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archived-llvm/test/Transforms/LoopUnroll
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Florian Hahn 2d05b98044 [LoopUnroll] Allow unrolling if the unrolled size does not exceed loop size. 
Summary:
In the following cases, unrolling can be beneficial, even when
optimizing for code size:
 1) very low trip counts
 2) potential to constant fold most instructions after fully unrolling.

We can unroll in those cases, by setting the unrolling threshold to the
loop size. This might highlight some cost modeling issues and fixing
them will have a positive impact in general.

Reviewers: vsk, efriedma, dmgreen, paquette

Reviewed By: paquette

Differential Revision: https://reviews.llvm.org/D60265

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358586 91177308-0d34-0410-b5e6-96231b3b80d8
2019-04-17 15:57:43 +00:00
..
AArch64
[LoopUnroll] Allow unrolling if the unrolled size does not exceed loop size.
2019-04-17 15:57:43 +00:00
AMDGPU
Revert "Temporarily Revert "Add basic loop fusion pass.""
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ARM
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Hexagon
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PowerPC
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X86
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2004-05-13-DontUnrollTooMuch.ll
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2005-03-06-BadLoopInfoUpdate.ll
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2006-08-24-MultiBlockLoop.ll
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2007-04-16-PhiUpdate.ll
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2007-05-05-UnrollMiscomp.ll
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2007-05-09-UnknownTripCount.ll
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2007-11-05-Crash.ll
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2011-08-08-PhiUpdate.ll
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2011-08-09-IVSimplify.ll
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2011-08-09-PhiUpdate.ll
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2011-10-01-NoopTrunc.ll
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2012-04-09-unroll-indirectbr.ll
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basic.ll
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complete_unroll_profitability_with_assume.ll
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convergent.ll
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debug-info.ll
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disable_nonforced_count.ll
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disable_nonforced_enable.ll
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disable_nonforced_full.ll
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disable_nonforced.ll
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disable-loop-unrolling_forced.ll
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ephemeral.ll
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epilog_const_phi.ll
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followup.ll
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full-unroll-bad-cost.ll
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full-unroll-crashers.ll
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full-unroll-heuristics-2.ll
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full-unroll-heuristics-cmp.ll
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full-unroll-heuristics-dce.ll
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full-unroll-heuristics-geps.ll
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full-unroll-heuristics-phi-prop.ll
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full-unroll-heuristics.ll
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full-unroll-keep-first-exit.ll
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high-cost-trip-count-computation.ll
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ignore-annotation-intrinsic-cost.ll
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invalidate_right_loop.ll
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loop-remarks-with-hotness.ll
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loop-remarks.ll
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not-rotated.ll
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partial-unroll-const-bounds.ll
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peel-loop2.ll
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peel-loop-conditions.ll
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peel-loop-irreducible.ll
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peel-loop-negative.ll
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peel-loop-not-forced.ll
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peel-loop-pgo.ll
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peel-loop-scev-invalidate.ll
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peel-loop.ll
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pr10813.ll
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pr11361.ll
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pr14167.ll
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pr18861.ll
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pr27157.ll
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pr28132.ll
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pr31718.ll
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pr33437.ll
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rebuild_lcssa.ll
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revisit.ll
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runtime-epilog-debuginfo.ll
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runtime-li.ll
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runtime-loop1.ll
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runtime-loop2.ll
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runtime-loop3.ll
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runtime-loop4.ll
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runtime-loop5.ll
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runtime-loop-multiexit-dom-verify.ll
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runtime-loop-multiple-exits.ll
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runtime-loop-non-exiting-latch.ll
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runtime-loop.ll
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runtime-multiexit-heuristic.ll
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runtime-unroll-remainder.ll
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scevunroll.ll
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shifted-tripcount.ll
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tripcount-overflow.ll
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unloop.ll
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unroll-cleanup.ll
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unroll-cleanuppad.ll
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unroll-count.ll
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unroll-heuristics-pgo.ll
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unroll-loop-invalidation.ll
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unroll-maxcount.ll
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unroll-opt-attribute.ll
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unroll-pragmas-disabled.ll
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unroll-pragmas.ll
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update-loop-info-in-subloops.ll
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