This patch adds a new Clang compiler flag "-gline-tables-only".
It reduces the amount of emitted debug information:
1) DIEs in .debug_info have types DW_TAG_compile_unit, DW_TAG_subprogram,
DW_TAG_inlined_subroutine (for opt builds) and DW_TAG_lexical_block only.
2) .debug_str contains only function names.
3) No debug data for types/namespaces/variables is emitted.
4) The data in .debug_line is enough to produce valid stack traces with
function names and line numbers.
Reviewed by Eric Christopher.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156160 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index e8345fd..0635be6 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -184,6 +184,9 @@
switch (Opts.DebugInfo) {
case CodeGenOptions::NoDebugInfo:
break;
+ case CodeGenOptions::DebugLineTablesOnly:
+ Res.push_back("-gline-tables-only");
+ break;
case CodeGenOptions::LimitedDebugInfo:
Res.push_back("-g");
Res.push_back("-flimit-debug-info");
@@ -1148,7 +1151,9 @@
Opts.Inlining = Args.hasArg(OPT_fno_inline_functions) ?
CodeGenOptions::OnlyAlwaysInlining : Opts.Inlining;
- if (Args.hasArg(OPT_g_Flag)) {
+ if (Args.hasArg(OPT_gline_tables_only)) {
+ Opts.DebugInfo = CodeGenOptions::DebugLineTablesOnly;
+ } else if (Args.hasArg(OPT_g_Flag)) {
if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true))
Opts.DebugInfo = CodeGenOptions::LimitedDebugInfo;
else