[clang] [Cygwin] Cygwin -fuse-cxa-atexit (PR #74913)

[徐持恒 Xu Chiheng via cfe-commits]

https://github.com/xu-chiheng updated https://github.com/llvm/llvm-project/pull/74913

>From 75a8486443ef200abe12b4047ac89011ada15802 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E6=8C=81=E6=81=92=20Xu=20Chiheng?=
 <chiheng.xu at gmail.com>
Date: Sat, 9 Dec 2023 13:04:02 +0800
Subject: [PATCH 1/5] 1

---
 clang/lib/Driver/ToolChains/Clang.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index eb26bfade47b7a..df062ccc9021f7 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -6656,7 +6656,8 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
   // -fuse-cxa-atexit is default.
   if (!Args.hasFlag(
           options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
-          !RawTriple.isOSAIX() && !RawTriple.isOSWindows() &&
+          !RawTriple.isOSAIX() && !RawTriple.isWindowsGNUEnvironment() &&
+              !RawTriple.isWindowsMSVCEnvironment() &&
               ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
                RawTriple.hasEnvironment())) ||
       KernelOrKext)

>From 899b095dd1953fc8a766dee221723dfbf1e3a3e5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E6=8C=81=E6=81=92=20Xu=20Chiheng?=
 <chiheng.xu at gmail.com>
Date: Sat, 9 Dec 2023 13:24:01 +0800
Subject: [PATCH 2/5] 1

---
 clang/lib/Driver/ToolChains/Clang.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index df062ccc9021f7..eb26bfade47b7a 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -6656,8 +6656,7 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
   // -fuse-cxa-atexit is default.
   if (!Args.hasFlag(
           options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
-          !RawTriple.isOSAIX() && !RawTriple.isWindowsGNUEnvironment() &&
-              !RawTriple.isWindowsMSVCEnvironment() &&
+          !RawTriple.isOSAIX() && !RawTriple.isOSWindows() &&
               ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
                RawTriple.hasEnvironment())) ||
       KernelOrKext)

>From 4fd5b816334bd8ccd8215f69f88dcbcc56f71857 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E6=8C=81=E6=81=92=20Xu=20Chiheng?=
 <chiheng.xu at gmail.com>
Date: Sat, 9 Dec 2023 13:39:22 +0800
Subject: [PATCH 3/5] 1

---
 clang/lib/Driver/ToolChains/Clang.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index eb26bfade47b7a..fd75ad033c4dca 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -6656,7 +6656,7 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
   // -fuse-cxa-atexit is default.
   if (!Args.hasFlag(
           options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
-          !RawTriple.isOSAIX() && !RawTriple.isOSWindows() &&
+          !RawTriple.isOSAIX() && !(RawTriple.isOSWindows() && !RawTriple.isWindowsCygwinEnvironment()) &&
               ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
                RawTriple.hasEnvironment())) ||
       KernelOrKext)

>From a51bba69eb1e2f7f509e42830e54ce71de99e74a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E6=8C=81=E6=81=92=20Xu=20Chiheng?=
 <chiheng.xu at gmail.com>
Date: Sat, 9 Dec 2023 13:44:11 +0800
Subject: [PATCH 4/5] 1

---
 clang/lib/Driver/ToolChains/Clang.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index fd75ad033c4dca..3e2c07399387d5 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -6656,7 +6656,9 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
   // -fuse-cxa-atexit is default.
   if (!Args.hasFlag(
           options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
-          !RawTriple.isOSAIX() && !(RawTriple.isOSWindows() && !RawTriple.isWindowsCygwinEnvironment()) &&
+          !RawTriple.isOSAIX() &&
+              !(RawTriple.isOSWindows() &&
+                !RawTriple.isWindowsCygwinEnvironment()) &&
               ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
                RawTriple.hasEnvironment())) ||
       KernelOrKext)

>From 3b906c82e613d08c6b153b355019dbf939045896 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E6=8C=81=E6=81=92=20Xu=20Chiheng?=
 <chiheng.xu at gmail.com>
Date: Sat, 9 Dec 2023 14:07:41 +0800
Subject: [PATCH 5/5] 1

---
 clang/lib/Driver/ToolChains/Clang.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index 3e2c07399387d5..e67adf3d6616e6 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -6658,7 +6658,7 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
           options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
           !RawTriple.isOSAIX() &&
               !(RawTriple.isOSWindows() &&
-                !RawTriple.isWindowsCygwinEnvironment()) &&
+                RawTriple.getEnvironment() != Triple::Cygnus) &&
               ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||
                RawTriple.hasEnvironment())) ||
       KernelOrKext)