diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/LoopUnrollPeel.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/LoopUnrollPeel.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Utils/LoopUnrollPeel.cpp b/llvm/lib/Transforms/Utils/LoopUnrollPeel.cpp index 7a168ff..cdf4826 100644 --- a/llvm/lib/Transforms/Utils/LoopUnrollPeel.cpp +++ b/llvm/lib/Transforms/Utils/LoopUnrollPeel.cpp @@ -289,8 +289,10 @@ void llvm::computePeelCount(Loop *L, unsigned LoopSize, if (!canPeel(L)) return; - // Only try to peel innermost loops. - if (!L->empty()) + // Only try to peel innermost loops by default. + // The constraint can be relaxed by the target in TTI.getUnrollingPreferences + // or by the flag -unroll-allow-loop-nests-peeling. + if (!UP.AllowLoopNestsPeeling && !L->empty()) return; // If the user provided a peel count, use that. |