[mips][wasm] Use int type for small offsets

Port ba564604
https://chromium-review.googlesource.com/c/v8/v8/+/2489691

Change-Id: I2397db612dc99904ef1ef3876b973b74850c9c38
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2496600
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70773}

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

@@ -360,16 +360,16 @@ void LiftoffAssembler::LoadConstant(LiftoffRegister reg, WasmValue value,
   }
 }
 
-void LiftoffAssembler::LoadFromInstance(Register dst, uint32_t offset,
+void LiftoffAssembler::LoadFromInstance(Register dst, int32_t offset,
                                         int size) {
-  DCHECK_LE(offset, kMaxInt);
+  DCHECK_LE(0, offset);
   lw(dst, liftoff::GetInstanceOperand());
   DCHECK_EQ(4, size);
   lw(dst, MemOperand(dst, offset));
 }
 
 void LiftoffAssembler::LoadTaggedPointerFromInstance(Register dst,
-                                                     uint32_t offset) {
+                                                     int32_t offset) {
   LoadFromInstance(dst, offset, kTaggedSize);
 }
 

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

@@ -340,9 +340,9 @@ void LiftoffAssembler::LoadConstant(LiftoffRegister reg, WasmValue value,
   }
 }
 
-void LiftoffAssembler::LoadFromInstance(Register dst, uint32_t offset,
+void LiftoffAssembler::LoadFromInstance(Register dst, int32_t offset,
                                         int size) {
-  DCHECK_LE(offset, kMaxInt);
+  DCHECK_LE(0, offset);
   Ld(dst, liftoff::GetInstanceOperand());
   DCHECK(size == 4 || size == 8);
   if (size == 4) {
@@ -353,7 +353,7 @@ void LiftoffAssembler::LoadFromInstance(Register dst, uint32_t offset,
 }
 
 void LiftoffAssembler::LoadTaggedPointerFromInstance(Register dst,
-                                                     uint32_t offset) {
+                                                     int32_t offset) {
   LoadFromInstance(dst, offset, kTaggedSize);
 }