[turbofan] Add FixedArray peephole optimizations to CodeStubAssembler

src/compiler/code-assembler.cc

 // Copyright 2015 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.
 
 #include "src/compiler/code-assembler.h"
 
 #include <ostream>
 
 #include "src/code-factory.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/instruction-selector.h"
 #include "src/compiler/linkage.h"
+#include "src/compiler/node-matchers.h"
 #include "src/compiler/pipeline.h"
 #include "src/compiler/raw-machine-assembler.h"
 #include "src/compiler/schedule.h"
 #include "src/frames.h"
 #include "src/interface-descriptors.h"
 #include "src/interpreter/bytecodes.h"
 #include "src/machine-type.h"
 #include "src/macro-assembler.h"
 #include "src/zone.h"
 
@@ skipping 57 matching lines @@
 }
 
 bool CodeAssembler::IsFloat64RoundDownSupported() const {
   return raw_assembler_->machine()->Float64RoundDown().IsSupported();
 }
 
 bool CodeAssembler::IsFloat64RoundTruncateSupported() const {
   return raw_assembler_->machine()->Float64RoundTruncate().IsSupported();
 }
 
-Node* CodeAssembler::Int32Constant(int value) {
+Node* CodeAssembler::Int32Constant(int32_t value) {
   return raw_assembler_->Int32Constant(value);
 }
 
+Node* CodeAssembler::Int64Constant(int64_t value) {
+  return raw_assembler_->Int64Constant(value);
+}
+
 Node* CodeAssembler::IntPtrConstant(intptr_t value) {
   return raw_assembler_->IntPtrConstant(value);
 }
 
 Node* CodeAssembler::NumberConstant(double value) {
   return raw_assembler_->NumberConstant(value);
 }
 
 Node* CodeAssembler::SmiConstant(Smi* value) {
   return IntPtrConstant(bit_cast<intptr_t>(value));
@@ skipping 12 matching lines @@
 }
 
 Node* CodeAssembler::Float64Constant(double value) {
   return raw_assembler_->Float64Constant(value);
 }
 
 Node* CodeAssembler::NaNConstant() {
   return LoadRoot(Heap::kNanValueRootIndex);
 }
 
+bool CodeAssembler::ToInt32Constant(Node* node, int32_t& out_value) {
+  Int64Matcher m(node);
+  if (m.HasValue() &&
+      m.IsInRange(std::numeric_limits<int32_t>::min(),
+                  std::numeric_limits<int32_t>::max())) {
+    out_value = static_cast<int32_t>(m.Value());
+    return true;
+  }
+
+  return false;
+}
+
+bool CodeAssembler::ToInt64Constant(Node* node, int64_t& out_value) {
+  Int64Matcher m(node);
+  if (m.HasValue()) out_value = m.Value();
+  return m.HasValue();
+}
+
+bool CodeAssembler::ToIntPtrConstant(Node* node, intptr_t& out_value) {
+  IntPtrMatcher m(node);
+  if (m.HasValue()) out_value = m.Value();
+  return m.HasValue();
+}
+
 Node* CodeAssembler::Parameter(int value) {
   return raw_assembler_->Parameter(value);
 }
 
 void CodeAssembler::Return(Node* value) {
   return raw_assembler_->Return(value);
 }
 
 void CodeAssembler::DebugBreak() { raw_assembler_->DebugBreak(); }
 
@@ skipping 565 matching lines @@
       }
     }
   }
 
   bound_ = true;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8