Reland "Add out-of-line constant pool support to Arm."

src/arm/builtins-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 944 matching lines @@
   // If the code object is null, just return to the unoptimized code.
   Label skip;
   __ cmp(r0, Operand(Smi::FromInt(0)));
   __ b(ne, &skip);
   __ Ret();
 
   __ bind(&skip);
 
   // Load deoptimization data from the code object.
   // <deopt_data> = <code>[#deoptimization_data_offset]
-  __ ldr(r1, MemOperand(r0, Code::kDeoptimizationDataOffset - kHeapObjectTag));
+  __ ldr(r1, FieldMemOperand(r0, Code::kDeoptimizationDataOffset));
 
-  // Load the OSR entrypoint offset from the deoptimization data.
-  // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset]
-  __ ldr(r1, MemOperand(r1, FixedArray::OffsetOfElementAt(
-      DeoptimizationInputData::kOsrPcOffsetIndex) - kHeapObjectTag));
+  { ConstantPoolUnavailableScope constant_pool_unavailable(masm);
+    if (FLAG_enable_ool_constant_pool) {
+      __ ldr(pp, FieldMemOperand(r0, Code::kConstantPoolOffset));
+    }
 
-  // Compute the target address = code_obj + header_size + osr_offset
-  // <entry_addr> = <code_obj> + #header_size + <osr_offset>
-  __ add(r0, r0, Operand::SmiUntag(r1));
-  __ add(lr, r0, Operand(Code::kHeaderSize - kHeapObjectTag));
+    // Load the OSR entrypoint offset from the deoptimization data.
+    // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset]
+    __ ldr(r1, FieldMemOperand(r1, FixedArray::OffsetOfElementAt(
+        DeoptimizationInputData::kOsrPcOffsetIndex)));
 
-  // And "return" to the OSR entry point of the function.
-  __ Ret();
+    // Compute the target address = code_obj + header_size + osr_offset
+    // <entry_addr> = <code_obj> + #header_size + <osr_offset>
+    __ add(r0, r0, Operand::SmiUntag(r1));
+    __ add(lr, r0, Operand(Code::kHeaderSize - kHeapObjectTag));
+
+    // And "return" to the OSR entry point of the function.
+    __ Ret();
+  }
 }
 
 
 void Builtins::Generate_OsrAfterStackCheck(MacroAssembler* masm) {
   // We check the stack limit as indicator that recompilation might be done.
   Label ok;
   __ LoadRoot(ip, Heap::kStackLimitRootIndex);
   __ cmp(sp, Operand(ip));
   __ b(hs, &ok);
   {
@@ skipping 484 matching lines @@
   __ bind(&dont_adapt_arguments);
   __ Jump(r3);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM