[cleanup] Drop handwritten KeyedStoreIC code

src/arm/codegen-arm.cc

 // Copyright 2012 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/arm/codegen-arm.h"
 
 #if V8_TARGET_ARCH_ARM
 
 #include <memory>
 
@@ skipping 299 matching lines @@
   DCHECK(masm->has_frame());
   masm->set_has_frame(false);
 }
 
 
 // -------------------------------------------------------------------------
 // Code generators
 
 #define __ ACCESS_MASM(masm)
 
-void ElementsTransitionGenerator::GenerateMapChangeElementsTransition(
-    MacroAssembler* masm,
-    Register receiver,
-    Register key,
-    Register value,
-    Register target_map,
-    AllocationSiteMode mode,
-    Label* allocation_memento_found) {
-  Register scratch_elements = r4;
-  DCHECK(!AreAliased(receiver, key, value, target_map,
-                     scratch_elements));
-
-  if (mode == TRACK_ALLOCATION_SITE) {
-    DCHECK(allocation_memento_found != NULL);
-    __ JumpIfJSArrayHasAllocationMemento(
-        receiver, scratch_elements, allocation_memento_found);
-  }
-
-  // Set transitioned map.
-  __ str(target_map, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  __ RecordWriteField(receiver,
-                      HeapObject::kMapOffset,
-                      target_map,
-                      r9,
-                      kLRHasNotBeenSaved,
-                      kDontSaveFPRegs,
-                      EMIT_REMEMBERED_SET,
-                      OMIT_SMI_CHECK);
-}
-
-
-void ElementsTransitionGenerator::GenerateSmiToDouble(
-    MacroAssembler* masm,
-    Register receiver,
-    Register key,
-    Register value,
-    Register target_map,
-    AllocationSiteMode mode,
-    Label* fail) {
-  // Register lr contains the return address.
-  Label loop, entry, convert_hole, gc_required, only_change_map, done;
-  Register elements = r4;
-  Register length = r5;
-  Register array = r6;
-  Register array_end = array;
-
-  // target_map parameter can be clobbered.
-  Register scratch1 = target_map;
-  Register scratch2 = r9;
-
-  // Verify input registers don't conflict with locals.
-  DCHECK(!AreAliased(receiver, key, value, target_map,
-                     elements, length, array, scratch2));
-
-  if (mode == TRACK_ALLOCATION_SITE) {
-    __ JumpIfJSArrayHasAllocationMemento(receiver, elements, fail);
-  }
-
-  // Check for empty arrays, which only require a map transition and no changes
-  // to the backing store.
-  __ ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset));
-  __ CompareRoot(elements, Heap::kEmptyFixedArrayRootIndex);
-  __ b(eq, &only_change_map);
-
-  __ push(lr);
-  __ ldr(length, FieldMemOperand(elements, FixedArray::kLengthOffset));
-  // length: number of elements (smi-tagged)
-
-  // Allocate new FixedDoubleArray.
-  // Use lr as a temporary register.
-  __ mov(lr, Operand(length, LSL, 2));
-  __ add(lr, lr, Operand(FixedDoubleArray::kHeaderSize));
-  __ Allocate(lr, array, elements, scratch2, &gc_required, DOUBLE_ALIGNMENT);
-  __ sub(array, array, Operand(kHeapObjectTag));
-  // array: destination FixedDoubleArray, not tagged as heap object.
-  __ ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset));
-  // r4: source FixedArray.
-
-  // Set destination FixedDoubleArray's length and map.
-  __ LoadRoot(scratch2, Heap::kFixedDoubleArrayMapRootIndex);
-  __ str(length, MemOperand(array, FixedDoubleArray::kLengthOffset));
-  // Update receiver's map.
-  __ str(scratch2, MemOperand(array, HeapObject::kMapOffset));
-
-  __ str(target_map, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  __ RecordWriteField(receiver,
-                      HeapObject::kMapOffset,
-                      target_map,
-                      scratch2,
-                      kLRHasBeenSaved,
-                      kDontSaveFPRegs,
-                      OMIT_REMEMBERED_SET,
-                      OMIT_SMI_CHECK);
-  // Replace receiver's backing store with newly created FixedDoubleArray.
-  __ add(scratch1, array, Operand(kHeapObjectTag));
-  __ str(scratch1, FieldMemOperand(receiver, JSObject::kElementsOffset));
-  __ RecordWriteField(receiver,
-                      JSObject::kElementsOffset,
-                      scratch1,
-                      scratch2,
-                      kLRHasBeenSaved,
-                      kDontSaveFPRegs,
-                      EMIT_REMEMBERED_SET,
-                      OMIT_SMI_CHECK);
-
-  // Prepare for conversion loop.
-  __ add(scratch1, elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
-  __ add(scratch2, array, Operand(FixedDoubleArray::kHeaderSize));
-  __ add(array_end, scratch2, Operand(length, LSL, 2));
-
-  // Repurpose registers no longer in use.
-  Register hole_lower = elements;
-  Register hole_upper = length;
-
-  __ mov(hole_lower, Operand(kHoleNanLower32));
-  __ mov(hole_upper, Operand(kHoleNanUpper32));
-  // scratch1: begin of source FixedArray element fields, not tagged
-  // hole_lower: kHoleNanLower32
-  // hole_upper: kHoleNanUpper32
-  // array_end: end of destination FixedDoubleArray, not tagged
-  // scratch2: begin of FixedDoubleArray element fields, not tagged
-
-  __ b(&entry);
-
-  __ bind(&only_change_map);
-  __ str(target_map, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  __ RecordWriteField(receiver,
-                      HeapObject::kMapOffset,
-                      target_map,
-                      scratch2,
-                      kLRHasNotBeenSaved,
-                      kDontSaveFPRegs,
-                      OMIT_REMEMBERED_SET,
-                      OMIT_SMI_CHECK);
-  __ b(&done);
-
-  // Call into runtime if GC is required.
-  __ bind(&gc_required);
-  __ pop(lr);
-  __ b(fail);
-
-  // Convert and copy elements.
-  __ bind(&loop);
-  __ ldr(lr, MemOperand(scratch1, 4, PostIndex));
-  // lr: current element
-  __ UntagAndJumpIfNotSmi(lr, lr, &convert_hole);
-
-  // Normal smi, convert to double and store.
-  __ vmov(s0, lr);
-  __ vcvt_f64_s32(d0, s0);
-  __ vstr(d0, scratch2, 0);
-  __ add(scratch2, scratch2, Operand(8));
-  __ b(&entry);
-
-  // Hole found, store the-hole NaN.
-  __ bind(&convert_hole);
-  if (FLAG_debug_code) {
-    // Restore a "smi-untagged" heap object.
-    __ SmiTag(lr);
-    __ orr(lr, lr, Operand(1));
-    __ CompareRoot(lr, Heap::kTheHoleValueRootIndex);
-    __ Assert(eq, kObjectFoundInSmiOnlyArray);
-  }
-  __ Strd(hole_lower, hole_upper, MemOperand(scratch2, 8, PostIndex));
-
-  __ bind(&entry);
-  __ cmp(scratch2, array_end);
-  __ b(lt, &loop);
-
-  __ pop(lr);
-  __ bind(&done);
-}
-
-
-void ElementsTransitionGenerator::GenerateDoubleToObject(
-    MacroAssembler* masm,
-    Register receiver,
-    Register key,
-    Register value,
-    Register target_map,
-    AllocationSiteMode mode,
-    Label* fail) {
-  // Register lr contains the return address.
-  Label entry, loop, convert_hole, gc_required, only_change_map;
-  Register elements = r4;
-  Register array = r6;
-  Register length = r5;
-  Register scratch = r9;
-
-  // Verify input registers don't conflict with locals.
-  DCHECK(!AreAliased(receiver, key, value, target_map,
-                     elements, array, length, scratch));
-
-  if (mode == TRACK_ALLOCATION_SITE) {
-    __ JumpIfJSArrayHasAllocationMemento(receiver, elements, fail);
-  }
-
-  // Check for empty arrays, which only require a map transition and no changes
-  // to the backing store.
-  __ ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset));
-  __ CompareRoot(elements, Heap::kEmptyFixedArrayRootIndex);
-  __ b(eq, &only_change_map);
-
-  __ push(lr);
-  __ Push(target_map, receiver, key, value);
-  __ ldr(length, FieldMemOperand(elements, FixedArray::kLengthOffset));
-  // elements: source FixedDoubleArray
-  // length: number of elements (smi-tagged)
-
-  // Allocate new FixedArray.
-  // Re-use value and target_map registers, as they have been saved on the
-  // stack.
-  Register array_size = value;
-  Register allocate_scratch = target_map;
-  __ mov(array_size, Operand(FixedDoubleArray::kHeaderSize));
-  __ add(array_size, array_size, Operand(length, LSL, 1));
-  __ Allocate(array_size, array, allocate_scratch, scratch, &gc_required,
-              NO_ALLOCATION_FLAGS);
-  // array: destination FixedArray, tagged as heap object
-  // Set destination FixedDoubleArray's length and map.
-  __ LoadRoot(scratch, Heap::kFixedArrayMapRootIndex);
-  __ str(length, FieldMemOperand(array, FixedDoubleArray::kLengthOffset));
-  __ str(scratch, FieldMemOperand(array, HeapObject::kMapOffset));
-
-  __ sub(array, array, Operand(kHeapObjectTag));
-
-  // Prepare for conversion loop.
-  Register src_elements = elements;
-  Register dst_elements = target_map;
-  Register dst_end = length;
-  Register heap_number_map = scratch;
-  __ add(src_elements, elements,
-         Operand(FixedDoubleArray::kHeaderSize - kHeapObjectTag + 4));
-  __ add(dst_elements, array, Operand(FixedArray::kHeaderSize));
-  __ add(dst_end, dst_elements, Operand(length, LSL, 1));
-
-  // Allocating heap numbers in the loop below can fail and cause a jump to
-  // gc_required. We can't leave a partly initialized FixedArray behind,
-  // so pessimistically fill it with holes now.
-  Label initialization_loop, initialization_loop_entry;
-  __ LoadRoot(scratch, Heap::kTheHoleValueRootIndex);
-  __ b(&initialization_loop_entry);
-  __ bind(&initialization_loop);
-  __ str(scratch, MemOperand(dst_elements, kPointerSize, PostIndex));
-  __ bind(&initialization_loop_entry);
-  __ cmp(dst_elements, dst_end);
-  __ b(lt, &initialization_loop);
-
-  __ add(dst_elements, array, Operand(FixedArray::kHeaderSize));
-  __ add(array, array, Operand(kHeapObjectTag));
-  __ LoadRoot(heap_number_map, Heap::kHeapNumberMapRootIndex);
-  // Using offsetted addresses in src_elements to fully take advantage of
-  // post-indexing.
-  // dst_elements: begin of destination FixedArray element fields, not tagged
-  // src_elements: begin of source FixedDoubleArray element fields,
-  //               not tagged, +4
-  // dst_end: end of destination FixedArray, not tagged
-  // array: destination FixedArray
-  // heap_number_map: heap number map
-  __ b(&entry);
-
-  // Call into runtime if GC is required.
-  __ bind(&gc_required);
-  __ Pop(target_map, receiver, key, value);
-  __ pop(lr);
-  __ b(fail);
-
-  __ bind(&loop);
-  Register upper_bits = key;
-  __ ldr(upper_bits, MemOperand(src_elements, 8, PostIndex));
-  // upper_bits: current element's upper 32 bit
-  // src_elements: address of next element's upper 32 bit
-  __ cmp(upper_bits, Operand(kHoleNanUpper32));
-  __ b(eq, &convert_hole);
-
-  // Non-hole double, copy value into a heap number.
-  Register heap_number = receiver;
-  Register scratch2 = value;
-  __ AllocateHeapNumber(heap_number, scratch2, lr, heap_number_map,
-                        &gc_required);
-  // heap_number: new heap number
-  __ ldr(scratch2, MemOperand(src_elements, 12, NegOffset));
-  __ Strd(scratch2, upper_bits,
-          FieldMemOperand(heap_number, HeapNumber::kValueOffset));
-  __ mov(scratch2, dst_elements);
-  __ str(heap_number, MemOperand(dst_elements, 4, PostIndex));
-  __ RecordWrite(array,
-                 scratch2,
-                 heap_number,
-                 kLRHasBeenSaved,
-                 kDontSaveFPRegs,
-                 EMIT_REMEMBERED_SET,
-                 OMIT_SMI_CHECK);
-  __ b(&entry);
-
-  // Replace the-hole NaN with the-hole pointer.
-  __ bind(&convert_hole);
-  __ LoadRoot(scratch2, Heap::kTheHoleValueRootIndex);
-  __ str(scratch2, MemOperand(dst_elements, 4, PostIndex));
-
-  __ bind(&entry);
-  __ cmp(dst_elements, dst_end);
-  __ b(lt, &loop);
-
-  __ Pop(target_map, receiver, key, value);
-  // Replace receiver's backing store with newly created and filled FixedArray.
-  __ str(array, FieldMemOperand(receiver, JSObject::kElementsOffset));
-  __ RecordWriteField(receiver,
-                      JSObject::kElementsOffset,
-                      array,
-                      scratch,
-                      kLRHasBeenSaved,
-                      kDontSaveFPRegs,
-                      EMIT_REMEMBERED_SET,
-                      OMIT_SMI_CHECK);
-  __ pop(lr);
-
-  __ bind(&only_change_map);
-  // Update receiver's map.
-  __ str(target_map, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  __ RecordWriteField(receiver,
-                      HeapObject::kMapOffset,
-                      target_map,
-                      scratch,
-                      kLRHasNotBeenSaved,
-                      kDontSaveFPRegs,
-                      OMIT_REMEMBERED_SET,
-                      OMIT_SMI_CHECK);
-}
-
-
 void StringCharLoadGenerator::Generate(MacroAssembler* masm,
                                        Register string,
                                        Register index,
                                        Register result,
                                        Label* call_runtime) {
   // Fetch the instance type of the receiver into result register.
   __ ldr(result, FieldMemOperand(string, HeapObject::kMapOffset));
   __ ldrb(result, FieldMemOperand(result, Map::kInstanceTypeOffset));
 
   // We need special handling for indirect strings.
@@ skipping 141 matching lines @@
     patcher.masm()->ldr(pc, MemOperand(pc, -4));
     patcher.masm()->emit_code_stub_address(stub);
   }
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM