wasm2spirv 0.1.0

Compile your WebAssembly programs into SPIR-V shaders
Documentation 
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export fn main(n: usize, alpha: f32, x: [*]const f32, y: [*]f32) void {
    var i = gl_GlobalInvocationID(0);
    const size = gl_NumWorkGroups(0);

    while (i < n) {
        y[i] += alpha * x[i];
        i += size;
    }
}

extern "spir_global" fn gl_GlobalInvocationID(u32) usize;
extern "spir_global" fn gl_NumWorkGroups(u32) usize;