tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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ion-lazy-tables.js (2004B)

      1 // |jit-test| skip-if: !getJitCompilerOptions()['baseline.enable']
      2 // These tests need at least baseline to make sense.
      3 
      4 const { assertStackTrace, startProfiling, endProfiling, assertEqPreciseStacks } = WasmHelpers;
      5 
      6 const options = getJitCompilerOptions();
      7 const TRIGGER = options['baseline.warmup.trigger'] + 10;
      8 const ITER = 2 * TRIGGER;
      9 const EXCEPTION_ITER = TRIGGER + 5;
     10 
     11 const SLOW_ENTRY_STACK = ['', '!>', '0,!>', '!>', ''];
     12 const FAST_ENTRY_STACK = ['', '>', '0,>', '>', ''];
     13 const INLINED_CALL_STACK = ['', '0', ''];
     14 const EXPECTED_STACKS = [SLOW_ENTRY_STACK, FAST_ENTRY_STACK, INLINED_CALL_STACK];
     15 
     16 function main() {
     17    var { table } = wasmEvalText(`(module
     18        (func (param i32) (param i32) (result i32)
     19         local.get 0
     20         local.get 1
     21         i32.add
     22        )
     23        (table (export "table") 10 funcref)
     24        (elem (i32.const 0) 0)
     25    )`).exports;
     26 
     27    for (var i = 0; i < ITER; i++) {
     28        startProfiling();
     29        assertEq(table.get(0)(i, i+1), i*2+1);
     30        assertEqPreciseStacks(endProfiling(), EXPECTED_STACKS);
     31    }
     32 }
     33 
     34 function withTier2() {
     35    setJitCompilerOption('wasm.delay-tier2', 1);
     36 
     37    var module = new WebAssembly.Module(wasmTextToBinary(`(module
     38        (func (param i32) (param i32) (result i32)
     39         local.get 0
     40         local.get 1
     41         i32.add
     42        )
     43        (table (export "table") 10 funcref)
     44        (elem (i32.const 0) 0)
     45    )`));
     46    var { table } = new WebAssembly.Instance(module).exports;
     47 
     48    let i = 0;
     49    do {
     50        i++;
     51        startProfiling();
     52        assertEq(table.get(0)(i, i+1), i*2+1);
     53        assertEqPreciseStacks(endProfiling(), EXPECTED_STACKS);
     54    } while (!wasmHasTier2CompilationCompleted(module));
     55 
     56    for (i = 0; i < ITER; i++) {
     57        startProfiling();
     58        assertEq(table.get(0)(i, i+1), i*2+1);
     59        assertEqPreciseStacks(endProfiling(), EXPECTED_STACKS);
     60    }
     61 
     62    setJitCompilerOption('wasm.delay-tier2', 0);
     63 }
     64 
     65 enableGeckoProfiling();
     66 main();
     67 withTier2();
     68 disableGeckoProfiling();