Use finite-length end-anchored regexps to reduce part of regexp that is searched.

src/regexp-macro-assembler-tracer.cc

Index: src/regexp-macro-assembler-tracer.cc
diff --git a/src/regexp-macro-assembler-tracer.cc b/src/regexp-macro-assembler-tracer.cc
index 41c674b2a418eedf3cb8519c54c87a744500414d..463c1a81c5043bebb2ea7bdedf50c5f80d51033a 100644
--- a/src/regexp-macro-assembler-tracer.cc
+++ b/src/regexp-macro-assembler-tracer.cc
@@ -136,6 +136,12 @@ void RegExpMacroAssemblerTracer::AdvanceRegister(int reg, int by) {
 }
 
 
+void RegExpMacroAssemblerTracer::SetCurrentPositionFromEnd(int by) {
+  PrintF(" SetCurrentPositionFromEnd(by=%d);\n", by);
+  assembler_->SetCurrentPositionFromEnd(by);
+}
+
+
 void RegExpMacroAssemblerTracer::SetRegister(int register_index, int to) {
   PrintF(" SetRegister(register=%d, to=%d);\n", register_index, to);
   assembler_->SetRegister(register_index, to);