Sam Parker 718c8a6a2a [LoopUnroll] Enable option to peel remainder loop ... On some targets, the penalty of executing runtime unrolling checks and then not the unrolled loop can be significantly detrimental to performance. This results in the need to be more conservative with the unroll count, keeping a trip count of 2 reduces the overhead as well as increasing the chance of the unrolled body being executed. But being conservative leaves performance gains on the table. This patch enables the unrolling of the remainder loop introduced by runtime unrolling. This can help reduce the overhead of misunrolled loops because the cost of non-taken branches is much less than the cost of the backedge that would normally be executed in the remainder loop. This allows larger unroll factors to be used without suffering performance loses with smaller iteration counts. Differential Revision: https://reviews.llvm.org/D36309 llvm-svn: 310824		2017-08-14 09:25:26 +00:00
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AArch64	[AArch64][Falkor] Try to avoid exhausting HW prefetcher resources when unrolling.	2017-06-28 18:53:09 +00:00
AMDGPU	AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel	2017-03-21 21:39:51 +00:00
ARM	[ARM] Enable partial and runtime unrolling	2017-07-25 08:51:30 +00:00
PowerPC	…
X86	…
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	…
2011-08-09-IVSimplify.ll	…
2011-08-09-PhiUpdate.ll	…
2011-10-01-NoopTrunc.ll	…
2012-04-09-unroll-indirectbr.ll	…
basic.ll	[PM] Split LoopUnrollPass and make partial unroller a function pass	2017-08-02 20:35:29 +00:00
convergent.ll	…
ephemeral.ll	…
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] Split LoopUnrollPass and make partial unroller a function pass	2017-08-02 20:35:29 +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	…
ignore-annotation-intrinsic-cost.ll	…
loop-remarks-with-hotness.ll	…
loop-remarks.ll	…
not-rotated.ll	[LoopUnroll] Fix a test. REQUIRE should be REQUIRES.	2017-05-12 15:30:58 +00:00
partial-unroll-const-bounds.ll	[PM] Split LoopUnrollPass and make partial unroller a function pass	2017-08-02 20:35:29 +00:00
peel-loop-irreducible.ll	[LoopUnroll] Don't peel loops where the latch isn't the exiting block	2017-03-16 21:07:48 +00:00
peel-loop-negative.ll	[LoopPeeling] Fix condition for phi-eliminating peeling	2017-04-17 05:38:28 +00:00
peel-loop-not-forced.ll	[LoopPeeling] Get rid of Phis that become invariant after N steps	2017-04-17 09:52:02 +00:00
peel-loop-pgo.ll	Use profile summary to disable peeling for huge working sets	2017-08-03 23:42:58 +00:00
peel-loop.ll	[SimplifyCFG] Defer folding unconditional branches to LateSimplifyCFG if it can destroy canonical loop structure.	2017-07-19 08:53:34 +00:00
peel-loop2.ll	[LoopUnroll] Remap references in peeled iteration	2017-03-26 16:46:53 +00:00
pr10813.ll	…
pr11361.ll	…
pr14167.ll	…
pr18861.ll	…
pr27157.ll	…
pr28132.ll	…
pr31718.ll	[LoopUnroll] First form LCSSA, then loop-simplify	2017-01-23 23:45:42 +00:00
rebuild_lcssa.ll	…
revisit.ll	[PM] Split LoopUnrollPass and make partial unroller a function pass	2017-08-02 20:35:29 +00:00
runtime-li.ll	[LoopUnroll] Properly update loopinfo for runtime unrolling by 2	2017-01-26 01:04:11 +00:00
runtime-loop-multiexit-dom-verify.ll	[RuntimeUnrolling] Update DomTree correctly when exit blocks have successors	2017-07-13 13:21:23 +00:00
runtime-loop-multiple-exits.ll	[LoopUnrollRuntime] Avoid multi-exit nested loop with epilog generation	2017-07-11 17:16:33 +00:00
runtime-loop.ll	[PM] Split LoopUnrollPass and make partial unroller a function pass	2017-08-02 20:35:29 +00:00
runtime-loop1.ll	[PM] Split LoopUnrollPass and make partial unroller a function pass	2017-08-02 20:35:29 +00:00
runtime-loop2.ll	[PM] Split LoopUnrollPass and make partial unroller a function pass	2017-08-02 20:35:29 +00:00
runtime-loop3.ll	[PM] Split LoopUnrollPass and make partial unroller a function pass	2017-08-02 20:35:29 +00:00
runtime-loop4.ll	…
runtime-loop5.ll	[PM] Split LoopUnrollPass and make partial unroller a function pass	2017-08-02 20:35:29 +00:00
runtime-unroll-remainder.ll	[LoopUnroll] Enable option to peel remainder loop	2017-08-14 09:25:26 +00:00
scevunroll.ll	…
shifted-tripcount.ll	…
tripcount-overflow.ll	…
unloop.ll	[PM] Split LoopUnrollPass and make partial unroller a function pass	2017-08-02 20:35:29 +00:00
unroll-cleanup.ll	…
unroll-cleanuppad.ll	…
unroll-count.ll	…
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-loop-invalidation.ll	[PM] Relax the spelling of a pass name slightly in this test.	2017-08-08 02:27:49 +00:00
unroll-maxcount.ll	[LoopUnroll] Fix bug in computeUnrollCount causing it to not honor MaxCount	2017-06-28 17:01:15 +00:00
unroll-opt-attribute.ll	…
unroll-pragmas-disabled.ll	…
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] Split LoopUnrollPass and make partial unroller a function pass	2017-08-02 20:35:29 +00:00