Debug Info: support for gdwarf-2 gdwarf-3 gdwarf-4
These options will add a module flag with name "Dwarf Version".
The behavior flag is currently set to Warning, so when two values disagree,
a warning will be emitted.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184276 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 1407e10..d9316ec 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -318,7 +318,8 @@
if (Args.hasArg(OPT_gline_tables_only)) {
Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly);
- } else if (Args.hasArg(OPT_g_Flag)) {
+ } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) ||
+ Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) {
if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true))
Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo);
else
@@ -326,6 +327,15 @@
}
Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
+ if (Args.hasArg(OPT_gdwarf_2))
+ Opts.DwarfVersion = 2;
+ else if (Args.hasArg(OPT_gdwarf_3))
+ Opts.DwarfVersion = 3;
+ else if (Args.hasArg(OPT_gdwarf_4))
+ Opts.DwarfVersion = 4;
+ else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo)
+ // Default Dwarf version is 3 if we are generating debug information.
+ Opts.DwarfVersion = 3;
Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);