diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Scalar/LoopUnrollPass.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/LoopUnrollPass.cpp b/lib/Transforms/Scalar/LoopUnrollPass.cpp index 967ce93a24..9c5c591223 100644 --- a/lib/Transforms/Scalar/LoopUnrollPass.cpp +++ b/lib/Transforms/Scalar/LoopUnrollPass.cpp @@ -27,7 +27,7 @@ using namespace llvm; static cl::opt<unsigned> -UnrollThreshold("unroll-threshold", cl::init(200), cl::Hidden, +UnrollThreshold("unroll-threshold", cl::init(0), cl::Hidden, cl::desc("The cut-off point for automatic loop unrolling")); static cl::opt<unsigned> @@ -105,7 +105,7 @@ static unsigned ApproximateLoopSize(const Loop *L, unsigned &NumCalls) { unsigned SizeDecrease = Metrics.CountCodeReductionForConstant(IndVar); // NOTE: Because SizeDecrease is a fuzzy estimate, we don't want to allow // it to totally negate the cost of unrolling a loop. - SizeDecrease = SizeDecrease > LoopSize / 2 ? LoopSize : SizeDecrease; + SizeDecrease = SizeDecrease > LoopSize / 2 ? LoopSize / 2 : SizeDecrease; } // Don't allow an estimate of size zero. This would allows unrolling of loops |