Report AD checkpoint contexts (#5058)

* Transferring source locations when creating phi instructions

* Tracking for simple variables

* Deriving source locations for loop counters

* Printing checkpoint structure breakdown

* More readable output format

* Special behavior for loop counters

* Writing report to file

* Add slangc option to enable checkpoint reports

* Display types of checkpointed fields

* Message in case there are no checkpointing contexts

* Catch source locations for function calls

* Source cleanup

* Fix compilation warnings

* Remove stray dump()

* Provide the report through diagnostic notes

* Add missing path for sourceLoc during unzip pass

* Add tests for reporting intermediates

* Include more transfer cases for source locations

* Fix ordering in address elimination

* Fill in more holes with source location transfer

* Remove debugging line

* Reverting changes to diagnostic sink

* Simplify address elimination using source location RAII contexts

* Eliminating manual source loc transfers in forward transcription

* Fix local var adaptation to use RAII location setter

* Simplify primal hoisting logic for source location transfer

* Simplify unzipping with RAII location scopes

* Simplify transpose logic

* Cleaning up for rev.cpp

* Reverting spacing changes

* Fix mistake with source loc RAII instantiation

* Fix formatting issues

1 files changed, 1 insertions, 0 deletions

diff --git a/include/slang.h b/include/slang.h
index 3024aa884..3bcdcbba8 100644
--- a/include/slang.h
+++ b/include/slang.h
@@ -852,6 +852,7 @@ extern "C"
             EmitIr,                // bool
             ReportDownstreamTime,  // bool
             ReportPerfBenchmark,   // bool
+            ReportCheckpointIntermediates, // bool
             SkipSPIRVValidation,   // bool
             SourceEmbedStyle,
             SourceEmbedName,