Now that llvm-dwarfdump supports flags to specify which DWARF section to dump,
use them in tests that run llvm-dwarfdump. This is in order to make tests as
specific as possible.

llvm-svn: 173498
diff --git a/llvm/test/CodeGen/X86/dwarf-comp-dir.ll b/llvm/test/CodeGen/X86/dwarf-comp-dir.ll
index c64752c..63e6167 100644
--- a/llvm/test/CodeGen/X86/dwarf-comp-dir.ll
+++ b/llvm/test/CodeGen/X86/dwarf-comp-dir.ll
@@ -1,5 +1,5 @@
 ; RUN: llc %s -o %t -filetype=obj
-; RUN: llvm-dwarfdump %t | FileCheck %s
+; RUN: llvm-dwarfdump -debug-dump=line %t | FileCheck %s
 
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"