3 files changed, 25 insertions, 0 deletions
diff --git a/src/binaryen-c.cpp b/src/binaryen-c.cpp
index 2260a93b1..7c826f0f2 100644
--- a/src/binaryen-c.cpp
+++ b/src/binaryen-c.cpp
@@ -3798,6 +3798,14 @@ void BinaryenSetLowMemoryUnused(bool on) {
   globalPassOptions.lowMemoryUnused = on != 0;
 }
 
+bool BinaryenGetZeroFilledMemory(void) {
+  return globalPassOptions.zeroFilledMemory;
+}
+
+void BinaryenSetZeroFilledMemory(bool on) {
+  globalPassOptions.zeroFilledMemory = on != 0;
+}
+
 bool BinaryenGetFastMath(void) { return globalPassOptions.fastMath; }
 
 void BinaryenSetFastMath(bool value) { globalPassOptions.fastMath = value; }
diff --git a/src/binaryen-c.h b/src/binaryen-c.h
index 8609496d0..08cf12b90 100644
--- a/src/binaryen-c.h
+++ b/src/binaryen-c.h
@@ -2284,6 +2284,13 @@ BINARYEN_API bool BinaryenGetLowMemoryUnused(void);
 // when optimizing. Applies to all modules, globally.
 BINARYEN_API void BinaryenSetLowMemoryUnused(bool on);
 
+// Gets whether to assume that an imported memory is zero-initialized.
+BINARYEN_API bool BinaryenGetZeroFilledMemory(void);
+
+// Enables or disables whether to assume that an imported memory is
+// zero-initialized.
+BINARYEN_API void BinaryenSetZeroFilledMemory(bool on);
+
 // Gets whether fast math optimizations are enabled, ignoring for example
 // corner cases of floating-point math like NaN changes.
 // Applies to all modules, globally.
diff --git a/src/js/binaryen.js-post.js b/src/js/binaryen.js-post.js
index d86cb07af..8e41b4e7c 100644
--- a/src/js/binaryen.js-post.js
+++ b/src/js/binaryen.js-post.js
@@ -3303,6 +3303,16 @@ Module['setLowMemoryUnused'] = function(on) {
   Module['_BinaryenSetLowMemoryUnused'](on);
 };
 
+// Gets whether that an imported memory will be zero-initialized speculation.
+Module['getZeroFilledMemory'] = function() {
+  return Boolean(Module['_BinaryenGetZeroFilledMemory']());
+};
+
+// Enables or disables whether that an imported memory will be
+// zero-initialized speculation.
+Module['setZeroFilledMemory'] = function(on) {
+  Module['_BinaryenSetZeroFilledMemory'](on);
+};
 // Gets whether fast math optimizations are enabled, ignoring for example
 // corner cases of floating-point math like NaN changes.
 Module['getFastMath'] = function() {