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I'm compiling a sample Heaps.io project with DX12 backend to HL/C target.
Compiler throws "Error: Don't know how to compare array and array (hlc)" message.

My investigation has shown the following:

The "flushPipeline" method of heaps/h3d/DX12Driver.hx has the following code:

	function flushPipeline() {
		if( !needPipelineFlush ) return;
		needPipelineFlush = false;
		var signature = pipelineSignature;
		var signatureSize = PSIGN_LAYOUT + currentShader.inputCount;
		adlerOut.setI32(0, 0);
		hl.Format.digest(adlerOut, signature, signatureSize, 3);
		var hash = adlerOut.getI32(0);
		var pipes = currentShader.pipelines.get(hash);
		if( pipes == null ) {
			pipes = new hl.NativeArray(1);
			currentShader.pipelines.set(hash, pipes);
		}

And something between:

var pipes = currentShader.pipelines.get(hash);
if( pipes == null ) {

makes HL/C generate the following C code:

	r36 = r0->currentShader;
	if( r36 == NULL ) hl_null_access();
	r35 = r36->pipelines;
	if( r35 == NULL ) hl_null_access();
	r37 = r32;
	r34 = haxe_ds_IntMap_get(r35,r37);
	r38 = (varray*)r34;
	r39 = (varray*)hl_dyn_castp(&r34,&t$_dyn,&t$_array);
	### WRONG 0 ### r38 == r39 -> label$6a3cd68_69_40 ###;
	hl_assert();
	label$6a3cd68_69_40:
	r40 = r38;
	r43 = r40;
	if( r43 ) goto label$6a3cd68_69_54;

The ### WRONG ### part is my modification to debug this as the haxe compiler actually fails at this point because it can't generate comparison statement for 2 arrays.