Samir Jindel
772c9bb5f3
This change has been adjusted to account for the recent fix to Internal_prependTypeArguments. Reviewed-on: https://dart-review.googlesource.com/50980 Commit-Queue: Samir Jindel <sjindel@google.com> Reviewed-by: Régis Crelier <regis@google.com> Change-Id: I434a42578b91f0930b088c4d264d882c3ef5b4a3 Reviewed-on: https://dart-review.googlesource.com/53801
93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_COMPILER_FRONTEND_PROLOGUE_BUILDER_H_
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#define RUNTIME_VM_COMPILER_FRONTEND_PROLOGUE_BUILDER_H_
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#if !defined(DART_PRECOMPILED_RUNTIME)
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#include "vm/compiler/frontend/kernel_to_il.h"
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namespace dart {
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namespace kernel {
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// Responsible for building IR code for prologues of functions.
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//
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// This code handles initialization of local variables which the
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// prologue needs to setup, including initialization of the:
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//
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// * current context variable, from the passed closure object
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// * function_type_arguments variable, from the stack above fp
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// * raw parameter variables, from the stack above fp
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//
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// if needed.
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//
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// Furthermore it performs all necessary checks which could lead into a
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// no-such-method bailout, including check that:
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//
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// * the number of passed positional arguments is correct
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// * the names of passed named arguments are correct
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// * the number of function type arguments is correct
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//
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// if needed.
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//
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// Most of these things are done by interpreting the caller-supplied arguments
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// descriptor.
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class PrologueBuilder : public BaseFlowGraphBuilder {
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public:
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PrologueBuilder(const ParsedFunction* parsed_function,
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intptr_t last_used_id,
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bool compiling_for_osr,
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bool is_inlining)
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: BaseFlowGraphBuilder(parsed_function, last_used_id),
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compiling_for_osr_(compiling_for_osr),
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is_inlining_(is_inlining) {}
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BlockEntryInstr* BuildPrologue(BlockEntryInstr* entry,
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PrologueInfo* prologue_info);
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intptr_t last_used_block_id() const { return last_used_block_id_; }
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private:
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Fragment BuildTypeArgumentsLengthCheck(bool strong,
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JoinEntryInstr* nsm,
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bool expect_type_args);
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Fragment BuildOptionalParameterHandling(bool strong, JoinEntryInstr* nsm);
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Fragment BuildFixedParameterLengthChecks(bool strong, JoinEntryInstr* nsm);
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Fragment BuildClosureContextHandling();
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Fragment BuildTypeArgumentsHandling(JoinEntryInstr* nsm);
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LocalVariable* ParameterVariable(intptr_t index) {
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return parsed_function_->RawParameterVariable(index);
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}
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const Instance& DefaultParameterValueAt(intptr_t i) {
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if (parsed_function_->default_parameter_values() != NULL) {
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return parsed_function_->DefaultParameterValueAt(i);
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}
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ASSERT(parsed_function_->function().kind() ==
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RawFunction::kNoSuchMethodDispatcher);
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return Instance::null_instance();
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}
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void SortOptionalNamedParametersInto(LocalVariable** opt_param,
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int* opt_param_position,
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int num_fixed_params,
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int num_params);
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bool compiling_for_osr_;
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bool is_inlining_;
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};
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} // namespace kernel
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} // namespace dart
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#endif // !defined(DART_PRECOMPILED_RUNTIME)
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#endif // RUNTIME_VM_COMPILER_FRONTEND_PROLOGUE_BUILDER_H_
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