[loong64][mips64][wasm][liftoff] Fix and cleanup tracing of return value

Port commit 6f9e71fa

Change-Id: I8aaf45c82b3787acd55de595cebe6b4b3c99efc2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3893596
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/main@{#83160}

src/wasm/baseline/loong64/liftoff-assembler-loong64.h

@@ -1012,6 +1012,10 @@ void LiftoffAssembler::FillStackSlotsWithZero(int start, int size) {
   }
 }
 
+void LiftoffAssembler::LoadSpillAddress(Register dst, int offset) {
+  Sub_d(dst, fp, Operand(offset));
+}
+
 void LiftoffAssembler::emit_i64_clz(LiftoffRegister dst, LiftoffRegister src) {
   TurboAssembler::Clz_d(dst.gp(), src.gp());
 }

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

@@ -1109,6 +1109,10 @@ void LiftoffAssembler::FillStackSlotsWithZero(int start, int size) {
   }
 }
 
+void LiftoffAssembler::LoadSpillAddress(Register dst, int offset) {
+  Dsub(dst, fp, Operand(offset));
+}
+
 void LiftoffAssembler::emit_i64_clz(LiftoffRegister dst, LiftoffRegister src) {
   TurboAssembler::Dclz(dst.gp(), src.gp());
 }