inline-access.js - mozsearch

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// |jit-test| slow; skip-if: !this.SharedArrayBuffer

//

// This is for testing inlining behavior in the jits.

//

// For Baseline, run:

//    $ IONFLAGS=bl-ic .../js --ion-off --baseline-eager inline-access.js

// Then inspect the output, there should be calls to "GetElem(TypedArray[Int32])",

// "GetProp(NativeObj/NativeGetter 0x...)", and "SetElem_TypedArray stub"

// for the read access, length access, and write access respectively, within f.

//

// For Ion, run:

//    $ IONFLAGS=logs .../js --ion-offthread-compile=off inline-access.js

// Then postprocess with iongraph and verify (by inspecting MIR late in the pipeline)

// that it contains instructions like "typedarraylength", "loadtypedarrayelement",

// and "storetypedarrayelement".

function f(ta) {

    return (ta[2] = ta[0] + ta[1] + ta.length);

var v = new Int32Array(new SharedArrayBuffer(4096));

var sum = 0;

var iter = 1000;

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

    sum += f(v);

assertEq(sum, v.length * iter);