[turbofan] Fix write barrier handling of map values.

src/compiler/ia32/code-generator-ia32.cc

Index: src/compiler/ia32/code-generator-ia32.cc
diff --git a/src/compiler/ia32/code-generator-ia32.cc b/src/compiler/ia32/code-generator-ia32.cc
index 555667afaef848cc1b5dceb3b892aea41938368c..27deddc0ecad7d437d8e7e34ae07ac01d37554e8 100644
--- a/src/compiler/ia32/code-generator-ia32.cc
+++ b/src/compiler/ia32/code-generator-ia32.cc
@@ -242,11 +242,9 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
     if (mode_ > RecordWriteMode::kValueIsPointer) {
       __ JumpIfSmi(value_, exit());
     }
-    if (mode_ > RecordWriteMode::kValueIsMap) {
-      __ CheckPageFlag(value_, scratch0_,
-                       MemoryChunk::kPointersToHereAreInterestingMask, zero,
-                       exit());
-    }
+    __ CheckPageFlag(value_, scratch0_,
+                     MemoryChunk::kPointersToHereAreInterestingMask, zero,
+                     exit());
     SaveFPRegsMode const save_fp_mode =
         frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs;
     RecordWriteStub stub(isolate(), object_, scratch0_, scratch1_,