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, 9 insertions, 0 deletions

diff --git a/source/slang/slang-compiler.cpp b/source/slang/slang-compiler.cpp
index 513f9623d..9f10876a0 100644
--- a/source/slang/slang-compiler.cpp
+++ b/source/slang/slang-compiler.cpp
@@ -480,6 +480,7 @@ namespace Slang
             {
                 return SourceLanguage::GLSL;
             }
+            case PassThroughMode::LLVM:
             case PassThroughMode::Clang:
             case PassThroughMode::VisualStudio:
             case PassThroughMode::Gcc:
@@ -493,6 +494,7 @@ namespace Slang
             {
                 return SourceLanguage::CUDA;
             }
+            
             default: break;
         }
         SLANG_ASSERT(!"Unknown compiler");
@@ -1791,6 +1793,13 @@ namespace Slang
                 ComPtr<ISlangBlob> blob;
                 if (SLANG_FAILED(result.getBlob(blob)))
                 {
+                    if (targetReq->getTarget() == CodeGenTarget::HostCallable)
+                    {
+                        // Some HostCallable are not directly representable as a 'binary'.
+                        // So here, we just ignore if that appears the case, and don't output an unexpected error.
+                        return;
+                    }
+
                     SLANG_UNEXPECTED("No blob to emit");
                     return;
                 }