[cfi] Add flag to always generate .debug_frame
This adds a flag to LLVM and clang to always generate a .debug_frame
section, even if other debug information is not being generated. In
situations where .eh_frame would normally be emitted, both .debug_frame
and .eh_frame will be used.
Differential Revision: https://reviews.llvm.org/D67216
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index f197a67..0775d10 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -769,6 +769,9 @@
Opts.DebugFwdTemplateParams = Args.hasArg(OPT_debug_forward_template_params);
Opts.EmbedSource = Args.hasArg(OPT_gembed_source);
+ Opts.ForceDwarfFrameSection =
+ Args.hasFlag(OPT_fforce_dwarf_frame, OPT_fno_force_dwarf_frame, false);
+
for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ))
Opts.DebugPrefixMap.insert(StringRef(Arg).split('='));