Serguei Katkov 66182d6c38 [SimplifyCFG] Re-apply Relax restriction for folding unconditional branches ... The commit rL308422 introduces a restriction for folding unconditional branches. Specifically if empty block with unconditional branch leads to header of the loop then elimination of this basic block is prohibited. However it seems this condition is redundantly strict. If elimination of this basic block does not introduce more back edges then we can eliminate this block. The patch implements this relax of restriction. The test profile/Linux/counter_promo_nest.c in compiler-rt project is updated to meet this change. Reviewers: efriedma, mcrosier, pacxx, hsung, davidxl Reviewed By: pacxx Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D42691 llvm-svn: 324572		2018-02-08 07:16:29 +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] Switch to the new addr space mapping by default	2018-02-02 16:07:16 +00:00
ARM	[ARM] Allow unrolling of multi-block loops.	2017-10-23 08:05:14 +00:00
PowerPC	The cost of splitting a large vector instruction is not being taken into account by the getUserCost function. This was leading to some loops being over unrolled. The cost of a vector instruction is now being multiplied by the cost of the type legalization. This will return a more accurate cost.	2017-10-19 18:16:31 +00:00
X86	Changed basic cost of store operation on X86	2017-08-20 12:34:29 +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	…
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	…
debug-info.ll	loop-unroll: teach remapInstruction to update dbg.value intrinsics.	2017-11-01 23:12:35 +00:00
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	[LoopUnroll] Clean up remarks for unroll remainder	2017-10-31 10:47:46 +00:00
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] Re-apply Relax restriction for folding unconditional branches	2018-02-08 07:16:29 +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	…
pr33437.ll	[LoopUnroll] Make the test for PR33437 actually useful.	2017-08-29 17:24:09 +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-epilog-debuginfo.ll	[Unroll][DebugInfo] Propagate loop body's debug location to epilog preheader	2017-12-26 23:31:21 +00:00
runtime-li.ll	…
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	[RuntimeUnrolling] Populate the VMap entry correctly when default generated through lookup	2017-09-15 13:29:33 +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	[Unroll][DebugInfo] Propagate loop body's debug location to epilog preheader	2017-12-26 23:31:21 +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-multiexit-heuristic.ll	[RuntimeUnroll] Add heuristic for unrolling multi-exit loop	2017-09-15 15:56:05 +00:00
runtime-unroll-remainder.ll	[ValueTracking] Enabling ValueTracking patch by default	2017-10-20 10:08:47 +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	Use a BumpPtrAllocator for Loop objects	2017-09-28 02:45:42 +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