Fold Box(Unbox(v)) and Unbox(Box(v)) for Float32x4 and Uint32x4

runtime/vm/intermediate_language.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/intermediate_language.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/bit_vector.h"
 #include "vm/dart_entry.h"
 #include "vm/flow_graph_allocator.h"
@@ skipping 1409 matching lines @@
 }
 
 
 Definition* UnboxDoubleInstr::Canonicalize(FlowGraph* flow_graph) {
   // Fold away UnboxDouble(BoxDouble(v)).
   BoxDoubleInstr* defn = value()->definition()->AsBoxDouble();
   return (defn != NULL) ? defn->value()->definition() : this;
 }
 
 
+Definition* BoxFloat32x4Instr::Canonicalize(FlowGraph* flow_graph) {
+  if (input_use_list() == NULL) {
+    // Environments can accomodate any representation. No need to box.
+    return value()->definition();
+  }
+
+  // Fold away BoxFloat32x4(UnboxFloat32x4(v)).
+  UnboxFloat32x4Instr* defn = value()->definition()->AsUnboxFloat32x4();
+  if ((defn != NULL) && (defn->value()->Type()->ToCid() == kFloat32x4Cid)) {
+    return defn->value()->definition();
+  }
+
+  return this;
+}
+
+
+Definition* UnboxFloat32x4Instr::Canonicalize(FlowGraph* flow_graph) {
+  // Fold away UnboxFloat32x4(BoxFloat32x4(v)).
+  BoxFloat32x4Instr* defn = value()->definition()->AsBoxFloat32x4();
+  return (defn != NULL) ? defn->value()->definition() : this;
+}
+
+
+Definition* BoxUint32x4Instr::Canonicalize(FlowGraph* flow_graph) {
+  if (input_use_list() == NULL) {
+    // Environments can accomodate any representation. No need to box.
+    return value()->definition();
+  }
+
+  // Fold away BoxUint32x4(UnboxUint32x4(v)).
+  UnboxUint32x4Instr* defn = value()->definition()->AsUnboxUint32x4();
+  if ((defn != NULL) && (defn->value()->Type()->ToCid() == kUint32x4Cid)) {
+    return defn->value()->definition();
+  }
+
+  return this;
+}
+
+
+Definition* UnboxUint32x4Instr::Canonicalize(FlowGraph* flow_graph) {
+  // Fold away UnboxUint32x4(BoxUint32x4(v)).
+  BoxUint32x4Instr* defn = value()->definition()->AsBoxUint32x4();
+  return (defn != NULL) ? defn->value()->definition() : this;
+}
+
+
 Instruction* BranchInstr::Canonicalize(FlowGraph* flow_graph) {
   // Only handle strict-compares.
   if (comparison()->IsStrictCompare()) {
     Definition* replacement = comparison()->Canonicalize(flow_graph);
     if ((replacement == comparison()) || (replacement == NULL)) {
       return this;
     }
     ComparisonInstr* comp = replacement->AsComparison();
     if ((comp == NULL) || comp->CanDeoptimize()) {
       return this;
@@ skipping 1161 matching lines @@
     default:
       UNREACHABLE();
   }
   return kPowRuntimeEntry;
 }
 
 
 #undef __
 
 }  // namespace dart