First Slang LLVM integration (#1934)

* #include an absolute path didn't work - because paths were taken to always be relative.

* First integration with 'slang-llvm'.

* Fix project.

* Fix test output.

* First pass assert support.

* Add inline impls for min and max.

* Add abs inline abs impl for llvm.

* Make abs not use ternary op

* Fix typo in slang-llvm.h

* Sundary fixes to make remaining tests using llvm backend pass.

1 files changed, 54 insertions, 0 deletions

diff --git a/source/compiler-core/slang-llvm-compiler.cpp b/source/compiler-core/slang-llvm-compiler.cpp
new file mode 100644
index 000000000..9b301ffab
--- /dev/null
+++ b/source/compiler-core/slang-llvm-compiler.cpp
@@ -0,0 +1,54 @@
+// slang-llvm-compiler.cpp
+#include "slang-llvm-compiler.h"
+
+#include "../core/slang-common.h"
+#include "../../slang-com-helper.h"
+
+#include "../core/slang-blob.h"
+
+#include "../core/slang-string-util.h"
+#include "../core/slang-string-slice-pool.h"
+
+#include "../core/slang-io.h"
+#include "../core/slang-shared-library.h"
+#include "../core/slang-semantic-version.h"
+#include "../core/slang-char-util.h"
+
+#include "slang-include-system.h"
+#include "slang-source-loc.h"
+
+#include "../core/slang-shared-library.h"
+
+namespace Slang
+{
+
+/* static */SlangResult LLVMDownstreamCompilerUtil::locateCompilers(const String& path, ISlangSharedLibraryLoader* loader, DownstreamCompilerSet* set)
+{
+    ComPtr<ISlangSharedLibrary> library;
+
+    SLANG_RETURN_ON_FAIL(DownstreamCompilerUtil::loadSharedLibrary(path, loader, nullptr, "slang-llvm", library));
+
+    SLANG_ASSERT(library);
+    if (!library)
+    {
+        return SLANG_FAIL;
+    }
+
+    typedef SlangResult(*CreateDownstreamCompilerFunc)(RefPtr<DownstreamCompiler>& out);
+
+    auto fn = (CreateDownstreamCompilerFunc)library->findFuncByName("createLLVMDownstreamCompiler");
+    if (!fn)
+    {
+        return SLANG_FAIL;
+    }
+
+    RefPtr<DownstreamCompiler> downstreamCompiler;
+
+    SLANG_RETURN_ON_FAIL(fn(downstreamCompiler));
+
+    set->addSharedLibrary(library);
+    set->addCompiler(downstreamCompiler);
+    return SLANG_OK;
+}
+
+}