Add a RoundTrip pass (#2516)

This pass writes and reads the module. This shows the effects
of converting to and back from the binary format, and will be
useful in testing dwarf debug support (where we'll need to see
that writing and reading a module preserves debug info properly).

1 files changed, 3 insertions, 0 deletions

diff --git a/src/passes/pass.cpp b/src/passes/pass.cpp
index 4b3021764..5dd39a453 100644
--- a/src/passes/pass.cpp
+++ b/src/passes/pass.cpp
@@ -276,6 +276,9 @@ void PassRegistry::registerPasses() {
                createReReloopPass);
   registerPass(
     "rse", "remove redundant local.sets", createRedundantSetEliminationPass);
+  registerPass("roundtrip",
+               "write the module to binary, then read it",
+               createRoundTripPass);
   registerPass("safe-heap",
                "instrument loads and stores to check for invalid behavior",
                createSafeHeapPass);