Restore and fix SpillPointers pass (#4570)

We have some possible use cases for this pass, and so are restoring
it.

This reverts the removal in #3261, fixes compile errors in internal API
changes since then, and flips the direction of the stack for the
wasm backend.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/passes/passes.h b/src/passes/passes.h
index 2c73ed91e..c30867c20 100644
--- a/src/passes/passes.h
+++ b/src/passes/passes.h
@@ -129,6 +129,7 @@ Pass* createStripProducersPass();
 Pass* createStripTargetFeaturesPass();
 Pass* createSouperifyPass();
 Pass* createSouperifySingleUsePass();
+Pass* createSpillPointersPass();
 Pass* createStubUnsupportedJSOpsPass();
 Pass* createSSAifyPass();
 Pass* createSSAifyNoMergePass();