search for: splittedblock19

Displaying 1 result from an estimated 1 matches for "splittedblock19".

Did you mean: splittedblock1
2019 Feb 25
3
Why is there still ineffective code after -o3 optimization?
...e %input, double* dereferenceable(8) %o0) local_unnamed_addr #0 { The ll below has been optimized using opt -O3 -S input.ll -o out.ll The cfg is plotted as png here: https://ibb.co/f1B0rnm My question is: why is there still some unnecessary 'lint' in the optimization result? E.G. from the splittedblock19 onwards: there is one effective instruction store double 0x3FF787378698A951, double* %o0 everything what follows (conditional branch, splittedblock38, 21, 42) could safely be removed (just leaving a 'ret void' after the store instruction). Why is this not removed? Is there a pass (combin...