From a072d50769ad339a1908c5ade01c8b5fd5af5546 Mon Sep 17 00:00:00 2001
From: dpd <doupengda@loongson.cn>
Date: Mon, 16 Mar 2026 16:56:27 +0800
Subject: [PATCH] Enable -fasynchronous-unwind-tables by default on Linux

---
 ...us-unwind-tables-by-default-on-Linux.patch | 66 +++++++++++++++++++
 llvm.spec                                     |  8 ++-
 2 files changed, 73 insertions(+), 1 deletion(-)
 create mode 100644 0001-Enable-fasynchronous-unwind-tables-by-default-on-Linux.patch

diff --git a/0001-Enable-fasynchronous-unwind-tables-by-default-on-Linux.patch b/0001-Enable-fasynchronous-unwind-tables-by-default-on-Linux.patch
new file mode 100644
index 0000000..ba4a4d8
--- /dev/null
+++ b/0001-Enable-fasynchronous-unwind-tables-by-default-on-Linux.patch
@@ -0,0 +1,66 @@
+From 0d41e462fcaecc3b82eea611bccfdde9a42156b5 Mon Sep 17 00:00:00 2001
+From: doupengda <doupengda@loongson.cn>
+Date: Mon, 16 Mar 2026 15:20:27 +0800
+Subject: [PATCH] Enable -fasynchronous-unwind-tables by default on Linux
+
+---
+ clang/lib/Driver/ToolChains/Gnu.cpp            |  2 ++
+ clang/test/Driver/loongarch-default-features.c |  9 ---------
+ clang/test/Driver/loongarch-features.c         | 16 ++++++++++++++++
+ 3 files changed, 18 insertions(+), 9 deletions(-)
+ delete mode 100644 clang/test/Driver/loongarch-default-features.c
+ create mode 100644 clang/test/Driver/loongarch-features.c
+
+diff --git a/clang/lib/Driver/ToolChains/Gnu.cpp b/clang/lib/Driver/ToolChains/Gnu.cpp
+index c5a240236..dc44e8673 100644
+--- a/clang/lib/Driver/ToolChains/Gnu.cpp
++++ b/clang/lib/Driver/ToolChains/Gnu.cpp
+@@ -2927,6 +2927,8 @@ Generic_GCC::getDefaultUnwindTableLevel(const ArgList &Args) const {
+   case llvm::Triple::ppc64le:
+   case llvm::Triple::riscv32:
+   case llvm::Triple::riscv64:
++  case llvm::Triple::loongarch32:
++  case llvm::Triple::loongarch64:	  
+   case llvm::Triple::x86:
+   case llvm::Triple::x86_64:
+   // Enable -funwind-tables on all architectures supported by Fedora:
+diff --git a/clang/test/Driver/loongarch-default-features.c b/clang/test/Driver/loongarch-default-features.c
+deleted file mode 100644
+index 90634bbcf..000000000
+--- a/clang/test/Driver/loongarch-default-features.c
++++ /dev/null
+@@ -1,9 +0,0 @@
+-// RUN: %clang --target=loongarch32 -S -emit-llvm %s -o - | FileCheck %s --check-prefix=LA32
+-// RUN: %clang --target=loongarch64 -S -emit-llvm %s -o - | FileCheck %s --check-prefix=LA64
+-
+-// LA32: "target-features"="+32bit"
+-// LA64: "target-features"="+64bit,+d,+f,+lsx,+ual"
+-
+-int foo(void) {
+-  return 3;
+-}
+diff --git a/clang/test/Driver/loongarch-features.c b/clang/test/Driver/loongarch-features.c
+new file mode 100644
+index 000000000..464eda982
+--- /dev/null
++++ b/clang/test/Driver/loongarch-features.c
+@@ -0,0 +1,16 @@
++// RUN: %clang --target=loongarch32 -S -emit-llvm %s -o - | FileCheck %s --check-prefix=LA32
++// RUN: %clang --target=loongarch64 -S -emit-llvm %s -o - | FileCheck %s --check-prefix=LA64
++
++// LA32: "target-features"="+32bit"
++// LA64: "target-features"="+64bit,+d,+f,+ual"
++
++// RUN: %clang --target=loongarch32-linux -### %s -fsyntax-only 2>&1 \
++// RUN:   | FileCheck %s --check-prefix=DEFAULT-LINUX
++// RUN: %clang --target=loongarch64-linux -### %s -fsyntax-only 2>&1 \
++// RUN:   | FileCheck %s --check-prefix=DEFAULT-LINUX
++
++// DEFAULT-LINUX: "-funwind-tables=2"
++
++int foo(void) {
++  return 3;
++}
+-- 
+2.43.7
+
diff --git a/llvm.spec b/llvm.spec
index b0a2a44..12af939 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -85,7 +85,7 @@
 ##region main package
 Name:		llvm
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}
-Release:	17%{?dist}
+Release:	18%{?dist}
 Summary:	The Low Level Virtual Machine
 
 License:	Apache-2.0 WITH LLVM-exception OR NCSA
@@ -276,6 +276,7 @@ Patch0421: 0017-LoongArch-Fix-test-cases-after-2dd8460d8a36.patch
 
 # distro self made patches
 Patch5000: 0001-Fix-mlir-pdll-lsp-server-coredump.patch
+Patch5001: 0001-Enable-fasynchronous-unwind-tables-by-default-on-Linux.patch
 
 BuildRequires:	gcc
 BuildRequires:	gcc-c++
@@ -2108,6 +2109,11 @@ fi
 
 
 %changelog
+* Mon Mar 16 2026 doupengda <doupengda@loongson.cn> - 17.0.6-18
+- [Type] other
+- [DESC] Enable -fasynchronous-unwind-tables by default on Linux
+- from https://github.com/llvm/llvm-project/pull/94711
+
 * Fri Dec 05 2025 Zhao Zhen <jeremiazhao@tencent.com> - 17.0.6-17
 - fixed unsafe-buffer-use in clang
 
-- 
Gitee