Implement FileCheck tests for several test commands (#2747)

* Add missing expected.txt for test

* Diagnostics -> StdWriters in render test

* Allow specifying several test prefixes to run

`slang-test -- tests/foo tests/bar`

* Squash warnings in some tests

* Enable gfx debug layer in gfx test util

Makes this issue present consistently: https://github.com/shader-slang/slang/issues/2766

* Allow DebugDevice to return interfaces instantiated by the debugged object

* Check that we actaully have a shader cache for shader cache tests

* Implement FileCheck tests for several test commands

- SIMPLE, SIMPLE_EX
- SIMPLE_LINE
- REFLECTION, CPU_REFLECTION
- CROSS_COMPILE

It does not currently support the render tests or the COMPARE_COMPUTE commands

It is invoked by adding `(filecheck=MY_FILECHECK_PREFIX)` to the test command, for example

TEST:CROSS_COMPILE(filecheck=SPIRV): -target spirv-assembly

* Move LLVM FileCheck interface to slang-llvm

* Neaten slang-test tests

* Refine handling of expected output in slang-test

* Add example FileCheck buffer test

* Add cuda-kernel-export tests

Which were waiting on FileCheck

* Bump vs project files

* Make createLLVMFileCheck_V1 return a void* rather than specifically an IFileCheck

* Remove use of CharSlice from filecheck interface

* Bump slang-llvm version

---------

Co-authored-by: jsmall-nvidia <jsmall@nvidia.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/tools/slang-test/test-context.cpp b/tools/slang-test/test-context.cpp
index 8d8c20adf..6c9c7f549 100644
--- a/tools/slang-test/test-context.cpp
+++ b/tools/slang-test/test-context.cpp
@@ -59,6 +59,26 @@ TestReporter* TestContext::getTestReporter()
     return m_reporters[slangTestThreadIndex];
 }
 
+SlangResult TestContext::locateFileCheck()
+{
+    DefaultSharedLibraryLoader* loader = DefaultSharedLibraryLoader::getSingleton();
+    ComPtr<ISlangSharedLibrary> library;
+    SLANG_RETURN_ON_FAIL(loader->loadSharedLibrary("slang-llvm", library.writeRef()));
+
+    if (!library)
+    {
+        return SLANG_FAIL;
+    }
+
+    using CreateFileCheckFunc = SlangResult (*)(const SlangUUID&, void**);
+    auto fn = reinterpret_cast<CreateFileCheckFunc>(library->findFuncByName("createLLVMFileCheck_V1"));
+    if(!fn)
+    {
+        return SLANG_FAIL;
+    }
+    return fn(SLANG_IID_PPV_ARGS(m_fileCheck.writeRef()));
+}
+
 Result TestContext::init(const char* inExePath)
 {
     m_session = spCreateSession(nullptr);
@@ -68,6 +88,9 @@ Result TestContext::init(const char* inExePath)
     }
     exePath = inExePath;
     SLANG_RETURN_ON_FAIL(TestToolUtil::getExeDirectoryPath(inExePath, exeDirectoryPath));
+
+    SLANG_RETURN_ON_FAIL(locateFileCheck());
+
     return SLANG_OK;
 }