If we're splitting the dwarf for fission and don't want to use the

integrated assembler then go ahead and still split the dwarf anyhow.

Add two tests, one to exercise existing behavior of not splitting
when we're just emitting assembly files and the other to test
that we split when we're not in integrated as mode.

llvm-svn: 183355

clang/lib/Driver/Tools.cpp

@@ -5887,6 +5887,14 @@ void gnutools::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
   const char *Exec =
     Args.MakeArgString(getToolChain().GetProgramPath("as"));
   C.addCommand(new Command(JA, *this, Exec, CmdArgs));
+
+  // Handle the debug info splitting at object creation time if we're
+  // creating an object.
+  // TODO: Currently only works on linux with newer objcopy.
+  if (Args.hasArg(options::OPT_gsplit_dwarf) &&
+      (getToolChain().getTriple().getOS() == llvm::Triple::Linux))
+    SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
+                   SplitDebugName(Args, Inputs));
 }
 
 static void AddLibgcc(llvm::Triple Triple, const Driver &D,

clang/test/Driver/split-debug.c

@@ -23,3 +23,13 @@
 // RUN: FileCheck -check-prefix=CHECK-OPTION < %t %s
 //
 // CHECK-OPTION: "-split-dwarf-file" "split-debug.dwo"
+
+// RUN: %clang -target x86_64-unknown-linux-gnu -gsplit-dwarf -S -### %s 2> %t
+// RUN: FileCheck -check-prefix=CHECK-ASM < %t %s
+//
+// CHECK-ASM-NOT: objcopy
+
+// RUN: %clang -target x86_64-unknown-linux-gnu -no-integrated-as -gsplit-dwarf -c -### %s 2> %t
+// RUN: FileCheck -check-prefix=CHECK-IAS < %t %s
+//
+// CHECK-IAS: objcopy