Test for serializing out and reading back Stdlib (#1605)

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

* Mangling/module name extraction for GenericDecl

* Add comment on SerialFilter to explain re-enabling Stmt.

* Support setting up SyntaxDecl when reconstructed after deserialization.

* Improvements to setup SyntaxDecl.

* Fix typo so can read compressed SourceLocs.

* Fix issue with SourceManger.

* Simple test for serializing out stdlib and reading back in.

* Fix calling convention.

* Add override to StdLib impls.

* Fix typo.

* Apply testing to an actual compute test when using load-stdlib
Make -load/compile-stdlib processable by Slang
Move out testing into util into TestToolUtil so can be shared.

* Slightly more concise setup of session.

* Fix some errors introduced with session handling.

* Made setup for compile same across slangc and slangc-tool.

1 files changed, 13 insertions, 2 deletions

diff --git a/tools/render-test/render-test-main.cpp b/tools/render-test/render-test-main.cpp
index 85e038e5a..f6f3e4ce6 100644
--- a/tools/render-test/render-test-main.cpp
+++ b/tools/render-test/render-test-main.cpp
@@ -787,14 +787,25 @@ static SlangResult _innerMain(Slang::StdWriters* stdWriters, SlangSession* sessi
 	}
 }
 
-SLANG_TEST_TOOL_API SlangResult innerMain(Slang::StdWriters* stdWriters, SlangSession* session, int argcIn, const char*const* argvIn)
+SLANG_TEST_TOOL_API SlangResult innerMain(Slang::StdWriters* stdWriters, SlangSession* sharedSession, int inArgc, const char*const* inArgv)
 {
     using namespace Slang;
 
+    // Assume we will used the shared session
+    ComPtr<slang::IGlobalSession> session(sharedSession);
+
+    // The sharedSession always has a pre-loaded stdlib.
+    // This differed test checks if the command line has an option to setup the stdlib.
+    // If so we *don't* use the sharedSession, and create a new stdlib-less session just for this compilation. 
+    if (TestToolUtil::hasDeferredStdLib(Index(inArgc - 1), inArgv + 1))
+    {
+        SLANG_RETURN_ON_FAIL(slang_createGlobalSessionWithoutStdLib(SLANG_API_VERSION, session.writeRef()));
+    }
+
     SlangResult res = SLANG_FAIL;
     try
     {
-        res = _innerMain(stdWriters, session, argcIn, argvIn);
+        res = _innerMain(stdWriters, session, inArgc, inArgv);
     }
     catch (const Slang::Exception& exception)
     {