From b20bda2f52ac6cae5840604e8ef379e4bff1225a Mon Sep 17 00:00:00 2001
From: Lixuanwang <xlwmail@nudt.edu.cn>
Date: Tue, 22 Jul 2025 21:36:22 +0800
Subject: [PATCH] =?UTF-8?q?[backend]=E5=BC=95=E5=85=A5=E4=BA=86=E6=A0=88?=
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---
 src/RISCv64RegAlloc.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/RISCv64RegAlloc.cpp b/src/RISCv64RegAlloc.cpp
index d4c69e7..0c0a4a3 100644
--- a/src/RISCv64RegAlloc.cpp
+++ b/src/RISCv64RegAlloc.cpp
@@ -27,7 +27,8 @@ void RISCv64RegAlloc::run() {
 
 void RISCv64RegAlloc::eliminateFrameIndices() {
     StackFrameInfo& frame_info = MFunc->getFrameInfo();
-    int current_offset = 0;
+    int current_offset = 20;    // 这里写20是为了在$s0和第一个变量之间留出20字节的安全区，
+                                // 以防止一些函数调用方面的恶性bug。
     Function* F = MFunc->getFunc();
     RISCv64ISel* isel = MFunc->getISel();