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test/cctest/compiler/instruction-selector-tester.h

Index: test/cctest/compiler/instruction-selector-tester.h
diff --git a/test/cctest/compiler/instruction-selector-tester.h b/test/cctest/compiler/instruction-selector-tester.h
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+// Copyright 2014 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.
+
+#ifndef V8_CCTEST_COMPILER_INSTRUCTION_SELECTOR_TEST_H_
+#define V8_CCTEST_COMPILER_INSTRUCTION_SELECTOR_TEST_H_
+
+#include <deque>
+#include <set>
+
+#include "src/compiler/instruction-selector.h"
+#include "src/compiler/raw-machine-assembler.h"
+#include "src/ostreams.h"
+#include "test/cctest/cctest.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+typedef std::set<int> VirtualRegisterSet;
+
+enum InstructionSelectorTesterMode { kTargetMode, kInternalMode };
+
+class InstructionSelectorTester : public HandleAndZoneScope,
+                                  public RawMachineAssembler {
+ public:
+  enum Mode { kTargetMode, kInternalMode };
+
+  static const int kParameterCount = 3;
+  static MachineRepresentation* BuildParameterArray(Zone* zone) {
+    MachineRepresentation* array =
+        zone->NewArray<MachineRepresentation>(kParameterCount);
+    for (int i = 0; i < kParameterCount; ++i) {
+      array[i] = kMachineWord32;
+    }
+    return array;
+  }
+
+  explicit InstructionSelectorTester(Mode mode = kTargetMode)
+      : RawMachineAssembler(
+            new (main_zone()) Graph(main_zone()), new (main_zone())
+            MachineCallDescriptorBuilder(kMachineWord32, kParameterCount,
+                                         BuildParameterArray(main_zone())),
+            MachineOperatorBuilder::pointer_rep()),
+        mode_(mode) {}
+
+  void SelectInstructions() {
+    OFStream out(stdout);
+    Schedule* schedule = Export();
+    CHECK_NE(0, graph()->NodeCount());
+    CompilationInfo info(main_isolate(), main_zone());
+    Linkage linkage(&info, call_descriptor());
+    InstructionSequence sequence(&linkage, graph(), schedule);
+    SourcePositionTable source_positions(graph());
+    InstructionSelector selector(&sequence, &source_positions);
+    selector.SelectInstructions();
+    out << "--- Code sequence after instruction selection --- " << endl
+        << sequence;
+    for (InstructionSequence::const_iterator i = sequence.begin();
+         i != sequence.end(); ++i) {
+      Instruction* instr = *i;
+      if (instr->opcode() < 0) continue;
+      if (mode_ == kTargetMode) {
+        switch (ArchOpcodeField::decode(instr->opcode())) {
+#define CASE(Name) \
+  case k##Name:    \
+    break;
+          TARGET_ARCH_OPCODE_LIST(CASE)
+#undef CASE
+          default:
+            continue;
+        }
+      }
+      code.push_back(instr);
+    }
+    for (int vreg = 0; vreg < sequence.VirtualRegisterCount(); ++vreg) {
+      if (sequence.IsDouble(vreg)) {
+        CHECK(!sequence.IsReference(vreg));
+        doubles.insert(vreg);
+      }
+      if (sequence.IsReference(vreg)) {
+        CHECK(!sequence.IsDouble(vreg));
+        references.insert(vreg);
+      }
+    }
+    immediates.assign(sequence.immediates().begin(),
+                      sequence.immediates().end());
+  }
+
+  int32_t ToInt32(const InstructionOperand* operand) const {
+    size_t i = operand->index();
+    CHECK(i < immediates.size());
+    CHECK_EQ(InstructionOperand::IMMEDIATE, operand->kind());
+    return immediates[i].ToInt32();
+  }
+
+  std::deque<Instruction*> code;
+  VirtualRegisterSet doubles;
+  VirtualRegisterSet references;
+  std::deque<Constant> immediates;
+
+ private:
+  Mode mode_;
+};
+
+
+static inline void CheckSameVreg(InstructionOperand* exp,
+                                 InstructionOperand* val) {
+  CHECK_EQ(InstructionOperand::UNALLOCATED, exp->kind());
+  CHECK_EQ(InstructionOperand::UNALLOCATED, val->kind());
+  CHECK_EQ(UnallocatedOperand::cast(exp)->virtual_register(),
+           UnallocatedOperand::cast(val)->virtual_register());
+}
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_CCTEST_COMPILER_INSTRUCTION_SELECTOR_TEST_H_