search for: consthoist

...emember simplifyCFG also doesn't use dominator tree to save the effort to maintain it on the fly. So maybe it is easier to separate CGP into two parts: which does need dominator tree and doesn't. Those transformations which don't need dominator tree can stay together. Currently, I know consthoisting is another potential CGP transformation but left out because of its need of dominator tree. But consthoisting has already evolved to contain a substantial amount of code so may be better to stay as a separate pass. Thanks, Wei. > >> >> Eli suggested me to ask for more opinions b...

...fo -targetpassconfig -no-aa -tbaa -scoped-noalias -assumption-tracker -basicaa -collector-metadata -machinemoduleinfo -machine-branch-prob -jump-instr-tables -atomic-expand -verify -verify-di -domtree -loops -loop-simplify -scalar-evolution -iv-users -loop-reduce -gc-lowering -unreachableblockelim -consthoist -partially-inline-libcalls -codegenprepare -rewrite-symbols -verify-di -stack-protector -verify -domtree -loops -branch-prob -machinedomtree -expand-isel-pseudos -tailduplication -opt-phis -machinedomtree -slotindexes -stack-coloring -localstackalloc -dead-mi-elimination -machinedomtree -machine-lo...

...tter-instcombine -regallocfast -speculative-execution -stackmap-liveness -tbaa-scoped-noalias -vector-combine -verify -write-bitcode not contained in multi O3 (count=67) -attributor -block-freq-loop-simplify -branch-folder -break-false-deps -callsite-splitting-ipsccp -codegenprepare -consthoist -dead-mi-elimination -detect-dead-lanes -early-ifcvt -early-machinelicm -early-tailduplication -expandmemcmp -greedy -interleaved-access -iv-users -lazy-block-freq-opt-remark-emitter -livedebugvars -liveintervals -liveregmatrix -livestacks -livevars -loop-reduce -loop-simplify-lcss...

...ode >> >> not contained in multi O3 (count=67) >> >> -attributor >> >> -block-freq-loop-simplify >> >> -branch-folder >> >> -break-false-deps >> >> -callsite-splitting-ipsccp >> >> -codegenprepare >> >> -consthoist >> >> -dead-mi-elimination >> >> -detect-dead-lanes >> >> -early-ifcvt >> >> -early-machinelicm >> >> -early-tailduplication >> >> -expandmemcmp >> >> -greedy >> >> -interleaved-access >> >>...

In http://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-20120827/063200.html, consecutive bitfields are wrapped as a group and represented as a large integer and emits loads stores and bit operations appropriate for extracting bits from within it. It fixes the problem of violating C++11 memory model that original widen load/store of bitfield was facing. It also brings more coalescing