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-rw-r--r--platform/javascript/detect.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/platform/javascript/detect.py b/platform/javascript/detect.py
index 17b31f8d73..22b5f1f87a 100644
--- a/platform/javascript/detect.py
+++ b/platform/javascript/detect.py
@@ -122,12 +122,17 @@ def configure(env):
## Link flags
env.Append(LINKFLAGS=['-s', 'BINARYEN=1'])
+ env.Append(LINKFLAGS=['-s', 'BINARYEN_TRAP_MODE=\'clamp\''])
# Allow increasing memory buffer size during runtime. This is efficient
# when using WebAssembly (in comparison to asm.js) and works well for
# us since we don't know requirements at compile-time.
env.Append(LINKFLAGS=['-s', 'ALLOW_MEMORY_GROWTH=1'])
+ # Since we use both memory growth and MEMFS preloading,
+ # this avoids unecessary copying on start-up.
+ env.Append(LINKFLAGS=['--no-heap-copy'])
+
# This setting just makes WebGL 2 APIs available, it does NOT disable WebGL 1.
env.Append(LINKFLAGS=['-s', 'USE_WEBGL2=1'])