Harmony: optimize Math.clz32.

src/ia32/assembler-ia32.cc

Index: src/ia32/assembler-ia32.cc
diff --git a/src/ia32/assembler-ia32.cc b/src/ia32/assembler-ia32.cc
index 733432028af7d1fec81f39186e3d106f22ef044e..48f0f13550df372d5c18a95e928d57460ce6996a 100644
--- a/src/ia32/assembler-ia32.cc
+++ b/src/ia32/assembler-ia32.cc
@@ -1259,6 +1259,14 @@ void Assembler::bts(const Operand& dst, Register src) {
 }
 
 
+void Assembler::bsr(Register dst, const Operand& src) {
+  EnsureSpace ensure_space(this);
+  EMIT(0x0F);
+  EMIT(0xBD);
+  emit_operand(dst, src);
+}
+
+
 void Assembler::hlt() {
   EnsureSpace ensure_space(this);
   EMIT(0xF4);