[mips][compiler] Keep WriteBarrier Smi check on the main code path

Port: d3d4a896

Bug: v8:11420
Change-Id: I016981f83f347a1bafae9a72882b634a69b86c64
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2894002
Auto-Submit: Liu yu <liuyu@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#74552}

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

@@ -161,9 +161,6 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
   }
 
   void Generate() final {
-    if (mode_ > RecordWriteMode::kValueIsPointer) {
-      __ JumpIfSmi(value_, exit());
-    }
     __ CheckPageFlag(value_, scratch0_,
                      MemoryChunk::kPointersToHereAreInterestingMask, eq,
                      exit());
@@ -916,6 +913,9 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
                                                    DetermineStubCallMode());
       __ Addu(kScratchReg, object, index);
       __ sw(value, MemOperand(kScratchReg));
+      if (mode > RecordWriteMode::kValueIsPointer) {
+        __ JumpIfSmi(value, ool->exit());
+      }
       __ CheckPageFlag(object, scratch0,
                        MemoryChunk::kPointersFromHereAreInterestingMask, ne,
                        ool->entry());

src/compiler/backend/mips64/code-generator-mips64.cc

@@ -163,9 +163,6 @@ class OutOfLineRecordWrite final : public OutOfLineCode {
   }
 
   void Generate() final {
-    if (mode_ > RecordWriteMode::kValueIsPointer) {
-      __ JumpIfSmi(value_, exit());
-    }
     __ CheckPageFlag(value_, scratch0_,
                      MemoryChunk::kPointersToHereAreInterestingMask, eq,
                      exit());
@@ -878,6 +875,9 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
                                                    DetermineStubCallMode());
       __ Daddu(kScratchReg, object, index);
       __ Sd(value, MemOperand(kScratchReg));
+      if (mode > RecordWriteMode::kValueIsPointer) {
+        __ JumpIfSmi(value, ool->exit());
+      }
       __ CheckPageFlag(object, scratch0,
                        MemoryChunk::kPointersFromHereAreInterestingMask, ne,
                        ool->entry());