Driver part of debugger tuning.

Adds driver options named -glldb and -gsce to mean -g plus tuning for
lldb and SCE debuggers respectively; the existing -ggdb option does
the same for gdb. Existing options -ggdb0, -ggdb1 etc. unpack into
-ggdb -g<N>.  (There will not be -glldb<N> or -gsce<N> options.) The
tuning gets a target-specific default in the driver, and is passed
into cc1 with the new -debugger-tuning option.

As fallout, fixes where '-gsplit-dwarf -g0' would ignore the -g0 part
on Linux.

Differential Revision: http://reviews.llvm.org/D15651

llvm-svn: 256104

1 files changed, 10 insertions, 0 deletions

diff --git a/clang/lib/Driver/ToolChains.h b/clang/lib/Driver/ToolChains.h
index 2661e3d71f0..f4b6b1529b3 100644
--- a/clang/lib/Driver/ToolChains.h
+++ b/clang/lib/Driver/ToolChains.h
@@ -566,6 +566,9 @@ public:
   // Until dtrace (via CTF) and LLDB can deal with distributed debug info,
   // Darwin defaults to standalone/full debug info.
   bool GetDefaultStandaloneDebug() const override { return true; }
+  llvm::DebuggerKind getDefaultDebuggerTuning() const override {
+    return llvm::DebuggerKind::LLDB;
+  }
 
   /// }
 
@@ -727,6 +730,9 @@ public:
   // Until dtrace (via CTF) and LLDB can deal with distributed debug info,
   // FreeBSD defaults to standalone/full debug info.
   bool GetDefaultStandaloneDebug() const override { return true; }
+  llvm::DebuggerKind getDefaultDebuggerTuning() const override {
+    return llvm::DebuggerKind::LLDB;
+  }
 
 protected:
   Tool *buildAssembler() const override;
@@ -1122,6 +1128,10 @@ public:
     return 2; // SSPStrong
   }
 
+  llvm::DebuggerKind getDefaultDebuggerTuning() const override {
+    return llvm::DebuggerKind::SCE;
+  }
+
   SanitizerMask getSupportedSanitizers() const override;
 
 protected: