commit 553927a78adaeb5d1dfd6dbd24fa7239fd463412
author Douglas Katzman <dougk@google.com> Mon Sep 14 20:31:28 2015 +0000
committer Douglas Katzman <dougk@google.com> Mon Sep 14 20:31:28 2015 +0000
tree a167af03bbedafa2721992098bb62e25834ec18e
parent 6614d8d2308f2571a79592cdd4b4611a1e072898

Driver should forward at most one gdwarf-N flag to cc1as.

llvm-svn: 247611

clang/lib/Driver/Tools.cpp

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 0adc05c..1b79ed7 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -3769,14 +3769,12 @@
           Triple.getOS() == llvm::Triple::Solaris)
         CmdArgs.push_back("-gdwarf-2");
       SplitDwarfArg = nullptr;
-    } else if (A->getOption().matches(options::OPT_gdwarf_2))
-      CmdArgs.push_back("-gdwarf-2");
-    else if (A->getOption().matches(options::OPT_gdwarf_3))
-      CmdArgs.push_back("-gdwarf-3");
-    else if (A->getOption().matches(options::OPT_gdwarf_4))
-      CmdArgs.push_back("-gdwarf-4");
-    else if (!A->getOption().matches(options::OPT_g0) &&
-             !A->getOption().matches(options::OPT_ggdb0)) {
+    } else if (A->getOption().matches(options::OPT_gdwarf_2) ||
+               A->getOption().matches(options::OPT_gdwarf_3) ||
+               A->getOption().matches(options::OPT_gdwarf_4)) {
+      A->render(Args, CmdArgs);
+    } else if (!A->getOption().matches(options::OPT_g0) &&
+               !A->getOption().matches(options::OPT_ggdb0)) {
       // Default is dwarf-2 for Darwin, OpenBSD, FreeBSD and Solaris.
       const llvm::Triple &Triple = getToolChain().getTriple();
       if (Triple.isOSDarwin() || Triple.getOS() == llvm::Triple::OpenBSD ||
@@ -5550,12 +5548,9 @@
       if (!A->getOption().matches(options::OPT_g0))
         CmdArgs.push_back("-g");
 
-    if (Args.hasArg(options::OPT_gdwarf_2))
-      CmdArgs.push_back("-gdwarf-2");
-    if (Args.hasArg(options::OPT_gdwarf_3))
-      CmdArgs.push_back("-gdwarf-3");
-    if (Args.hasArg(options::OPT_gdwarf_4))
-      CmdArgs.push_back("-gdwarf-4");
+    if (Arg *A = Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
+                                 options::OPT_gdwarf_4))
+      A->render(Args, CmdArgs);
 
     // Add the -fdebug-compilation-dir flag if needed.
     addDebugCompDirArg(Args, CmdArgs);