s390: fix overflowing offset in std and ld

src/crankshaft/s390/lithium-codegen-s390.cc

 // Copyright 2014 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/crankshaft/s390/lithium-codegen-s390.h"
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 48 matching lines @@
 }
 
 void LCodeGen::SaveCallerDoubles() {
   DCHECK(info()->saves_caller_doubles());
   DCHECK(NeedsEagerFrame());
   Comment(";;; Save clobbered callee double registers");
   int count = 0;
   BitVector* doubles = chunk()->allocated_double_registers();
   BitVector::Iterator save_iterator(doubles);
   while (!save_iterator.Done()) {
-    __ std(DoubleRegister::from_code(save_iterator.Current()),
-           MemOperand(sp, count * kDoubleSize));
+    __ StoreDouble(DoubleRegister::from_code(save_iterator.Current()),
+                   MemOperand(sp, count * kDoubleSize));
     save_iterator.Advance();
     count++;
   }
 }
 
 void LCodeGen::RestoreCallerDoubles() {
   DCHECK(info()->saves_caller_doubles());
   DCHECK(NeedsEagerFrame());
   Comment(";;; Restore clobbered callee double registers");
   BitVector* doubles = chunk()->allocated_double_registers();
   BitVector::Iterator save_iterator(doubles);
   int count = 0;
   while (!save_iterator.Done()) {
-    __ ld(DoubleRegister::from_code(save_iterator.Current()),
-          MemOperand(sp, count * kDoubleSize));
+    __ LoadDouble(DoubleRegister::from_code(save_iterator.Current()),
+                  MemOperand(sp, count * kDoubleSize));
     save_iterator.Advance();
     count++;
   }
 }
 
 bool LCodeGen::GeneratePrologue() {
   DCHECK(is_generating());
 
   if (info()->IsOptimizing()) {
     ProfileEntryHookStub::MaybeCallEntryHook(masm_);
@@ skipping 1986 matching lines @@
       EmitBranch(instr, eq);
     } else if (type.IsSmi()) {
       DCHECK(!info()->IsStub());
       __ CmpP(reg, Operand::Zero());
       EmitBranch(instr, ne);
     } else if (type.IsJSArray()) {
       DCHECK(!info()->IsStub());
       EmitBranch(instr, al);
     } else if (type.IsHeapNumber()) {
       DCHECK(!info()->IsStub());
-      __ ld(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset));
+      __ LoadDouble(dbl_scratch,
+                    FieldMemOperand(reg, HeapNumber::kValueOffset));
       // Test the double value. Zero and NaN are false.
       __ lzdr(kDoubleRegZero);
       __ cdbr(dbl_scratch, kDoubleRegZero);
       Condition lt_gt = static_cast<Condition>(lt | gt);
       EmitBranch(instr, lt_gt);
     } else if (type.IsString()) {
       DCHECK(!info()->IsStub());
       __ LoadP(ip, FieldMemOperand(reg, String::kLengthOffset));
       __ CmpP(ip, Operand::Zero());
       EmitBranch(instr, ne);
@@ skipping 568 matching lines @@
   if (access.IsExternalMemory()) {
     Register result = ToRegister(instr->result());
     MemOperand operand = MemOperand(object, offset);
     __ LoadRepresentation(result, operand, access.representation(), r0);
     return;
   }
 
   if (instr->hydrogen()->representation().IsDouble()) {
     DCHECK(access.IsInobject());
     DoubleRegister result = ToDoubleRegister(instr->result());
-    __ ld(result, FieldMemOperand(object, offset));
+    __ LoadDouble(result, FieldMemOperand(object, offset));
     return;
   }
 
   Register result = ToRegister(instr->result());
   if (!access.IsInobject()) {
     __ LoadP(result, FieldMemOperand(object, JSObject::kPropertiesOffset));
     object = result;
   }
 
   Representation representation = access.representation();
@@ skipping 117 matching lines @@
       use_scratch = true;
     }
     if (elements_kind == FLOAT32_ELEMENTS) {
       if (!use_scratch) {
         __ ldeb(result, MemOperand(external_pointer, base_offset));
       } else {
         __ ldeb(result, MemOperand(scratch0(), external_pointer, base_offset));
       }
     } else {  // i.e. elements_kind == EXTERNAL_DOUBLE_ELEMENTS
       if (!use_scratch) {
-        __ ld(result, MemOperand(external_pointer, base_offset));
+        __ LoadDouble(result, MemOperand(external_pointer, base_offset));
       } else {
-        __ ld(result, MemOperand(scratch0(), external_pointer, base_offset));
+        __ LoadDouble(result,
+                      MemOperand(scratch0(), external_pointer, base_offset));
       }
     }
   } else {
     Register result = ToRegister(instr->result());
     MemOperand mem_operand =
         PrepareKeyedOperand(key, external_pointer, key_is_constant, key_is_smi,
                             constant_key, element_size_shift, base_offset,
                             keyMaybeNegative);
     switch (elements_kind) {
       case INT8_ELEMENTS:
@@ skipping 74 matching lines @@
     use_scratch = true;
     if (key_is_constant) {
       __ mov(scratch, Operand(base_offset));
     } else {
       __ AddP(scratch, Operand(base_offset));
     }
     base_offset = 0;
   }
 
   if (!use_scratch) {
-    __ ld(result, MemOperand(elements, base_offset));
+    __ LoadDouble(result, MemOperand(elements, base_offset));
   } else {
-    __ ld(result, MemOperand(scratch, elements, base_offset));
+    __ LoadDouble(result, MemOperand(scratch, elements, base_offset));
   }
 
   if (instr->hydrogen()->RequiresHoleCheck()) {
     if (!use_scratch) {
       __ LoadlW(r0,
                 MemOperand(elements, base_offset + Register::kExponentOffset));
     } else {
       __ LoadlW(r0, MemOperand(scratch, elements,
                                base_offset + Register::kExponentOffset));
     }
@@ skipping 900 matching lines @@
 #else
   DCHECK(!representation.IsSmi() || !instr->value()->IsConstantOperand() ||
          IsSmi(LConstantOperand::cast(instr->value())));
 #endif
   if (!FLAG_unbox_double_fields && representation.IsDouble()) {
     DCHECK(access.IsInobject());
     DCHECK(!hinstr->has_transition());
     DCHECK(!hinstr->NeedsWriteBarrier());
     DoubleRegister value = ToDoubleRegister(instr->value());
     DCHECK(offset >= 0);
-    __ std(value, FieldMemOperand(object, offset));
+    __ StoreDouble(value, FieldMemOperand(object, offset));
     return;
   }
 
   if (hinstr->has_transition()) {
     Handle<Map> transition = hinstr->transition_map();
     AddDeprecationDependency(transition);
     __ mov(scratch, Operand(transition));
     __ StoreP(scratch, FieldMemOperand(object, HeapObject::kMapOffset), r0);
     if (hinstr->NeedsWriteBarrierForMap()) {
       Register temp = ToRegister(instr->temp());
       // Update the write barrier for the map field.
       __ RecordWriteForMap(object, scratch, temp, GetLinkRegisterState(),
                            kSaveFPRegs);
     }
   }
 
   // Do the store.
   Register record_dest = object;
   Register record_value = no_reg;
   Register record_scratch = scratch;
 #if V8_TARGET_ARCH_S390X
   if (FLAG_unbox_double_fields && representation.IsDouble()) {
     DCHECK(access.IsInobject());
     DoubleRegister value = ToDoubleRegister(instr->value());
-    __ std(value, FieldMemOperand(object, offset));
+    __ StoreDouble(value, FieldMemOperand(object, offset));
     if (hinstr->NeedsWriteBarrier()) {
       record_value = ToRegister(instr->value());
     }
   } else {
     if (representation.IsSmi() &&
         hinstr->value()->representation().IsInteger32()) {
       DCHECK(hinstr->store_mode() == STORE_TO_INITIALIZED_ENTRY);
       // 64-bit Smi optimization
       // Store int value directly to upper half of the smi.
       offset = SmiWordOffset(offset);
@@ skipping 208 matching lines @@
       __ AddP(scratch, Operand(address_offset));
       address_offset = 0;
     }
   }
 
   if (instr->NeedsCanonicalization()) {
     // Turn potential sNaN value into qNaN.
     __ CanonicalizeNaN(double_scratch, value);
     DCHECK(address_offset >= 0);
     if (use_scratch)
-      __ std(double_scratch, MemOperand(scratch, elements, address_offset));
+      __ StoreDouble(double_scratch,
+                     MemOperand(scratch, elements, address_offset));
     else
-      __ std(double_scratch, MemOperand(elements, address_offset));
+      __ StoreDouble(double_scratch, MemOperand(elements, address_offset));
   } else {
     if (use_scratch)
-      __ std(value, MemOperand(scratch, elements, address_offset));
+      __ StoreDouble(value, MemOperand(scratch, elements, address_offset));
     else
-      __ std(value, MemOperand(elements, address_offset));
+      __ StoreDouble(value, MemOperand(elements, address_offset));
   }
 }
 
 void LCodeGen::DoStoreKeyedFixedArray(LStoreKeyed* instr) {
   HStoreKeyed* hinstr = instr->hydrogen();
   Register value = ToRegister(instr->value());
   Register elements = ToRegister(instr->elements());
   Register key = instr->key()->IsRegister() ? ToRegister(instr->key()) : no_reg;
   Register scratch = scratch0();
   int offset = instr->base_offset();
@@ skipping 559 matching lines @@
     // Heap number map check.
     __ LoadP(scratch, FieldMemOperand(input_reg, HeapObject::kMapOffset));
     __ CmpP(scratch, RootMemOperand(Heap::kHeapNumberMapRootIndex));
 
     if (can_convert_undefined_to_nan) {
       __ bne(&convert, Label::kNear);
     } else {
       DeoptimizeIf(ne, instr, DeoptimizeReason::kNotAHeapNumber);
     }
     // load heap number
-    __ ld(result_reg, FieldMemOperand(input_reg, HeapNumber::kValueOffset));
+    __ LoadDouble(result_reg,
+                  FieldMemOperand(input_reg, HeapNumber::kValueOffset));
     if (deoptimize_on_minus_zero) {
       __ TestDoubleIsMinusZero(result_reg, scratch, ip);
       DeoptimizeIf(eq, instr, DeoptimizeReason::kMinusZero);
     }
     __ b(&done, Label::kNear);
     if (can_convert_undefined_to_nan) {
       __ bind(&convert);
       // Convert undefined (and hole) to NaN.
       __ CompareRoot(input_reg, Heap::kUndefinedValueRootIndex);
       DeoptimizeIf(ne, instr, DeoptimizeReason::kNotAHeapNumberUndefined);
       __ LoadRoot(scratch, Heap::kNanValueRootIndex);
-      __ ld(result_reg, FieldMemOperand(scratch, HeapNumber::kValueOffset));
+      __ LoadDouble(result_reg,
+                    FieldMemOperand(scratch, HeapNumber::kValueOffset));
       __ b(&done, Label::kNear);
     }
   } else {
     __ SmiUntag(scratch, input_reg);
     DCHECK(mode == NUMBER_CANDIDATE_IS_SMI);
   }
   // Smi to double register conversion
   __ bind(&load_smi);
   // scratch: untagged value of input_reg
   __ ConvertIntToDouble(scratch, result_reg);
@@ skipping 21 matching lines @@
     __ beq(&truncate);
     __ CompareInstanceType(scratch1, scratch1, ODDBALL_TYPE);
     DeoptimizeIf(ne, instr, DeoptimizeReason::kNotANumberOrOddball);
     __ bind(&truncate);
     __ LoadRR(scratch2, input_reg);
     __ TruncateHeapNumberToI(input_reg, scratch2);
   } else {
     // Deoptimize if we don't have a heap number.
     DeoptimizeIf(ne, instr, DeoptimizeReason::kNotAHeapNumber);
 
-    __ ld(double_scratch2,
-          FieldMemOperand(input_reg, HeapNumber::kValueOffset));
+    __ LoadDouble(double_scratch2,
+                  FieldMemOperand(input_reg, HeapNumber::kValueOffset));
     if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) {
       // preserve heap number pointer in scratch2 for minus zero check below
       __ LoadRR(scratch2, input_reg);
     }
     __ TryDoubleToInt32Exact(input_reg, double_scratch2, scratch1,
                              double_scratch);
     DeoptimizeIf(ne, instr, DeoptimizeReason::kLostPrecisionOrNaN);
 
     if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) {
       __ CmpP(input_reg, Operand::Zero());
@@ skipping 293 matching lines @@
 
   // Check for undefined. Undefined is converted to zero for clamping
   // conversions.
   __ CmpP(input_reg, Operand(factory()->undefined_value()));
   DeoptimizeIf(ne, instr, DeoptimizeReason::kNotAHeapNumberUndefined);
   __ LoadImmP(result_reg, Operand::Zero());
   __ b(&done, Label::kNear);
 
   // Heap number
   __ bind(&heap_number);
-  __ ld(temp_reg, FieldMemOperand(input_reg, HeapNumber::kValueOffset));
+  __ LoadDouble(temp_reg, FieldMemOperand(input_reg, HeapNumber::kValueOffset));
   __ ClampDoubleToUint8(result_reg, temp_reg, double_scratch0());
   __ b(&done, Label::kNear);
 
   // smi
   __ bind(&is_smi);
   __ ClampUint8(result_reg, result_reg);
 
   __ bind(&done);
 }
 
@@ skipping 480 matching lines @@
   __ LoadP(result,
            FieldMemOperand(scratch, FixedArray::kHeaderSize - kPointerSize));
   __ bind(deferred->exit());
   __ bind(&done);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8