[mips][codegen] Assert that RegisterArray has only unique registers

Port 032ab3d2

Bug: v8:11420
Change-Id: I7c5f627902db9f21ef35bf8d085ac6a6c72755ca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2925315
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@{#74847}

src/codegen/mips/interface-descriptors-mips-inl.h

@@ -21,11 +21,13 @@ constexpr auto CallInterfaceDescriptor::DefaultRegisterArray() {
 
 // static
 constexpr auto WriteBarrierDescriptor::registers() {
+  STATIC_ASSERT(kReturnRegister0 == v0);
   return RegisterArray(a0, a1, a2, a3, kReturnRegister0);
 }
 
 // static
 constexpr auto DynamicCheckMapsDescriptor::registers() {
+  STATIC_ASSERT(kReturnRegister0 == v0);
   return RegisterArray(kReturnRegister0, a0, a1, a2, cp);
 }
 

src/codegen/mips64/interface-descriptors-mips64-inl.h

@@ -21,11 +21,13 @@ constexpr auto CallInterfaceDescriptor::DefaultRegisterArray() {
 
 // static
 constexpr auto WriteBarrierDescriptor::registers() {
+  STATIC_ASSERT(kReturnRegister0 == v0);
   return RegisterArray(a0, a1, a2, a3, kReturnRegister0);
 }
 
 // static
 constexpr auto DynamicCheckMapsDescriptor::registers() {
+  STATIC_ASSERT(kReturnRegister0 == v0);
   return RegisterArray(kReturnRegister0, a0, a1, a2, cp);
 }