v8/test/mjsunit/wasm/externref-liftoff.js

// Copyright 2020 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Flags: --expose-wasm --expose-gc --liftoff --no-wasm-tier-up
// Flags: --allow-natives-syntax

d8.file.execute("test/mjsunit/wasm/externref.js");
Reland "[wasm][liftoff] Emit safepoints for externref values on the stack" The emitted safepoint entries had the wrong size, because it did not contain StandardFrameConstants::kFixedFrameSizeAboveFp. The code still worked because the indices of encoded in the entries where too low by StandardFrameConstants::kFixedFrameSizeAboveFp and thereby corrected the invalid size. It worked as follows: First the stack_slots_size gets calculated from the safepoint entry. Then the position of a stack slot was "frame_header_base + stack_slots_size - index * pointer_size", where "index" is what is encoded in the safepoint map. Because of the incorrect encoding, both stack_slot_size and index were too low by StandardFrameConstants::kFixedFrameSizeAboveFp. Therefore the errors in both values eliminated each other, making the end result correct. With --print-code, the safepoint entry size was also read, and it crashed because the encoded value was too low. The reland fixes the indices. Original message: With this CL we emit safepoint maps for externref values on the Liftoff value stack. With that there is support for externref parameters and locals in Liftoff, as well as for intermediate values of type externref. R=thibaudm@chromium.org Bug: v8:7581 Change-Id: I88444e57745d7b9fe8f1630e904d49736fa9d720 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2398531 Commit-Queue: Andreas Haas <ahaas@chromium.org> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org> Cr-Commit-Position: refs/heads/master@{#69786} 2020-09-09 10:33:44 +00:00			`// Copyright 2020 the V8 project authors. All rights reserved.`
			`// Use of this source code is governed by a BSD-style license that can be`
			`// found in the LICENSE file.`

[wasm] Remove --experimental-wasm-reftypes flag Since the reftypes proposal has shipped, we remove the respective flag and the code that handled its absence. We maintain a WasmFeature for reftypes for feature detection purposes. We remove the flag declaration from tests, and adapt some tests that make no sense without the flag. Bug: v8:7581 Change-Id: Icf2f8d0feae8f30ec68d5560f1e7ee5959481483 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3329781 Reviewed-by: Andreas Haas <ahaas@chromium.org> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org> Cr-Commit-Position: refs/heads/main@{#78351} 2021-12-13 13:35:47 +00:00			`// Flags: --expose-wasm --expose-gc --liftoff --no-wasm-tier-up`
[wasm][liftoff] Define safepoints for stack checks Safepoints encode which slots in a stack frame store references when a function is called. Safepoints for normal function calls in Liftoff were already implemented before. With this CL, a safepoint for the runtime call in a stack check is emitted. R=thibaudm@chromium.org, clemensb@chromium.org Bug: v8:7581 Change-Id: Iacb8b15559502adb7622935edb0cfa7ca03d634e Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2563266 Commit-Queue: Andreas Haas <ahaas@chromium.org> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org> Reviewed-by: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/master@{#71494} 2020-11-30 14:33:24 +00:00			`// Flags: --allow-natives-syntax`
Reland "[wasm][liftoff] Emit safepoints for externref values on the stack" The emitted safepoint entries had the wrong size, because it did not contain StandardFrameConstants::kFixedFrameSizeAboveFp. The code still worked because the indices of encoded in the entries where too low by StandardFrameConstants::kFixedFrameSizeAboveFp and thereby corrected the invalid size. It worked as follows: First the stack_slots_size gets calculated from the safepoint entry. Then the position of a stack slot was "frame_header_base + stack_slots_size - index * pointer_size", where "index" is what is encoded in the safepoint map. Because of the incorrect encoding, both stack_slot_size and index were too low by StandardFrameConstants::kFixedFrameSizeAboveFp. Therefore the errors in both values eliminated each other, making the end result correct. With --print-code, the safepoint entry size was also read, and it crashed because the encoded value was too low. The reland fixes the indices. Original message: With this CL we emit safepoint maps for externref values on the Liftoff value stack. With that there is support for externref parameters and locals in Liftoff, as well as for intermediate values of type externref. R=thibaudm@chromium.org Bug: v8:7581 Change-Id: I88444e57745d7b9fe8f1630e904d49736fa9d720 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2398531 Commit-Queue: Andreas Haas <ahaas@chromium.org> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org> Cr-Commit-Position: refs/heads/master@{#69786} 2020-09-09 10:33:44 +00:00
[d8][mjsunit][tools] Improve d8 file API - Add d8.file.read() and d8.file.execute() helpers - Change tools and tests to use new d8.file helper - Unify error throwing in v8::Shell::ReadFile Change-Id: I5ef4cb27f217508a367106f01e872a4059d5e399 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2928505 Commit-Queue: Camillo Bruni <cbruni@chromium.org> Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Marja Hölttä <marja@chromium.org> Cr-Commit-Position: refs/heads/master@{#74883} 2021-06-01 12:46:36 +00:00			`d8.file.execute("test/mjsunit/wasm/externref.js");`