dart::CheckStackOverflowElimination Class Reference

#include <redundancy_elimination.h>

Inheritance diagram for dart::CheckStackOverflowElimination:

Static Public Member Functions
static void	EliminateStackOverflow (FlowGraph *graph)

Detailed Description

Definition at line 163 of file redundancy_elimination.h.

Member Function Documentation

EliminateStackOverflow()

void dart::CheckStackOverflowElimination::EliminateStackOverflow ( FlowGraph *  graph )

static

Definition at line 4555 of file redundancy_elimination.cc.

                                                                           {
  const bool should_remove_all = IsMarkedWithNoInterrupts(graph->function());
  if (should_remove_all) {
    for (auto entry : graph->reverse_postorder()) {
      for (ForwardInstructionIterator it(entry); !it.Done(); it.Advance()) {
        if (it.Current()->IsCheckStackOverflow()) {
          it.RemoveCurrentFromGraph();
        }
      }
    }
    return;
  }
 
  CheckStackOverflowInstr* first_stack_overflow_instr = nullptr;
  for (auto entry : graph->reverse_postorder()) {
    for (ForwardInstructionIterator it(entry); !it.Done(); it.Advance()) {
      Instruction* current = it.Current();
 
      if (CheckStackOverflowInstr* instr = current->AsCheckStackOverflow()) {
        if (first_stack_overflow_instr == nullptr) {
          first_stack_overflow_instr = instr;
          ASSERT(!first_stack_overflow_instr->in_loop());
        }
        continue;
      }
 
      if (current->IsBranch()) {
        current = current->AsBranch()->comparison();
      }
 
      if (current->HasUnknownSideEffects()) {
        return;
      }
    }
  }
 
  if (first_stack_overflow_instr != nullptr) {
    first_stack_overflow_instr->RemoveFromGraph();
  }
}

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The documentation for this class was generated from the following files:

• third_party/dart-lang/sdk/runtime/vm/compiler/backend/redundancy_elimination.h
• third_party/dart-lang/sdk/runtime/vm/compiler/backend/redundancy_elimination.cc