Stable names and backwards compat for serialized IR modules (#7644)

* stable names

* tests, options and ci for stable names

* Add back compat design document

* fix warnings

* formatting

* comment

* neaten

* regenerate command line reference

* consolidate ci scripts

* faster ci

* remove libreadline

* Move new function to end of interface

---------

Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>

2 files changed, 38 insertions, 0 deletions

diff --git a/source/slang-record-replay/record/slang-session.cpp b/source/slang-record-replay/record/slang-session.cpp
index 800d690fa..254e1b091 100644
--- a/source/slang-record-replay/record/slang-session.cpp
+++ b/source/slang-record-replay/record/slang-session.cpp
@@ -92,6 +92,39 @@ SLANG_NO_THROW slang::IModule* SessionRecorder::loadModuleFromIRBlob(
     return static_cast<slang::IModule*>(pModuleRecorder);
 }
 
+SLANG_NO_THROW SlangResult SLANG_MCALL SessionRecorder::loadModuleInfoFromIRBlob(
+    slang::IBlob* source,
+    SlangInt& outModuleVersion,
+    const char*& outModuleCompilerVersion,
+    const char*& outModuleName)
+{
+    slangRecordLog(LogLevel::Verbose, "%s\n", __PRETTY_FUNCTION__);
+
+    ParameterRecorder* recorder{};
+    {
+        recorder = m_recordManager->beginMethodRecord(
+            ApiCallId::ISession_loadModuleFromIRBlob,
+            m_sessionHandle);
+        recorder->recordPointer(source);
+        recorder = m_recordManager->endMethodRecord();
+    }
+
+    const auto result = m_actualSession->loadModuleInfoFromIRBlob(
+        source,
+        outModuleVersion,
+        outModuleCompilerVersion,
+        outModuleName);
+
+    {
+        recorder->recordInt64(outModuleVersion);
+        recorder->recordString(outModuleCompilerVersion);
+        recorder->recordString(outModuleName);
+        m_recordManager->apendOutput();
+    }
+
+    return result;
+}
+
 SLANG_NO_THROW slang::IModule* SessionRecorder::loadModuleFromSource(
     const char* moduleName,
     const char* path,
diff --git a/source/slang-record-replay/record/slang-session.h b/source/slang-record-replay/record/slang-session.h
index 9cff7beac..26c591b1c 100644
--- a/source/slang-record-replay/record/slang-session.h
+++ b/source/slang-record-replay/record/slang-session.h
@@ -29,6 +29,11 @@ public:
         const char* path,
         slang::IBlob* source,
         slang::IBlob** outDiagnostics = nullptr) override;
+    SLANG_NO_THROW SlangResult SLANG_MCALL loadModuleInfoFromIRBlob(
+        slang::IBlob* source,
+        SlangInt& outModuleVersion,
+        const char*& outModuleCompilerVersion,
+        const char*& outModuleName) override;
     SLANG_NO_THROW slang::IModule* SLANG_MCALL loadModuleFromSource(
         const char* moduleName,
         const char* path,