[turbofan] Pick remembered set action for write barrier.

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

Index: src/compiler/ppc/code-generator-ppc.cc
diff --git a/src/compiler/ppc/code-generator-ppc.cc b/src/compiler/ppc/code-generator-ppc.cc
index cf3716b6795e9c74f8ccf89037e32aeba06a0fa1..7fc6dd9d077688686cc31807749bd2624116ee28 100644
--- a/src/compiler/ppc/code-generator-ppc.cc
+++ b/src/compiler/ppc/code-generator-ppc.cc
@@ -192,6 +192,9 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
     __ CheckPageFlag(value_, scratch0_,
                      MemoryChunk::kPointersToHereAreInterestingMask, eq,
                      exit());
+    RememberedSetAction const remembered_set_action =
+        mode_ > RecordWriteMode::kValueIsMap ? EMIT_REMEMBERED_SET
+                                             : OMIT_REMEMBERED_SET;
     SaveFPRegsMode const save_fp_mode =
         frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs;
     if (!frame()->needs_frame()) {
@@ -200,7 +203,7 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
       __ Push(scratch1_);
     }
     RecordWriteStub stub(isolate(), object_, scratch0_, scratch1_,
-                         EMIT_REMEMBERED_SET, save_fp_mode);
+                         remembered_set_action, save_fp_mode);
     if (offset_.is(no_reg)) {
       __ addi(scratch1_, object_, Operand(offset_immediate_));
     } else {