Anna Thomas e5e5e59d8b [RuntimeUnrolling] Add logic for loops with multiple exit blocks ... Summary: Runtime unrolling is done for loops with a single exit block and a single exiting block (and this exiting block should be the latch block). This patch adds logic to support unrolling in the presence of multiple exit blocks (which also means multiple exiting blocks). Currently this is under an off-by-default option and is supported when epilog code is generated. Support in presence of prolog code will be in a future patch (we just need to add more tests, and update comments). This patch is essentially an implementation patch. I have not added any heuristic (in terms of branches added or code size) to decide when this should be enabled. Reviewers: mkuper, sanjoy, reames, evstupac Reviewed by: reames Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D33001 llvm-svn: 306846		2017-06-30 17:57:07 +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
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] Teach LoopUnroll to update the LPM infrastructure as it unrolls	2017-01-25 02:49:01 +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] 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	…
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] Simplify the new PM interface to the loop unroller and expose two	2017-01-26 02:13:50 +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	[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
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	[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-loop-multiple-exits.ll	[RuntimeUnrolling] Add logic for loops with multiple exit blocks	2017-06-30 17:57:07 +00:00
runtime-loop.ll	[PM] Teach LoopUnroll to update the LPM infrastructure as it unrolls	2017-01-25 02:49:01 +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	…
runtime-loop5.ll	The patch turns on epilogue unroll for loops with constant recurency start.	2017-03-02 17:38:46 +00:00
scevunroll.ll	…
shifted-tripcount.ll	…
tripcount-overflow.ll	…
unloop.ll	[PM] Teach LoopUnroll to update the LPM infrastructure as it unrolls	2017-01-25 02:49:01 +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-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] Teach LoopUnroll to update the LPM infrastructure as it unrolls	2017-01-25 02:49:01 +00:00