Add optimize-for-size knob.

llvm-svn: 48793

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/Target/TargetMachine.cpp b/llvm/lib/Target/TargetMachine.cpp
index 15164ca28df..b9a68789ab5 100644
--- a/llvm/lib/Target/TargetMachine.cpp
+++ b/llvm/lib/Target/TargetMachine.cpp
@@ -34,6 +34,7 @@ namespace llvm {
   Reloc::Model RelocationModel;
   CodeModel::Model CMModel;
   bool PerformTailCallOpt;
+  bool OptimizeForSize;
 }
 namespace {
   cl::opt<bool, true> PrintCode("print-machineinstrs",
@@ -123,6 +124,11 @@ namespace {
                            cl::desc("Turn on tail call optimization."),
                            cl::location(PerformTailCallOpt),
                            cl::init(false));
+  cl::opt<bool, true>
+  EnableOptimizeForSize("optimizeforsize",
+                        cl::desc("Optimize for size."),
+                           cl::location(OptimizeForSize),
+                           cl::init(false));
 }
 
 //---------------------------------------------------------------------------