NewGC: Merge bleeding edge up to 9009.

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
===================================================================
--- src/ia32/lithium-ia32.cc	(revision 9006)
+++ src/ia32/lithium-ia32.cc	(working copy)
@@ -1047,10 +1047,7 @@
   // involving maps).
   bool needs_temp = expected.NeedsMap() || expected.IsEmpty();
   LOperand* temp = needs_temp ? TempRegister() : NULL;
-  LInstruction* branch = new LBranch(UseRegister(v), temp);
-  // When we handle all cases, we never deopt, so we don't need to assign the
-  // environment then.
-  return expected.IsAll() ? branch : AssignEnvironment(branch);
+  return AssignEnvironment(new LBranch(UseRegister(v), temp));
 }
 
 
@@ -1541,19 +1538,13 @@
 }
 
 
-LInstruction* LChunkBuilder::DoFixedArrayLength(HFixedArrayLength* instr) {
+LInstruction* LChunkBuilder::DoFixedArrayBaseLength(
+    HFixedArrayBaseLength* instr) {
   LOperand* array = UseRegisterAtStart(instr->value());
-  return DefineAsRegister(new LFixedArrayLength(array));
+  return DefineAsRegister(new LFixedArrayBaseLength(array));
 }
 
 
-LInstruction* LChunkBuilder::DoExternalArrayLength(
-    HExternalArrayLength* instr) {
-  LOperand* array = UseRegisterAtStart(instr->value());
-  return DefineAsRegister(new LExternalArrayLength(array));
-}
-
-
 LInstruction* LChunkBuilder::DoElementsKind(HElementsKind* instr) {
   LOperand* object = UseRegisterAtStart(instr->value());
   return DefineAsRegister(new LElementsKind(object));
@@ -1568,8 +1559,9 @@
 
 
 LInstruction* LChunkBuilder::DoBoundsCheck(HBoundsCheck* instr) {
-  return AssignEnvironment(new LBoundsCheck(UseRegisterAtStart(instr->index()),
-                                            UseAtStart(instr->length())));
+  return AssignEnvironment(new LBoundsCheck(
+      UseRegisterOrConstantAtStart(instr->index()),
+      UseAtStart(instr->length())));
 }
 
 
@@ -1890,9 +1882,9 @@
   ASSERT(instr->representation().IsTagged());
   ASSERT(instr->key()->representation().IsInteger32());
   LOperand* obj = UseRegisterAtStart(instr->object());
-  LOperand* key = UseRegisterAtStart(instr->key());
+  LOperand* key = UseRegisterOrConstantAtStart(instr->key());
   LLoadKeyedFastElement* result = new LLoadKeyedFastElement(obj, key);
-  return AssignEnvironment(DefineSameAsFirst(result));
+  return AssignEnvironment(DefineAsRegister(result));
 }