f2d85ff163
Instruction selector computes the range of case statement labels to choose between a table or lookup based switch. We need to special case this when there are no case statements. Bug: chromium:794825 Change-Id: I46ef57d17f5e2b99a3570f7f3c4ff06e75d78fab Reviewed-on: https://chromium-review.googlesource.com/830013 Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Commit-Queue: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#50153}
56 lines
2.1 KiB
JavaScript
56 lines
2.1 KiB
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are
|
|
// met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following
|
|
// disclaimer in the documentation and/or other materials provided
|
|
// with the distribution.
|
|
// * Neither the name of Google Inc. nor the names of its
|
|
// contributors may be used to endorse or promote products derived
|
|
// from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
// Flags: --allow-natives-syntax --opt
|
|
|
|
|
|
function* opt() {
|
|
// The for loop to generate a SwitchOnSmiNoFeedback with holes
|
|
// at the end since yield will be eliminated.
|
|
for (;;)
|
|
if (true) {
|
|
} else {
|
|
yield;
|
|
}
|
|
|
|
// Another loop to force more holes in the constant pool to
|
|
// verify if bounds checks works when iterating over the jump
|
|
// table.
|
|
for (;;)
|
|
if (true) {
|
|
} else {
|
|
yield;
|
|
}
|
|
}
|
|
|
|
opt();
|
|
// Optimize function to trigger the iteration over jump
|
|
// table.
|
|
%OptimizeFunctionOnNextCall(opt);
|
|
opt();
|
|
assertOptimized(opt);
|