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// Copyright 2019 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.
// Serializer tests don't make sense in lite mode, as it doesn't gather
// IC feedback.
#ifndef V8_LITE_MODE
#include "test/cctest/compiler/serializer-tester.h"
#include "src/api-inl.h"
#include "src/compiler/serializer-for-background-compilation.h"
#include "src/compiler/zone-stats.h"
#include "src/optimized-compilation-info.h"
#include "src/zone/zone.h"
namespace v8 {
namespace internal {
namespace compiler {
SerializerTester::SerializerTester(const char* source)
: canonical_(main_isolate()) {
// The tests only make sense in the context of concurrent compilation.
FLAG_concurrent_inlining = true;
// The tests don't make sense when optimizations are turned off.
FLAG_opt = true;
// We need the IC to feed it to the serializer.
FLAG_use_ic = true;
// We need manual control over when a given function is optimized.
FLAG_always_opt = false;
// We need allocation of executable memory for the compilation.
FLAG_jitless = false;
std::string function_string = "(function() { ";
function_string += source;
function_string += " })();";
Handle<JSFunction> function = Handle<JSFunction>::cast(v8::Utils::OpenHandle(
*v8::Local<v8::Function>::Cast(CompileRun(function_string.c_str()))));
uint32_t flags = i::OptimizedCompilationInfo::kInliningEnabled |
i::OptimizedCompilationInfo::kFunctionContextSpecializing |
i::OptimizedCompilationInfo::kAccessorInliningEnabled |
i::OptimizedCompilationInfo::kLoopPeelingEnabled |
i::OptimizedCompilationInfo::kBailoutOnUninitialized |
i::OptimizedCompilationInfo::kAllocationFoldingEnabled |
i::OptimizedCompilationInfo::kSplittingEnabled |
i::OptimizedCompilationInfo::kAnalyzeEnvironmentLiveness;
Optimize(function, main_zone(), main_isolate(), flags, &broker_);
function_ = JSFunctionRef(broker_, function);
}
TEST(SerializeEmptyFunction) {
SerializerTester tester("function f() {}; return f;");
CHECK(tester.function().IsSerializedForCompilation());
}
// This helper function allows for testing weather an inlinee candidate
// was properly serialized. It expects that the top-level function (that is
// run through the SerializerTester) will return its inlinee candidate.
void CheckForSerializedInlinee(const char* source, int argc = 0,
Handle<Object> argv[] = {}) {
SerializerTester tester(source);
JSFunctionRef f = tester.function();
CHECK(f.IsSerializedForCompilation());
MaybeHandle<Object> g_obj = Execution::Call(
tester.isolate(), tester.function().object(),
tester.isolate()->factory()->undefined_value(), argc, argv);
Handle<Object> g;
CHECK(g_obj.ToHandle(&g));
Handle<JSFunction> g_func = Handle<JSFunction>::cast(g);
SharedFunctionInfoRef g_sfi(tester.broker(),
handle(g_func->shared(), tester.isolate()));
FeedbackVectorRef g_fv(tester.broker(),
handle(g_func->feedback_vector(), tester.isolate()));
CHECK(g_sfi.IsSerializedForCompilation(g_fv));
}
TEST(SerializeInlinedClosure) {
CheckForSerializedInlinee(
"function f() {"
" return (function g(){ return g; })();"
"}; f(); return f;");
}
TEST(SerializeInlinedFunction) {
CheckForSerializedInlinee(
"function g() {};"
"function f() {"
" g(); return g;"
"}; f(); return f;");
}
TEST(SerializeCallUndefinedReceiver) {
CheckForSerializedInlinee(
"function g(a,b,c) {};"
"function f() {"
" g(1,2,3); return g;"
"}; f(); return f;");
}
TEST(SerializeCallUndefinedReceiver2) {
CheckForSerializedInlinee(
"function g(a,b) {};"
"function f() {"
" g(1,2); return g;"
"}; f(); return f;");
}
TEST(SerializeCallProperty) {
CheckForSerializedInlinee(
"let obj = {"
" g: function g(a,b,c) {}"
"};"
"function f() {"
" obj.g(1,2,3); return obj.g;"
"}; f(); return f;");
}
TEST(SerializeCallProperty2) {
CheckForSerializedInlinee(
"let obj = {"
" g: function g(a,b) {}"
"};"
"function f() {"
" obj.g(1,2); return obj.g;"
"}; f(); return f;");
}
TEST(SerializeCallAnyReceiver) {
CheckForSerializedInlinee(
"let obj = {"
" g: function g() {}"
"};"
"function f() {"
" with(obj) {"
" g(); return g;"
" };"
"};"
"f(); return f;");
}
TEST(SerializeCallWithSpread) {
CheckForSerializedInlinee(
"function g(args) {};"
"const arr = [1,2,3];"
"function f() {"
" g(...arr); return g;"
"}; f(); return f;");
}
// The following test causes the CallIC of `g` to turn megamorphic,
// thus allowing us to test if we forward arguments hints (`callee` in this
// example) and correctly serialize the inlining candidate `j`.
TEST(SerializeCallArguments) {
CheckForSerializedInlinee(
"function g(callee) { callee(); };"
"function h() {};"
"function i() {};"
"g(h); g(i);"
"function f() {"
" function j() {};"
" g(j);"
" return j;"
"}; f(); return f;");
}
TEST(SerializeConstruct) {
CheckForSerializedInlinee(
"function g() {};"
"function f() {"
" new g(); return g;"
"}; f(); return f;");
}
TEST(SerializeConstructWithSpread) {
CheckForSerializedInlinee(
"function g(a, b, c) {};"
"const arr = [1, 2];"
"function f() {"
" new g(0, ...arr); return g;"
"}; f(); return f;");
}
TEST(SerializeConditionalJump) {
CheckForSerializedInlinee(
"function g(callee) { callee(); };"
"function h() {};"
"function i() {};"
"let a = true;"
"g(h); g(i);"
"function f() {"
" function q() {};"
" if (a) g(q);"
" return q;"
"}; f(); return f;");
}
TEST(SerializeUnconditionalJump) {
CheckForSerializedInlinee(
"function g(callee) { callee(); };"
"function h() {};"
"function i() {};"
"let a = false;"
"g(h); g(i);"
"function f() {"
" function p() {};"
" function q() {};"
" if (a) g(q);"
" else g(p);"
" return p;"
"}; f(); return f;");
}
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_LITE_MODE
|
