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2017 Jun 17
5
LoopVectorize fails to vectorize loops with induction variables with PtrToInt/IntToPtr conversions
...; <label>:28: ; preds = %27, %5 > ret void > } If we compile only the "op" function while activation the debug mode, here is the output: > $ clang -O2 -S -emit-llvm op_zip_iterator.cpp -std=c++11 -o - -fno-vectorize |~/dev/epona-llvm/build_debug_shared/bin/opt -debug -debug-only loop-vectorize -O2 -S > > LV: Checking a loop in "_Z2opPi16add_zip_iteratorS0_" from <stdin> > LV: Loop hints: force=? width=0 unroll=0 > LV: Found a loop: > LV: Found an induction variable. > LV: Found an induction variable. > LV:...