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sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
91 lines
3.4 KiB
JavaScript
91 lines
3.4 KiB
JavaScript
// Copyright 2013 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --allow-natives-syntax --opt --no-always-opt
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deopt_trigger = 0;
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side_effect = 0;
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function test(a, b, c, d, e, v) {
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// This test expects some specific input values.
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assertEquals(10.0, a);
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assertEquals(20.0, b);
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assertEquals(30.0, c);
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assertEquals(40.0, d);
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assertEquals(50.0, e);
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assertEquals(1.5, v);
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// Perform a few double calculations.
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a = a * 0.1;
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b = b * 0.2;
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c = c * 0.3;
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d = d * 0.4;
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e = e * 0.5;
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// Write to a field of a global object. As for any side effect, a HSimulate
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// will be introduced after the instructions to support this. If we deopt
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// later in this function, the execution will resume in full-codegen after
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// this point.
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side_effect++;
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// The following field of the global object will be deleted to force a deopt.
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// If we use type feedback to deopt, then tests ran with --stress-opt will
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// not deopt after a few iteration.
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// If we use %DeoptimizeFunction, all values will be on the frame due to the
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// call and we will not exercise the translation mechanism handling fp
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// registers.
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deopt_trigger = v;
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// Do a few more calculations using the previous values after our deopt point
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// so the floating point registers which hold those values are recorded in the
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// environment and will be used during deoptimization.
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a = a * v;
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b = b * v;
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c = c * v;
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d = d * v;
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e = e * v;
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// Check that we got the expected results.
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assertEquals(1.5, a);
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assertEquals(6, b);
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assertEquals(13.5, c);
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assertEquals(24, d);
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assertEquals(37.5, e);
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}
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test(10.0, 20.0, 30.0, 40.0, 50.0, 1.5);
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test(10.0, 20.0, 30.0, 40.0, 50.0, 1.5);
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%OptimizeFunctionOnNextCall(test);
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test(10.0, 20.0, 30.0, 40.0, 50.0, 1.5);
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assertOptimized(test);
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// By deleting the field we are forcing the code to deopt when the field is
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// read on next execution.
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delete deopt_trigger;
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test(10.0, 20.0, 30.0, 40.0, 50.0, 1.5);
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assertUnoptimized(test);
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