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, 20 insertions, 0 deletions

diff --git a/source/core/slang-visual-studio-compiler-util.cpp b/source/core/slang-visual-studio-compiler-util.cpp
index 356f21a25..1a42e9b6e 100644
--- a/source/core/slang-visual-studio-compiler-util.cpp
+++ b/source/core/slang-visual-studio-compiler-util.cpp
@@ -5,6 +5,11 @@
 #include "../../slang-com-helper.h"
 #include "slang-string-util.h"
 
+// if Visual Studio import the visual studio platform specific header
+#if SLANG_VC
+#   include "windows/slang-win-visual-studio-util.h"
+#endif
+
 #include "slang-io.h"
 
 namespace Slang
@@ -429,4 +434,19 @@ static SlangResult _parseVisualStudioLine(const UnownedStringSlice& line, Downst
     return SLANG_OK;
 }
 
+/* static */SlangResult VisualStudioCompilerUtil::locateCompilers(const String& path, ISlangSharedLibraryLoader* loader, DownstreamCompilerSet* set)
+{
+    SLANG_UNUSED(loader);
+
+    // TODO(JS): We don't support fixed path for visual studio just yet
+    if (path.getLength() == 0)
+    {
+#if SLANG_VC
+        return WinVisualStudioUtil::find(set);
+#endif
+    }
+
+    return SLANG_OK;
+}
+
 }