Update the comment. This feature is available only on Darwin at the moment. Though it's not Darwin-specific.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135951 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86FrameLowering.cpp b/lib/Target/X86/X86FrameLowering.cpp
index c64fbdb..cdc8305 100644
--- a/lib/Target/X86/X86FrameLowering.cpp
+++ b/lib/Target/X86/X86FrameLowering.cpp
@@ -34,7 +34,8 @@
// FIXME: completely move here.
extern cl::opt<bool> ForceStackAlign;
-// FIXME: Remove once linker support is available.
+// FIXME: Remove once linker support is available. The feature exists only on
+// Darwin at the moment.
static cl::opt<bool>
GenerateCompactUnwind("gen-compact-unwind",
cl::desc("Generate compact unwind encoding"),