Add -dwarf-debug-flags, which provides a way to embed the cc1 level options used
to compile a translation unit into the debug info for that file.
- Used by parts of Darwin build process to check compiler flags, etc.
- <rdar://problem/7256886> clang does not emit AT_APPLE_flags
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91661 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 0a592b2..4147057 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -122,6 +122,10 @@
Res.push_back("-disable-llvm-optzns");
if (Opts.DisableRedZone)
Res.push_back("-disable-red-zone");
+ if (!Opts.DwarfDebugFlags.empty()) {
+ Res.push_back("-dwarf-debug-flags");
+ Res.push_back(Opts.DwarfDebugFlags);
+ }
if (!Opts.MergeAllConstants)
Res.push_back("-fno-merge-all-constants");
if (Opts.NoCommon)
@@ -749,6 +753,7 @@
Opts.DebugInfo = Args.hasArg(OPT_g);
Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
+ Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
Opts.NoCommon = Args.hasArg(OPT_fno_common);
Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);