PPC/s390: [compiler] Keep WriteBarrier Smi check on the main code path

Port d3d4a896

Original Commit Message:

    Checking for Smis is cheap. There is no need to put this in the
    deferred code block. With this CL we will bail out earlier for
    Smis.

R=cbruni@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I29811cdeae0310031c114260734f3d5429e77633
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2883861Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#74478}

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

@@ -171,9 +171,6 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
 
   void Generate() final {
     ConstantPoolUnavailableScope constant_pool_unavailable(tasm());
-    if (mode_ > RecordWriteMode::kValueIsPointer) {
-      __ JumpIfSmi(value_, exit());
-    }
     if (COMPRESS_POINTERS_BOOL) {
       __ DecompressTaggedPointer(value_, value_);
     }
@@ -1192,6 +1189,9 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
             DetermineStubCallMode(), &unwinding_info_writer_);
         __ StoreTaggedFieldX(value, MemOperand(object, offset), r0);
       }
+      if (mode > RecordWriteMode::kValueIsPointer) {
+        __ JumpIfSmi(value, ool->exit());
+      }
       __ CheckPageFlag(object, scratch0,
                        MemoryChunk::kPointersFromHereAreInterestingMask, ne,
                        ool->entry());

src/compiler/backend/s390/code-generator-s390.cc

@@ -206,9 +206,6 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
         zone_(gen->zone()) {}
 
   void Generate() final {
-    if (mode_ > RecordWriteMode::kValueIsPointer) {
-      __ JumpIfSmi(value_, exit());
-    }
     if (COMPRESS_POINTERS_BOOL) {
       __ DecompressTaggedPointer(value_, value_);
     }
@@ -1374,6 +1371,9 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
             DetermineStubCallMode(), &unwinding_info_writer_);
         __ StoreTaggedField(value, MemOperand(object, offset));
       }
+      if (mode > RecordWriteMode::kValueIsPointer) {
+        __ JumpIfSmi(value, ool->exit());
+      }
       __ CheckPageFlag(object, scratch0,
                        MemoryChunk::kPointersFromHereAreInterestingMask, ne,
                        ool->entry());