From 9495b338121140d585648d64fb99e8ef7f92f867 Mon Sep 17 00:00:00 2001
From: Thomas Lively <7121787+tlively@users.noreply.github.com>
Date: Fri, 12 Apr 2019 18:27:13 -0700
Subject: Move features from passOptions to Module (#2001)

This allows us to emit a (potentially modified) target features
section and conditionally emit other sections such as the DataCount
section based on the presence of features.
---
 src/ir/memory-utils.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/ir/memory-utils.h')

diff --git a/src/ir/memory-utils.h b/src/ir/memory-utils.h
index 0bad50c5a..fbf1f646c 100644
--- a/src/ir/memory-utils.h
+++ b/src/ir/memory-utils.h
@@ -69,6 +69,12 @@ namespace MemoryUtils {
       return true;
     }
 
+    // Conservatively refuse to change segments if there might be memory.init
+    // and data.drop instructions.
+    if (module.features.hasBulkMemory()) {
+      return false;
+    }
+
     auto isEmpty = [](Memory::Segment& segment) {
       return segment.data.size() == 0;
     };
-- 
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