search for: l00082

On 16/01/2014, 23:47 , Andrew Trick wrote: > > On Jan 15, 2014, at 4:13 PM, Diego Novillo <dnovillo at google.com > <mailto:dnovillo at google.com>> wrote: > >> Chandler also pointed me at the vectorizer, which has its own >> unroller. However, the vectorizer only unrolls enough to serve the >> target, it's not as general as the runtime-triggered

...analysis to decide whether we unroll it or not. >> > > I assume the other two loops are quantum_cnot's <http://sourcecodebrowser.com/libquantum/0.2.4/gates_8c_source.html#l00054> and quantum_toffoli's <http://sourcecodebrowser.com/libquantum/0.2.4/gates_8c_source.html#l00082>. > > The problem for the unroller in the loop vectorizer is that it wants to if-convert those loops. The conditional store prevents if-conversion because we can’t introduce a store on a path where there was none before: <http://llvm.org/docs/Atomics.html#optimization-outside-atomic&gt...