Sanjoy Das cb24f8cc5c [LoopUnrolling] Fix loop size check for peeling ...

Summary:
We should check if loop size allows us to peel at least one iteration
before we do so.

Patch by Max Kazantsev!

Reviewers: sanjoy, mkuper, efriedma

Reviewed By: mkuper

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30632

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297122 91177308-0d34-0410-b5e6-96231b3b80d8

2017-03-07 06:03:15 +00:00

..

AArch64

Reapply "[LoopUnroll] Use the upper bound of the loop trip count to fullly unroll a loop"

2016-10-12 21:29:38 +00:00

AMDGPU

AMDGPU: Don't unroll for private with dynamic allocas

2017-02-03 19:36:00 +00:00

PowerPC

[LoopUnroll] Fix a PowerPC test broken by r277524.

2016-08-02 21:43:25 +00:00

X86

Adds the ability to use an epilog remainder loop during loop unrolling and makes

2016-04-05 12:19:35 +00:00

2004-05-13-DontUnrollTooMuch.ll

…

2005-03-06-BadLoopInfoUpdate.ll

…

2006-08-24-MultiBlockLoop.ll

…

2007-04-16-PhiUpdate.ll

…

2007-05-05-UnrollMiscomp.ll

…

2007-05-09-UnknownTripCount.ll

…

2007-11-05-Crash.ll

…

2011-08-08-PhiUpdate.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2011-08-09-IVSimplify.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2011-08-09-PhiUpdate.ll

…

2011-10-01-NoopTrunc.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

2012-04-09-unroll-indirectbr.ll

…

basic.ll

[PM] Teach LoopUnroll to update the LPM infrastructure as it unrolls

2017-01-25 02:49:01 +00:00

convergent.ll

[LoopUnroll] Respect the convergent attribute.

2016-03-14 23:15:34 +00:00

ephemeral.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

epilog_const_phi.ll

Add test missed in r296770.

2017-03-04 05:20:02 +00:00

full-unroll-bad-cost.ll

[PM] Simplify the new PM interface to the loop unroller and expose two

2017-01-26 02:13:50 +00:00

full-unroll-crashers.ll

[PM] Simplify the new PM interface to the loop unroller and expose two

2017-01-26 02:13:50 +00:00

full-unroll-heuristics-2.ll

[PM] Simplify the new PM interface to the loop unroller and expose two

2017-01-26 02:13:50 +00:00

full-unroll-heuristics-cmp.ll

[PM] Simplify the new PM interface to the loop unroller and expose two

2017-01-26 02:13:50 +00:00

full-unroll-heuristics-dce.ll

[PM] Simplify the new PM interface to the loop unroller and expose two

2017-01-26 02:13:50 +00:00

full-unroll-heuristics-geps.ll

[PM] Simplify the new PM interface to the loop unroller and expose two

2017-01-26 02:13:50 +00:00

full-unroll-heuristics-phi-prop.ll

[PM] Simplify the new PM interface to the loop unroller and expose two

2017-01-26 02:13:50 +00:00

full-unroll-heuristics.ll

[PM] Simplify the new PM interface to the loop unroller and expose two

2017-01-26 02:13:50 +00:00

full-unroll-keep-first-exit.ll

[PM] Simplify the new PM interface to the loop unroller and expose two

2017-01-26 02:13:50 +00:00

high-cost-trip-count-computation.ll

Adds the ability to use an epilog remainder loop during loop unrolling and makes

2016-04-05 12:19:35 +00:00

ignore-annotation-intrinsic-cost.ll

…

loop-remarks-with-hotness.ll

[LoopUnroll] Include hotness of region in opt remark

2016-07-29 19:29:47 +00:00

loop-remarks.ll

…

partial-unroll-const-bounds.ll

[PM] Simplify the new PM interface to the loop unroller and expose two

2017-01-26 02:13:50 +00:00

peel-loop-not-forced.ll

[LoopUnrolling] Fix loop size check for peeling

2017-03-07 06:03:15 +00:00

peel-loop-pgo.ll

[LoopUnroll] Enable PGO-based loop peeling by default.

2017-02-22 00:27:34 +00:00

peel-loop.ll

Update domtree incrementally in loop peeling.

2017-01-24 06:58:39 +00:00

pr10813.ll

…

pr11361.ll

…

pr14167.ll

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pr18861.ll

[Tests] Add one more case to LoopUnroll/pr18861.ll for better coverage.

2015-10-02 19:21:52 +00:00

pr27157.ll

[LoopUnroll] Fix the way we update DT after complete unrolling.

2016-04-06 21:47:12 +00:00

pr28132.ll

[LoopUnroll] Don't crash trying to unroll loop with EH pad exit

2016-06-15 00:19:56 +00:00

pr31718.ll

[LoopUnroll] First form LCSSA, then loop-simplify

2017-01-23 23:45:42 +00:00

rebuild_lcssa.ll

[LoopSimplify] When simplifying phis in loop-simplify, do it only if it preserves LCSSA form.

2016-09-27 21:03:45 +00:00

revisit.ll

The patch turns on epilogue unroll for loops with constant recurency start.

2017-03-02 17:38:46 +00:00

runtime-li.ll

[LoopUnroll] Properly update loopinfo for runtime unrolling by 2

2017-01-26 01:04:11 +00:00

runtime-loop1.ll

[PM] Teach LoopUnroll to update the LPM infrastructure as it unrolls

2017-01-25 02:49:01 +00:00

runtime-loop2.ll

[PM] Teach LoopUnroll to update the LPM infrastructure as it unrolls

2017-01-25 02:49:01 +00:00

runtime-loop3.ll

The patch fixes r296770

2017-03-02 19:41:38 +00:00

runtime-loop4.ll

[LoopUnroll] Switch the default value of -unroll-runtime-epilog back to its original value.

2016-08-02 21:24:14 +00:00

runtime-loop5.ll

The patch turns on epilogue unroll for loops with constant recurency start.

2017-03-02 17:38:46 +00:00

runtime-loop.ll

[PM] Teach LoopUnroll to update the LPM infrastructure as it unrolls

2017-01-25 02:49:01 +00:00

scevunroll.ll

Revert "[IndVarSimplify] Rewrite loop exit values with their initial values from loop preheader"

2015-11-03 07:14:39 +00:00

shifted-tripcount.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

tripcount-overflow.ll

[LoopUnroll] Switch the default value of -unroll-runtime-epilog back to its original value.

2016-08-02 21:24:14 +00:00

unloop.ll

[PM] Teach LoopUnroll to update the LPM infrastructure as it unrolls

2017-01-25 02:49:01 +00:00

unroll-cleanup.ll

[LoopUnroll] Switch the default value of -unroll-runtime-epilog back to its original value.

2016-08-02 21:24:14 +00:00

unroll-cleanuppad.ll

[LoopUnroll] Unroll loops which have exit blocks to EH pads

2016-05-03 03:57:40 +00:00

unroll-count.ll

The patch set unroll disable pragma when unroll

2016-06-08 20:21:24 +00:00

unroll-heuristics-pgo.ll

The patch turns on epilogue unroll for loops with constant recurency start.

2017-03-02 17:38:46 +00:00

unroll-opt-attribute.ll

Loop unroller: set thresholds for optsize and minsize functions to zero

2016-05-10 21:45:55 +00:00

unroll-pragmas-disabled.ll

[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

2015-02-27 21:17:42 +00:00

unroll-pragmas.ll

The patch turns on epilogue unroll for loops with constant recurency start.

2017-03-02 17:38:46 +00:00

update-loop-info-in-subloops.ll

[PM] Teach LoopUnroll to update the LPM infrastructure as it unrolls

2017-01-25 02:49:01 +00:00