forked from OSchip/llvm-project
b8a330c42a
This algorithm (explained more in the source code) takes into account global redundancies by building a "pair map" to find common subexprs. The primary motivation of this is to handle situations like foo = (a * b) * c bar = (a * d) * c where we currently don't identify that "a * c" is redundant. Accordingly, it prioritizes the emission of a * c so that CSE can remove the redundant calculation later. Does not change the actual reassociation algorithm -- only the order in which the reassociated operand chain is reconstructed. Gives ~1.5% floating point math instruction count reduction on a large offline suite of graphics shaders. llvm-svn: 320515 |
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| .. | ||
| 2002-05-15-AgressiveSubMove.ll | ||
| 2002-05-15-MissedTree.ll | ||
| 2002-05-15-SubReassociate.ll | ||
| 2002-07-09-DominanceProblem.ll | ||
| 2003-08-12-InfiniteLoop.ll | ||
| 2005-09-01-ArrayOutOfBounds.ll | ||
| 2006-04-27-ReassociateVector.ll | ||
| 2011-01-26-UseAfterFree.ll | ||
| 2012-05-08-UndefLeak.ll | ||
| 2012-06-08-InfiniteLoop.ll | ||
| absorption.ll | ||
| add_across_block_crash.ll | ||
| basictest.ll | ||
| canonicalize-neg-const.ll | ||
| commute.ll | ||
| crash.ll | ||
| crash2.ll | ||
| deadcode.ll | ||
| erase_inst_made_change.ll | ||
| factorize-again.ll | ||
| fast-AgressiveSubMove.ll | ||
| fast-ArrayOutOfBounds.ll | ||
| fast-MissedTree.ll | ||
| fast-ReassociateVector.ll | ||
| fast-SubReassociate.ll | ||
| fast-basictest.ll | ||
| fast-fp-commute.ll | ||
| fast-mightymul.ll | ||
| fast-multistep.ll | ||
| fp-commute.ll | ||
| fp-expr.ll | ||
| inverses.ll | ||
| keep-debug-loc.ll | ||
| looptest.ll | ||
| mightymul.ll | ||
| min_int.ll | ||
| mixed-fast-nonfast-fp.ll | ||
| mulfactor.ll | ||
| multistep.ll | ||
| negation.ll | ||
| negation1.ll | ||
| no-op.ll | ||
| optional-flags.ll | ||
| otherops.ll | ||
| pr12245.ll | ||
| pr21205.ll | ||
| pr28367.ll | ||
| propagate-flags.ll | ||
| reassoc-intermediate-fnegs.ll | ||
| reassociate-deadinst.ll | ||
| repeats.ll | ||
| secondary.ll | ||
| shift-factor.ll | ||
| shifttest.ll | ||
| subtest.ll | ||
| vaarg_movable.ll | ||
| wrap-flags.ll | ||
| xor_reassoc.ll | ||