Avoid creating expensive comment string if it's not going to be printed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52992 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 6 deletions

diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp
index 342aa0175d..0764968b23 100644
--- a/lib/Target/TargetMachine.cpp
+++ b/lib/Target/TargetMachine.cpp
@@ -36,8 +36,9 @@ namespace llvm {
   CodeModel::Model CMModel;
   bool PerformTailCallOpt;
   bool OptimizeForSize;
-  bool RealignStack;
   unsigned StackAlignment;
+  bool RealignStack;
+  bool VerboseAsm;
 }
 
 static cl::opt<bool, true> PrintCode("print-machineinstrs",
@@ -138,17 +139,23 @@ EnableOptimizeForSize("optimize-size",
                       cl::location(OptimizeForSize),
                       cl::init(false));
 
+static cl::opt<unsigned, true>
+OverrideStackAlignment("stack-alignment",
+                       cl::desc("Override default stack alignment"),
+                       cl::location(StackAlignment),
+                       cl::init(0));
+
 static cl::opt<bool, true>
 EnableRealignStack("realign-stack",
                    cl::desc("Realign stack if needed"),
                    cl::location(RealignStack),
                    cl::init(true));
 
-static cl::opt<unsigned, true>
-OverrideStackAlignment("stack-alignment",
-                       cl::desc("Override default stack alignment"),
-                       cl::location(StackAlignment),
-                       cl::init(0));
+static cl::opt<bool, true>
+AsmVerbose("asm-verbose", cl::desc("Add comments to directives."),
+           cl::location(VerboseAsm),
+           cl::init(false));
+
 
 //---------------------------------------------------------------------------
 // TargetMachine Class