Support for -Wa,-compress-debug-sections.

Also, while I'm here, support -nocompress-debug-sections too.

llvm-svn: 204959

3 files changed, 11 insertions, 1 deletions

diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index eee32925a78..17f5f4d6336 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -443,6 +443,9 @@ TargetMachine *EmitAssemblyHelper::CreateTargetMachine(bool MustCreateTM) {
   if (CodeGenOpts.DisableIntegratedAS)
     Options.DisableIntegratedAS = true;
 
+  if (CodeGenOpts.CompressDebugSections)
+    Options.CompressDebugSections = true;
+
   // Set frame pointer elimination mode.
   if (!CodeGenOpts.DisableFPElim) {
     Options.NoFramePointerElim = false;
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 5b997e7d379..756815147c6 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -1724,6 +1724,7 @@ static void CollectArgsForIntegratedAssembler(Compilation &C,
 
     // When using an integrated assembler, translate -Wa, and -Xassembler
     // options.
+    bool CompressDebugSections = false;
     for (arg_iterator it = Args.filtered_begin(options::OPT_Wa_COMMA,
                                                options::OPT_Xassembler),
            ie = Args.filtered_end(); it != ie; ++it) {
@@ -1749,7 +1750,10 @@ static void CollectArgsForIntegratedAssembler(Compilation &C,
           CmdArgs.push_back("-mnoexecstack");
         } else if (Value == "-compress-debug-sections" ||
                    Value == "--compress-debug-sections") {
-          D.Diag(diag::warn_missing_debug_compression);
+          CompressDebugSections = true;
+        } else if (Value == "-nocompress-debug-sections" ||
+                   Value == "--nocompress-debug-sections") {
+          CompressDebugSections = false;
         } else if (Value.startswith("-I")) {
           CmdArgs.push_back(Value.data());
           // We need to consume the next argument if the current arg is a plain
@@ -1762,6 +1766,8 @@ static void CollectArgsForIntegratedAssembler(Compilation &C,
         }
       }
     }
+    if (CompressDebugSections)
+      CmdArgs.push_back("-compress-debug-sections");
 }
 
 // Until ARM libraries are build separately, we have them all in one library
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index d744865159e..b9706e8263b 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -447,6 +447,7 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
   Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
   Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
   Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
+  Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
   Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
   Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
   Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist);