tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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inline-access.js (976B)

      1 // |jit-test| slow; skip-if: !this.SharedArrayBuffer
      2 //
      3 // This is for testing inlining behavior in the jits.
      4 //
      5 // For Baseline, run:
      6 //    $ IONFLAGS=bl-ic .../js --ion-off --baseline-eager inline-access.js
      7 // Then inspect the output, there should be calls to "GetElem(TypedArray[Int32])",
      8 // "GetProp(NativeObj/NativeGetter 0x...)", and "SetElem_TypedArray stub"
      9 // for the read access, length access, and write access respectively, within f.
     10 //
     11 // For Ion, run:
     12 //    $ IONFLAGS=logs .../js --ion-offthread-compile=off inline-access.js
     13 // Then postprocess with iongraph and verify (by inspecting MIR late in the pipeline)
     14 // that it contains instructions like "typedarraylength", "loadtypedarrayelement",
     15 // and "storetypedarrayelement".
     16 
     17 function f(ta) {
     18    return (ta[2] = ta[0] + ta[1] + ta.length);
     19 }
     20 
     21 var v = new Int32Array(new SharedArrayBuffer(4096));
     22 var sum = 0;
     23 var iter = 1000;
     24 for ( var i=0 ; i < iter ; i++ )
     25    sum += f(v);
     26 assertEq(sum, v.length * iter);