Displaying 1 result from an estimated 1 matches for "c047b139".
2016 Aug 17
2
Cost model is missing in InstCombiner
Hi,
I think canEvaluateTruncated() in InstCombiner needs use cost model to decide whether perform optimization or not. Without cost model from TargetTransformInfo, aggressively optimizing IR in vector types according to the number of bits demanded may lead to scalarization of vector operations. For example, if the input IR is:
%wide.load25 = load <32 x i8>, <32 x i8>* %231, align