[turbofan] Fix write barrier handling of map values.

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

Index: src/compiler/arm/code-generator-arm.cc
diff --git a/src/compiler/arm/code-generator-arm.cc b/src/compiler/arm/code-generator-arm.cc
index 308ea9b558b7b34376d8a87d3387a32b14e50eb2..ac2c71126af47419d042656c65924d9c6332185c 100644
--- a/src/compiler/arm/code-generator-arm.cc
+++ b/src/compiler/arm/code-generator-arm.cc
@@ -228,11 +228,9 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
     if (mode_ > RecordWriteMode::kValueIsPointer) {
       __ JumpIfSmi(value_, exit());
     }
-    if (mode_ > RecordWriteMode::kValueIsMap) {
-      __ CheckPageFlag(value_, scratch0_,
-                       MemoryChunk::kPointersToHereAreInterestingMask, eq,
-                       exit());
-    }
+    __ CheckPageFlag(value_, scratch0_,
+                     MemoryChunk::kPointersToHereAreInterestingMask, eq,
+                     exit());
     SaveFPRegsMode const save_fp_mode =
         frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs;
     if (!frame()->needs_frame()) {