/slang/slang-check.cpp b/source/slang/slang-check.cpp
index 3586fcf25..db69a3155 100644
--- a/source/slang/slang-check.cpp
+++ b/source/slang/slang-check.cpp
@@ -121,11 +121,11 @@ namespace Slang
         return func;
     }
 
-    DownstreamCompilerSet* Session::requireCPPCompilerSet()
+    DownstreamCompilerSet* Session::requireDownstreamCompilerSet()
     {
-        if (cppCompilerSet == nullptr)
+        if (downstreamCompilerSet == nullptr)
         {
-            cppCompilerSet = new DownstreamCompilerSet;
+            downstreamCompilerSet = new DownstreamCompilerSet;
 
             typedef DownstreamCompiler::CompilerType CompilerType;
             DownstreamCompilerUtil::InitializeSetDesc desc;
@@ -134,10 +134,12 @@ namespace Slang
             desc.paths[int(CompilerType::Clang)] = m_downstreamCompilerPaths[int(PassThroughMode::Clang)];
             desc.paths[int(CompilerType::VisualStudio)] = m_downstreamCompilerPaths[int(PassThroughMode::VisualStudio)];
 
-            DownstreamCompilerUtil::initializeSet(desc, cppCompilerSet);
+            desc.sharedLibraries[int(CompilerType::NVRTC)] = getOrLoadSharedLibrary(SharedLibraryType::NVRTC, nullptr);
+
+            DownstreamCompilerUtil::initializeSet(desc, downstreamCompilerSet);
         }
-        SLANG_ASSERT(cppCompilerSet);
-        return cppCompilerSet;
+        SLANG_ASSERT(downstreamCompilerSet);
+        return downstreamCompilerSet;
     }
 
     TypeCheckingCache* Session::getTypeCheckingCache()