[mips][wasm-simd][liftoff] Implement i64x2.eq

Besides, move load/store lane out of post-mvp.

Port: 97a935ee

Port: 848137c4

Change-Id: I8d98ed9949ba76648deefb1779057b76dff1304a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2654865Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Auto-Submit: Liu yu <liuyu@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#72385}

src/compiler/backend/mips/instruction-selector-mips.cc

@@ -481,6 +481,10 @@ void InstructionSelector::VisitProtectedStore(Node* node) {
   UNIMPLEMENTED();
 }
 
+void InstructionSelector::VisitLoadLane(Node* node) { UNIMPLEMENTED(); }
+
+void InstructionSelector::VisitStoreLane(Node* node) { UNIMPLEMENTED(); }
+
 void InstructionSelector::VisitWord32And(Node* node) {
   MipsOperandGenerator g(this);
   Int32BinopMatcher m(node);

src/wasm/baseline/mips/liftoff-assembler-mips.h

@@ -1915,6 +1915,11 @@ void LiftoffAssembler::emit_f32x4_le(LiftoffRegister dst, LiftoffRegister lhs,
   bailout(kSimd, "emit_f32x4_le");
 }
 
+void LiftoffAssembler::emit_i64x2_eq(LiftoffRegister dst, LiftoffRegister lhs,
+                                     LiftoffRegister rhs) {
+  bailout(kSimd, "emit_i64x2_eq");
+}
+
 void LiftoffAssembler::emit_f64x2_eq(LiftoffRegister dst, LiftoffRegister lhs,
                                      LiftoffRegister rhs) {
   bailout(kSimd, "emit_f64x2_eq");

src/wasm/baseline/mips64/liftoff-assembler-mips64.h

@@ -1852,6 +1852,11 @@ void LiftoffAssembler::emit_f32x4_le(LiftoffRegister dst, LiftoffRegister lhs,
   fcle_w(dst.fp().toW(), lhs.fp().toW(), rhs.fp().toW());
 }
 
+void LiftoffAssembler::emit_i64x2_eq(LiftoffRegister dst, LiftoffRegister lhs,
+                                     LiftoffRegister rhs) {
+  ceq_d(dst.fp().toW(), lhs.fp().toW(), rhs.fp().toW());
+}
+
 void LiftoffAssembler::emit_f64x2_eq(LiftoffRegister dst, LiftoffRegister lhs,
                                      LiftoffRegister rhs) {
   fceq_d(dst.fp().toW(), lhs.fp().toW(), rhs.fp().toW());