* Irregexp: Handle backtrack past look-ahead.

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 541f90942e47ca636badbfa0f8b2a7c8da25da96..74345d853e1395a278a64a4ed53c17562daf5e11 100644
--- a/src/regexp-macro-assembler-tracer.cc
+++ b/src/regexp-macro-assembler-tracer.cc
@@ -150,9 +150,9 @@ void RegExpMacroAssemblerTracer::WriteCurrentPositionToRegister(int reg,
 }
 
 
-void RegExpMacroAssemblerTracer::ClearRegister(int reg) {
-  PrintF(" ClearRegister(register=%d);\n", reg);
-  assembler_->ClearRegister(reg);
+void RegExpMacroAssemblerTracer::ClearRegisters(int reg_from, int reg_to) {
+  PrintF(" ClearRegister(from=%d, to=%d);\n", reg_from, reg_to);
+  assembler_->ClearRegisters(reg_from, reg_to);
 }