In juj/wasm_webgpu@4c2600b, I have the following code:

  WGpuRenderPassColorAttachment colorAttachment = {};
  ...
  colorAttachment.loadColor[3] = 0.05;

here loadColor struct member is of type double loadColor[4]. When building with WASM2JS, I see

HEAP32[$1 + 88 >> 2] = -1259857073;
HEAP32[$1 + 92 >> 2] = 1063997057;

getting generated for the double number heap set operation, instead of a

HEAPF64[$1 + 88 >> 3] = 0.05;

I wonder if this is some special case, or if Wasm2JS does not do HEAPF64 assignments?