Add -dump-module command to slangc (#6638)

* Add -dump-module command to slangc

The new -dump-module command to slangc will load and disassemble a slang module, similar to what would be seen by the -dump-ir command, except that -dump-ir tells slangc to print IR as it performs some compilation command. That is, -dump-ir requires
some larger compilation task.

-dump-module on the otherhand requires no additional goal and will simply load a module and print its IR to stdout independently from other compilation steps.

Its intended purpose is to inspect .slang-module files on disk.
It can also be used on .slang files which will be parsed and lowered
if slang does not find an associated ".slang-module" version of the
module on disk.

The compilation API is extended with a new IModule::disassemble()
method which retrieves the string representation of the dumped IR.

Closes #6599

* format code

* Use FileStream not FILE

* format code

---------

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

2 files changed, 10 insertions, 0 deletions

diff --git a/source/slang-record-replay/record/slang-module.cpp b/source/slang-record-replay/record/slang-module.cpp
index 2071a8491..628a29c90 100644
--- a/source/slang-record-replay/record/slang-module.cpp
+++ b/source/slang-record-replay/record/slang-module.cpp
@@ -244,4 +244,12 @@ IEntryPointRecorder* ModuleRecorder::getEntryPointRecorder(slang::IEntryPoint* e
         return result.detach();
     }
 }
+
+SlangResult ModuleRecorder::disassemble(ISlangBlob** outBlob)
+{
+    // No need to record this call as it is just a query.
+    slangRecordLog(LogLevel::Verbose, "%s\n", __PRETTY_FUNCTION__);
+    auto res = m_actualModule->disassemble(outBlob);
+    return res;
+}
 } // namespace SlangRecord
diff --git a/source/slang-record-replay/record/slang-module.h b/source/slang-record-replay/record/slang-module.h
index 7608ac52d..d9c83576d 100644
--- a/source/slang-record-replay/record/slang-module.h
+++ b/source/slang-record-replay/record/slang-module.h
@@ -56,6 +56,8 @@ public:
         ISlangBlob** outDiagnostics) override;
     virtual SLANG_NO_THROW SlangInt32 SLANG_MCALL getDependencyFileCount() override;
     virtual SLANG_NO_THROW char const* SLANG_MCALL getDependencyFilePath(SlangInt32 index) override;
+    virtual SLANG_NO_THROW SlangResult SLANG_MCALL
+    disassemble(slang::IBlob** outDisassembly) override;
 
     // Interfaces for `IComponentType`
     virtual SLANG_NO_THROW slang::ISession* SLANG_MCALL getSession() override