From 20672e48b36b5a0626725c569862757d35907be0 Mon Sep 17 00:00:00 2001 From: Owen Anderson Date: Thu, 9 Sep 2010 19:08:59 +0000 Subject: [PATCH] Fix typo in code to cap the loop code size reduction calculation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113526 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Transforms/Scalar/LoopUnrollPass.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/Transforms/Scalar/LoopUnrollPass.cpp b/lib/Transforms/Scalar/LoopUnrollPass.cpp index 967ce93a242..9c5c5912239 100644 --- a/lib/Transforms/Scalar/LoopUnrollPass.cpp +++ b/lib/Transforms/Scalar/LoopUnrollPass.cpp @@ -27,7 +27,7 @@ using namespace llvm; static cl::opt -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 @@ -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