[llvm-commits] [llvm] r135924 - /llvm/trunk/lib/Target/X86/X86FrameLowering.cpp

[Bill Wendling]

Author: void
Date: Mon Jul 25 13:04:49 2011
New Revision: 135924

URL: http://llvm.org/viewvc/llvm-project?rev=135924&view=rev
Log:
Changed disabled code into a flag.

Modified:
    llvm/trunk/lib/Target/X86/X86FrameLowering.cpp

Modified: llvm/trunk/lib/Target/X86/X86FrameLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86FrameLowering.cpp?rev=135924&r1=135923&r2=135924&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86FrameLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86FrameLowering.cpp Mon Jul 25 13:04:49 2011
@@ -34,6 +34,12 @@
 // FIXME: completely move here.
 extern cl::opt<bool> ForceStackAlign;
 
+// FIXME: Remove once linker support is available.
+static cl::opt<bool>
+GenerateCompactUnwind("gen-compact-unwind",
+                      cl::desc("Generate compact unwind encoding"),
+                      cl::Hidden);
+
 bool X86FrameLowering::hasReservedCallFrame(const MachineFunction &MF) const {
   return !MF.getFrameInfo()->hasVarSizedObjects();
 }
@@ -897,7 +903,7 @@
   }
 
   // Darwin 10.7 and greater has support for compact unwind encoding.
-  if (false && // FIXME: Enable once linker support is available.
+  if (GenerateCompactUnwind &&
       STI.isTargetDarwin() && !STI.getTargetTriple().isMacOSXVersionLT(10, 6))
     MMI.setCompactUnwindEncoding(getCompactUnwindEncoding(MF));
 }