[PATCH] D55749: [Driver] Automatically enable -munwind-tables if -fseh-exceptions is enabled

[Martin Storsjö via Phabricator via cfe-commits]

mstorsjo updated this revision to Diff 178513.
mstorsjo marked an inline comment as done.
mstorsjo added a comment.

Moved the added code to `toolchains::MinGW::IsUnwindTablesDefault`.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D55749/new/

https://reviews.llvm.org/D55749

Files:
  lib/Driver/ToolChains/MinGW.cpp
  test/Driver/windows-exceptions.cpp


Index: test/Driver/windows-exceptions.cpp
===================================================================
--- test/Driver/windows-exceptions.cpp
+++ test/Driver/windows-exceptions.cpp
@@ -2,8 +2,11 @@
 // RUN: %clang -target x86_64-windows-msvc -c %s -### 2>&1 | FileCheck -check-prefix=MSVC %s
 // RUN: %clang -target i686-windows-gnu -c %s -### 2>&1 | FileCheck -check-prefix=MINGW-DWARF %s
 // RUN: %clang -target x86_64-windows-gnu -c %s -### 2>&1 | FileCheck -check-prefix=MINGW-SEH %s
+// RUN: %clang -target aarch64-windows-gnu -c %s -### 2>&1 | FileCheck -check-prefix=MINGW-DWARF %s
+// RUN: %clang -target aarch64-windows-gnu -fseh-exceptions -c %s -### 2>&1 | FileCheck -check-prefix=MINGW-SEH %s
 
 MSVC-NOT: -fdwarf-exceptions
 MSVC-NOT: -fseh-exceptions
 MINGW-DWARF: -fdwarf-exceptions
+MINGW-SEH: -munwind-tables
 MINGW-SEH: -fseh-exceptions
Index: lib/Driver/ToolChains/MinGW.cpp
===================================================================
--- lib/Driver/ToolChains/MinGW.cpp
+++ lib/Driver/ToolChains/MinGW.cpp
@@ -429,6 +429,12 @@
 }
 
 bool toolchains::MinGW::IsUnwindTablesDefault(const ArgList &Args) const {
+  Arg *ExceptionArg = Args.getLastArg(options::OPT_fsjlj_exceptions,
+                                      options::OPT_fseh_exceptions,
+                                      options::OPT_fdwarf_exceptions);
+  if (ExceptionArg &&
+      ExceptionArg->getOption().matches(options::OPT_fseh_exceptions))
+    return true;
   return getArch() == llvm::Triple::x86_64;
 }
 


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