From 685e5318771d90711e331e6192b2d2002076d99e Mon Sep 17 00:00:00 2001
From: Lixing <lixing@loongson.cn>
Date: Thu, 31 Aug 2023 17:07:11 +0800
Subject: [PATCH] Fix dwarf2cfi error

---
 gcc/dwarf2cfi.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/gcc/dwarf2cfi.c b/gcc/dwarf2cfi.c
index c3e69e8b8..938222156 100644
--- a/gcc/dwarf2cfi.c
+++ b/gcc/dwarf2cfi.c
@@ -1948,6 +1948,16 @@ dwarf2out_frame_debug_expr (rtx expr)
 	  {
 	    unsigned int regno = dwf_regno (XEXP (dest, 0));
 
+	    if (fde
+	        && fde->stack_realign
+		&& REG_P (src)
+		&& REGNO (src) == HARD_FRAME_POINTER_REGNUM)
+	      {
+	        gcc_assert (cur_cfa->reg != dw_frame_pointer_regnum);
+	        cur_trace->cfa_store.offset = 0;
+	        fde->rule18 = 1;
+	      }
+
 	    if (cur_cfa->reg == regno)
 	      offset = -cur_cfa->offset;
 	    else if (cur_trace->cfa_store.reg == regno)
-- 
2.27.0