inline-add2.js - mozsearch

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// |jit-test| slow;

//

// Like inline-add, but with Uint32Array, which is a special case

// because the value is representable only as a Number.  All this

// tests is that the Uint32 path is being triggered.

//

// This is intended to be run manually with IONFLAGS=logs and

// postprocessing by iongraph to verify manually (by inspecting the

// MIR) that:

//

//  - the add operation is inlined as it should be, with

//    a return type 'Double'

//  - loads and stores are not moved across the add

//

// Be sure to run with --ion-eager --ion-offthread-compile=off.

function add(ta) {

    return Atomics.add(ta, 86, 6);

var sab = new SharedArrayBuffer(4096);

var ia = new Uint32Array(sab);

for ( var i=0, limit=ia.length ; i < limit ; i++ )

    ia[i] = 0xdeadbeef;		// Important: Not an int32-capable value

var v = 0;

for ( var i=0 ; i < 1000 ; i++ )

    v += add(ia);

//print(v);