Allow setting debugger breakpoints on CompareNilICs

src/ia32/debug-ia32.cc

Index: src/ia32/debug-ia32.cc
diff --git a/src/ia32/debug-ia32.cc b/src/ia32/debug-ia32.cc
index d153e18ee9ad24439766438954944cad296d7b9f..a4c6bcc6796ab4a89e03d5c9932ca409d57bb956 100644
--- a/src/ia32/debug-ia32.cc
+++ b/src/ia32/debug-ia32.cc
@@ -240,6 +240,15 @@ void Debug::GenerateKeyedStoreICDebugBreak(MacroAssembler* masm) {
 }
 
 
+void Debug::GenerateCompareNilICDebugBreak(MacroAssembler* masm) {
+  // Register state for CompareNil IC
+  // ----------- S t a t e -------------
+  //  -- eax    : value
+  // -----------------------------------
+  Generate_DebugBreakCallHelper(masm, eax.bit(), 0, false);
+}
+
+
 void Debug::GenerateCallICDebugBreak(MacroAssembler* masm) {
   // Register state for keyed IC call call (from ic-ia32.cc)
   // ----------- S t a t e -------------