Recommit CC1 part of debugger tuning; pass through setting from driver to LLVM.

Reapplies r256063, except instead of frugally re-using an LLVM enum,
we define a Clang enum, to avoid exposing too much LLVM interface.

Differential Revision: http://reviews.llvm.org/D15650

llvm-svn: 256078

5 files changed, 31 insertions, 0 deletions

diff --git a/clang/include/clang/Driver/CC1Options.td b/clang/include/clang/Driver/CC1Options.td
index d510e19ea91..d7f42a991a8 100644
--- a/clang/include/clang/Driver/CC1Options.td
+++ b/clang/include/clang/Driver/CC1Options.td
@@ -134,6 +134,7 @@ let Flags = [CC1Option, CC1AsOption, NoDriverOption] in {
 
 def debug_info_kind_EQ : Joined<["-"], "debug-info-kind=">;
 def dwarf_version_EQ : Joined<["-"], "dwarf-version=">;
+def debugger_tuning_EQ : Joined<["-"], "debugger-tuning=">;
 def fdebug_compilation_dir : Separate<["-"], "fdebug-compilation-dir">,
   HelpText<"The compilation directory to embed in the debug info.">;
 def dwarf_debug_flags : Separate<["-"], "dwarf-debug-flags">,
diff --git a/clang/include/clang/Frontend/CodeGenOptions.def b/clang/include/clang/Frontend/CodeGenOptions.def
index 795d7e9bce8..2e9205fc842 100644
--- a/clang/include/clang/Frontend/CodeGenOptions.def
+++ b/clang/include/clang/Frontend/CodeGenOptions.def
@@ -183,6 +183,9 @@ VALUE_CODEGENOPT(SSPBufferSize, 32, 0)
 /// The kind of generated debug info.
 ENUM_CODEGENOPT(DebugInfo, DebugInfoKind, 3, NoDebugInfo)
 
+/// Tune the debug info for this debugger.
+ENUM_CODEGENOPT(DebuggerTuning, DebuggerKind, 2, DebuggerKindDefault)
+
 /// Dwarf version. Version zero indicates to LLVM that no DWARF should be
 /// emitted.
 VALUE_CODEGENOPT(DwarfVersion, 3, 0)
diff --git a/clang/include/clang/Frontend/CodeGenOptions.h b/clang/include/clang/Frontend/CodeGenOptions.h
index 5bf8f8b92b4..fac6f1a038f 100644
--- a/clang/include/clang/Frontend/CodeGenOptions.h
+++ b/clang/include/clang/Frontend/CodeGenOptions.h
@@ -82,6 +82,13 @@ public:
     FullDebugInfo         /// Generate complete debug info.
   };
 
+  enum DebuggerKind {
+    DebuggerKindDefault,
+    DebuggerKindGDB,
+    DebuggerKindLLDB,
+    DebuggerKindSCE
+  };
+
   enum TLSModel {
     GeneralDynamicTLSModel,
     LocalDynamicTLSModel,
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index 784e9c7ba5f..79aff4f4968 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -553,6 +553,19 @@ TargetMachine *EmitAssemblyHelper::CreateTargetMachine(bool MustCreateTM) {
   Options.DataSections = CodeGenOpts.DataSections;
   Options.UniqueSectionNames = CodeGenOpts.UniqueSectionNames;
   Options.EmulatedTLS = CodeGenOpts.EmulatedTLS;
+  switch (CodeGenOpts.getDebuggerTuning()) {
+  case CodeGenOptions::DebuggerKindGDB:
+    Options.DebuggerTuning = llvm::DebuggerKind::GDB;
+    break;
+  case CodeGenOptions::DebuggerKindLLDB:
+    Options.DebuggerTuning = llvm::DebuggerKind::LLDB;
+    break;
+  case CodeGenOptions::DebuggerKindSCE:
+    Options.DebuggerTuning = llvm::DebuggerKind::SCE;
+    break;
+  default:
+    break;
+  }
 
   Options.MCOptions.MCRelaxAll = CodeGenOpts.RelaxAll;
   Options.MCOptions.MCSaveTempLabels = CodeGenOpts.SaveTempLabels;
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index c6068d7d94d..7fe0a867535 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -405,6 +405,13 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
             .Case("limited", CodeGenOptions::LimitedDebugInfo)
             .Case("standalone", CodeGenOptions::FullDebugInfo));
   }
+  if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) {
+    Opts.setDebuggerTuning(
+        llvm::StringSwitch<CodeGenOptions::DebuggerKind>(A->getValue())
+            .Case("gdb", CodeGenOptions::DebuggerKindGDB)
+            .Case("lldb", CodeGenOptions::DebuggerKindLLDB)
+            .Case("sce", CodeGenOptions::DebuggerKindSCE));
+  }
   Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags);
   Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
   Opts.EmitCodeView = Args.hasArg(OPT_gcodeview);