066e2a2d79
We somehow forgot to thread through the VectorSlotPair for the CALL_IC based speculation feedback to CheckedTaggedToTaggedPointer. This was showing for example with `String#concat()` where we ended up with an endless deoptimization loop if the parameter was a Smi. Bug: v8:8913 Change-Id: I84d90403f6fada9b435d4eb71c689edc3c34dc86 Reviewed-on: https://chromium-review.googlesource.com/c/1488770 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Mathias Bynens <mathias@chromium.org> Reviewed-by: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#59871}
16 lines
373 B
JavaScript
16 lines
373 B
JavaScript
// Copyright 2019 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax --opt
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function foo(t) { return 'a'.concat(t); }
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foo(1);
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foo(1);
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%OptimizeFunctionOnNextCall(foo);
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foo(1);
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%OptimizeFunctionOnNextCall(foo);
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foo(1);
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assertOptimized(foo);
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