0f3036ce09
The Sub macro sometimes needs a scratch register when the 2nd operand is too large to be encoded in the instruction. The prologue was already reserving 2 scratch registers, which made Sub crash on a DCHECK when trying to reserve one more scratch register. Bug: v8:7700 Change-Id: I995689b8b16e3ef216641f0b6cadbf58f7f3740b Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4128554 Commit-Queue: Darius Mercadier <dmercadier@chromium.org> Reviewed-by: Jakob Linke <jgruber@chromium.org> Cr-Commit-Position: refs/heads/main@{#85029}
47 lines
1.9 KiB
JavaScript
47 lines
1.9 KiB
JavaScript
// Copyright 2022 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 --maglev
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function foo(
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
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x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x
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) { }
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%PrepareFunctionForOptimization(foo);
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foo();
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foo();
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%OptimizeMaglevOnNextCall(foo);
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foo();
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