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-rw-r--r--llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp b/llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
index 136f7d7e8de..31a98d86a54 100644
--- a/llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
+++ b/llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
@@ -15,6 +15,10 @@
/// - t2LoopDec - placed within in the loop body.
/// - t2LoopEnd - the loop latch terminator.
///
+/// In addition to this, we also look for the presence of the VCTP instruction,
+/// which determines whether we can generated the tail-predicated low-overhead
+/// loop form.
+///
//===----------------------------------------------------------------------===//
#include "ARM.h"
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