Revert "Revert "Implement on-stack replacement for arm/arm64/x86/x86_64.""

This reverts commit bd89a5c556324062b7d841843b039392e84cfaf4.

Change-Id: I08d190431520baa7fcec8fbdb444519f25ac8d44

1 files changed, 0 insertions, 68 deletions

diff --git a/compiler/optimizing/builder.cc b/compiler/optimizing/builder.cc
index c7430e7eb6..8d77daf183 100644
--- a/compiler/optimizing/builder.cc
+++ b/compiler/optimizing/builder.cc
@@ -72,74 +72,6 @@ class Temporaries : public ValueObject {
   size_t index_;
 };
 
-class SwitchTable : public ValueObject {
- public:
-  SwitchTable(const Instruction& instruction, uint32_t dex_pc, bool sparse)
-      : instruction_(instruction), dex_pc_(dex_pc), sparse_(sparse) {
-    int32_t table_offset = instruction.VRegB_31t();
-    const uint16_t* table = reinterpret_cast<const uint16_t*>(&instruction) + table_offset;
-    if (sparse) {
-      CHECK_EQ(table[0], static_cast<uint16_t>(Instruction::kSparseSwitchSignature));
-    } else {
-      CHECK_EQ(table[0], static_cast<uint16_t>(Instruction::kPackedSwitchSignature));
-    }
-    num_entries_ = table[1];
-    values_ = reinterpret_cast<const int32_t*>(&table[2]);
-  }
-
-  uint16_t GetNumEntries() const {
-    return num_entries_;
-  }
-
-  void CheckIndex(size_t index) const {
-    if (sparse_) {
-      // In a sparse table, we have num_entries_ keys and num_entries_ values, in that order.
-      DCHECK_LT(index, 2 * static_cast<size_t>(num_entries_));
-    } else {
-      // In a packed table, we have the starting key and num_entries_ values.
-      DCHECK_LT(index, 1 + static_cast<size_t>(num_entries_));
-    }
-  }
-
-  int32_t GetEntryAt(size_t index) const {
-    CheckIndex(index);
-    return values_[index];
-  }
-
-  uint32_t GetDexPcForIndex(size_t index) const {
-    CheckIndex(index);
-    return dex_pc_ +
-        (reinterpret_cast<const int16_t*>(values_ + index) -
-         reinterpret_cast<const int16_t*>(&instruction_));
-  }
-
-  // Index of the first value in the table.
-  size_t GetFirstValueIndex() const {
-    if (sparse_) {
-      // In a sparse table, we have num_entries_ keys and num_entries_ values, in that order.
-      return num_entries_;
-    } else {
-      // In a packed table, we have the starting key and num_entries_ values.
-      return 1;
-    }
-  }
-
- private:
-  const Instruction& instruction_;
-  const uint32_t dex_pc_;
-
-  // Whether this is a sparse-switch table (or a packed-switch one).
-  const bool sparse_;
-
-  // This can't be const as it needs to be computed off of the given instruction, and complicated
-  // expressions in the initializer list seemed very ugly.
-  uint16_t num_entries_;
-
-  const int32_t* values_;
-
-  DISALLOW_COPY_AND_ASSIGN(SwitchTable);
-};
-
 void HGraphBuilder::InitializeLocals(uint16_t count) {
   graph_->SetNumberOfVRegs(count);
   locals_.resize(count);