1 files changed, 4 insertions, 42 deletions

diff --git a/js/src/jit/Lowering.cpp b/js/src/jit/Lowering.cpp
index aafa57c09..68417138b 100644
--- a/js/src/jit/Lowering.cpp
+++ b/js/src/jit/Lowering.cpp
@@ -2889,32 +2889,6 @@ LIRGenerator::visitSetInitializedLength(MSetInitializedLength* ins)
 }
 
 void
-LIRGenerator::visitUnboxedArrayLength(MUnboxedArrayLength* ins)
-{
-    define(new(alloc()) LUnboxedArrayLength(useRegisterAtStart(ins->object())), ins);
-}
-
-void
-LIRGenerator::visitUnboxedArrayInitializedLength(MUnboxedArrayInitializedLength* ins)
-{
-    define(new(alloc()) LUnboxedArrayInitializedLength(useRegisterAtStart(ins->object())), ins);
-}
-
-void
-LIRGenerator::visitIncrementUnboxedArrayInitializedLength(MIncrementUnboxedArrayInitializedLength* ins)
-{
-    add(new(alloc()) LIncrementUnboxedArrayInitializedLength(useRegister(ins->object())), ins);
-}
-
-void
-LIRGenerator::visitSetUnboxedArrayInitializedLength(MSetUnboxedArrayInitializedLength* ins)
-{
-    add(new(alloc()) LSetUnboxedArrayInitializedLength(useRegister(ins->object()),
-                                                       useRegisterOrConstant(ins->length()),
-                                                       temp()), ins);
-}
-
-void
 LIRGenerator::visitNot(MNot* ins)
 {
     MDefinition* op = ins->input();
@@ -3163,22 +3137,16 @@ LIRGenerator::visitStoreElementHole(MStoreElementHole* ins)
     const LUse elements = useRegister(ins->elements());
     const LAllocation index = useRegisterOrConstant(ins->index());
 
-    // Use a temp register when adding new elements to unboxed arrays.
-    LDefinition tempDef = LDefinition::BogusTemp();
-    if (ins->unboxedType() != JSVAL_TYPE_MAGIC)
-        tempDef = temp();
-
     LInstruction* lir;
     switch (ins->value()->type()) {
       case MIRType::Value:
-        lir = new(alloc()) LStoreElementHoleV(object, elements, index, useBox(ins->value()),
-                                              tempDef);
+        lir = new(alloc()) LStoreElementHoleV(object, elements, index, useBox(ins->value()));
         break;
 
       default:
       {
         const LAllocation value = useRegisterOrNonDoubleConstant(ins->value());
-        lir = new(alloc()) LStoreElementHoleT(object, elements, index, value, tempDef);
+        lir = new(alloc()) LStoreElementHoleT(object, elements, index, value);
         break;
       }
     }
@@ -3197,20 +3165,14 @@ LIRGenerator::visitFallibleStoreElement(MFallibleStoreElement* ins)
     const LUse elements = useRegister(ins->elements());
     const LAllocation index = useRegisterOrConstant(ins->index());
 
-    // Use a temp register when adding new elements to unboxed arrays.
-    LDefinition tempDef = LDefinition::BogusTemp();
-    if (ins->unboxedType() != JSVAL_TYPE_MAGIC)
-        tempDef = temp();
-
     LInstruction* lir;
     switch (ins->value()->type()) {
       case MIRType::Value:
-        lir = new(alloc()) LFallibleStoreElementV(object, elements, index, useBox(ins->value()),
-                                                  tempDef);
+        lir = new(alloc()) LFallibleStoreElementV(object, elements, index, useBox(ins->value()));
         break;
       default:
         const LAllocation value = useRegisterOrNonDoubleConstant(ins->value());
-        lir = new(alloc()) LFallibleStoreElementT(object, elements, index, value, tempDef);
+        lir = new(alloc()) LFallibleStoreElementT(object, elements, index, value);
         break;
     }