de50785ed5
This reverts commit 860fcb1bd2.
Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux%20-%20arm%20-%20sim%20-%20lite/13831/overview
Original change's description:
> Faster JS-to-Wasm calls
>
> This replaces https://chromium-review.googlesource.com/c/v8/v8/+/2376165/.
>
> Currently JS-to-Wasm calls go through a wrapper/trampoline, built on
> the basis of the signature of a Wasm function to call, and whose task
> is to:
> - set "thread_in_wasm_flag" to true
> - convert the arguments from tagged types into Wasm native types
> - calculate the address of the Wasm function to call and call it
> - convert back the result from Wasm native types into tagged types
> - reset "thread_in_wasm_flag" to false.
>
> This CL tries to improve the performance of JS-to-Wasm calls by
> inlining the code of the JS-to-Wasm wrappers in the call site.
>
> It introduces a new IR operand, JSWasmCall, which replaces JSCall for
> this kind of calls. A 'JSWasmCall' node is associated to
> WasmCallParameters, which contain information about the signature of
> the Wasm function to call.
>
> WasmWrapperGraphBuilder::BuildJSToWasmWrapper is modified to avoid generating code to convert the types for the arguments
> of the Wasm function, when the conversion is not necessary.
> The actual inlining of the graph generated for this wrapper happens in
> the simplified-lowering phase.
>
> A new builtin, JSToWasmLazyDeoptContinuation, is introduced to manage
> lazy deoptimizations that can happen if the Wasm function callee calls
> back some JS code that invalidates the compiled JS caller function.
>
> Bug: v8:11092
> Change-Id: I3174c1c1f59b39107b333d1929ecc0584486b8ad
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2557538
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
> Reviewed-by: Georg Neis (ooo until January 5) <neis@chromium.org>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Reviewed-by: Maya Lekova <mslekova@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Commit-Queue: Paolo Severini <paolosev@microsoft.com>
> Cr-Commit-Position: refs/heads/master@{#71824}
TBR=neis@chromium.org,ahaas@chromium.org,jgruber@chromium.org,tebbi@chromium.org,ishell@chromium.org,mslekova@chromium.org,nicohartmann@chromium.org,paolosev@microsoft.com
Change-Id: I214cbdee74c1a2aaad907ffc84662ed25631983e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:11092
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2595438
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71825}
56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
// Copyright 2015 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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#ifndef V8_TEST_CCTEST_TEST_API_H_
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#define V8_TEST_CCTEST_TEST_API_H_
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#include "src/init/v8.h"
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#include "src/api/api.h"
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#include "src/execution/isolate.h"
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#include "src/execution/vm-state.h"
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#include "test/cctest/cctest.h"
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template <typename T>
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static void CheckReturnValue(const T& t, i::Address callback) {
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v8::ReturnValue<v8::Value> rv = t.GetReturnValue();
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i::FullObjectSlot o(*reinterpret_cast<i::Address*>(&rv));
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CHECK_EQ(CcTest::isolate(), t.GetIsolate());
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(t.GetIsolate());
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CHECK_EQ(t.GetIsolate(), rv.GetIsolate());
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CHECK((*o).IsTheHole(isolate) || (*o).IsUndefined(isolate));
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// Verify reset
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bool is_runtime = (*o).IsTheHole(isolate);
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if (is_runtime) {
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CHECK(rv.Get()->IsUndefined());
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} else {
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i::Handle<i::Object> v = v8::Utils::OpenHandle(*rv.Get());
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CHECK_EQ(*v, *o);
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}
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rv.Set(true);
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CHECK(!(*o).IsTheHole(isolate) && !(*o).IsUndefined(isolate));
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rv.Set(v8::Local<v8::Object>());
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CHECK((*o).IsTheHole(isolate) || (*o).IsUndefined(isolate));
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CHECK_EQ(is_runtime, (*o).IsTheHole(isolate));
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// If CPU profiler is active check that when API callback is invoked
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// VMState is set to EXTERNAL.
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if (isolate->is_profiling()) {
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CHECK_EQ(v8::EXTERNAL, isolate->current_vm_state());
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CHECK(isolate->external_callback_scope());
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CHECK_EQ(callback, isolate->external_callback_scope()->callback());
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}
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}
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template <typename T>
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static void CheckInternalFieldsAreZero(v8::Local<T> value) {
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CHECK_EQ(T::kInternalFieldCount, value->InternalFieldCount());
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for (int i = 0; i < value->InternalFieldCount(); i++) {
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CHECK_EQ(0, value->GetInternalField(i)
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->Int32Value(CcTest::isolate()->GetCurrentContext())
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.FromJust());
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}
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}
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#endif // V8_TEST_CCTEST_TEST_API_H_
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