[mips64][liftoff] Change FillStackSlotsWithZero to use bytes

port 785fa6b4 https://crrev.com/c/1947350

Change-Id: I76e7d7b0afcea14bee7e11c8317ede5f4c880d1d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1951281
Auto-Submit: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65359}

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

@@ -543,7 +543,7 @@ void LiftoffAssembler::FillStackSlotsWithZero(uint32_t start, uint32_t size) {
     // General case for bigger counts (12 instructions).
     // Use a0 for start address (inclusive), a1 for end address (exclusive).
     Push(a1, a0);
-    Daddu(a0, fp, Operand(-liftoff::GetStackSlotOffset(start + end)));
+    Daddu(a0, fp, Operand(-liftoff::GetStackSlotOffset(start + size)));
     Daddu(a1, fp, Operand(-liftoff::GetStackSlotOffset(start)));
 
     Label loop;