Revert revision 5657.

src/arm/regexp-macro-assembler-arm.cc

Index: src/arm/regexp-macro-assembler-arm.cc
diff --git a/src/arm/regexp-macro-assembler-arm.cc b/src/arm/regexp-macro-assembler-arm.cc
index 5fd6c5370a70e642a2af2547f3b62ec933afca3f..8f45886d92f404a5da28126181a8aaec276c7aa8 100644
--- a/src/arm/regexp-macro-assembler-arm.cc
+++ b/src/arm/regexp-macro-assembler-arm.cc
@@ -142,6 +142,7 @@ int RegExpMacroAssemblerARM::stack_limit_slack()  {
 
 void RegExpMacroAssemblerARM::AdvanceCurrentPosition(int by) {
   if (by != 0) {
+    Label inside_string;
     __ add(current_input_offset(),
            current_input_offset(), Operand(by * char_size()));
   }
@@ -926,19 +927,6 @@ void RegExpMacroAssemblerARM::ReadStackPointerFromRegister(int reg) {
 }
 
 
-void RegExpMacroAssemblerARM::SetCurrentPositionFromEnd(int by) {
-  NearLabel after_position;
-  __ cmp(current_input_offset(), Operand(by * char_size()));
-  __ b(hs, &after_position);
-  __ mov(current_input_offset(), Operand(by * char_size()));
-  // On RegExp code entry (where this operation is used), the character before
-  // the current position is expected to be already loaded.
-  // We have advenced the position, so it's safe to read backwards.
-  LoadCurrentCharacterUnchecked(-1, 1);
-  __ bind(&after_position);
-}
-
-
 void RegExpMacroAssemblerARM::SetRegister(int register_index, int to) {
   ASSERT(register_index >= num_saved_registers_);  // Reserved for positions!
   __ mov(r0, Operand(to));