Refactor expression runner so it can be used via the C and JS APIs (#2702)

Refactors most of the precompute pass's expression runner into its
base class so it can also be used via the C and JS APIs. Also adds
the option to populate the runner with known constant local and global
values upfront, and remembers assigned intermediate values as well
as traversing into functions if requested.

1 files changed, 1 insertions, 0 deletions

diff --git a/test/binaryen.js/custom-section.js.txt b/test/binaryen.js/custom-section.js.txt
index 063ef9dde..7c68582f1 100644
--- a/test/binaryen.js/custom-section.js.txt
+++ b/test/binaryen.js/custom-section.js.txt
@@ -10,6 +10,7 @@ int main() {
   std::map<size_t, BinaryenEventRef> events;
   std::map<size_t, BinaryenExportRef> exports;
   std::map<size_t, RelooperBlockRef> relooperBlocks;
+  std::map<size_t, ExpressionRunnerRef> expressionRunners;
   BinaryenModuleRef the_module = NULL;
   RelooperRef the_relooper = NULL;
   the_module = BinaryenModuleCreate();