ARM: Replace branch with conditional store in function prologue.

src/arm/lithium-codegen-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 103 matching lines @@
     // r1: Callee's JS function.
     // cp: Callee's context.
     // fp: Caller's frame pointer.
     // lr: Caller's pc.
 
     // Strict mode functions and builtins need to replace the receiver
     // with undefined when called as functions (without an explicit
     // receiver object). r5 is zero for method calls and non-zero for
     // function calls.
     if (!info_->is_classic_mode() || info_->is_native()) {
-      Label ok;
       __ cmp(r5, Operand::Zero());
-      __ b(eq, &ok);
       int receiver_offset = scope()->num_parameters() * kPointerSize;
       __ LoadRoot(r2, Heap::kUndefinedValueRootIndex);
-      __ str(r2, MemOperand(sp, receiver_offset));
-      __ bind(&ok);
+      __ str(r2, MemOperand(sp, receiver_offset), ne);
     }
   }
 
   info()->set_prologue_offset(masm_->pc_offset());
   if (NeedsEagerFrame()) {
     __ Prologue(info()->IsStub() ? BUILD_STUB_FRAME : BUILD_FUNCTION_FRAME);
     frame_is_built_ = true;
     info_->AddNoFrameRange(0, masm_->pc_offset());
   }
 
@@ skipping 5678 matching lines @@
   __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index));
   __ ldr(result, FieldMemOperand(scratch,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal