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437310b30fd57aa0afdc3188ce256eb5cb445b21
archived-llvm/test/Transforms/LoopUnroll
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Bjorn Pettersson c295640e42 [LoopUnroll] Handle certain PHIs in full unrolling properly 
Summary:
When reconstructing the CFG of the loop after unrolling,
LoopUnroll could in some cases remove the phi operands of
loop-carried values instead of preserving them, resulting
in undef phi values after loop unrolling.

When doing this reconstruction, avoid removing incoming
phi values for phis in the successor blocks if the successor
is the block we are jumping to anyway.

Patch-by: ebevhan

Reviewers: fhahn, efriedma

Reviewed By: fhahn

Subscribers: bjope, lebedev.ri, zzheng, dmgreen, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66334

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@369886 91177308-0d34-0410-b5e6-96231b3b80d8
2019-08-26 09:29:53 +00:00
..
AArch64
[lit] Delete empty lines at the end of lit.local.cfg NFC
2019-06-17 09:51:07 +00:00
AMDGPU
[lit] Delete empty lines at the end of lit.local.cfg NFC
2019-06-17 09:51:07 +00:00
ARM
[MVE] Don't try to unroll vectorised MVE loops
2019-08-11 08:53:18 +00:00
Hexagon
[lit] Delete empty lines at the end of lit.local.cfg NFC
2019-06-17 09:51:07 +00:00
PowerPC
[lit] Delete empty lines at the end of lit.local.cfg NFC
2019-06-17 09:51:07 +00:00
X86
[lit] Delete empty lines at the end of lit.local.cfg NFC
2019-06-17 09:51:07 +00:00
2004-05-13-DontUnrollTooMuch.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
2005-03-06-BadLoopInfoUpdate.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
2006-08-24-MultiBlockLoop.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
2007-04-16-PhiUpdate.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
2007-05-05-UnrollMiscomp.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
2007-05-09-UnknownTripCount.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
2007-11-05-Crash.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
2011-08-08-PhiUpdate.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
2011-08-09-IVSimplify.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
2011-08-09-PhiUpdate.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
2011-10-01-NoopTrunc.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
2012-04-09-unroll-indirectbr.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
basic.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
callbr.ll
[LoopUnroll+LoopUnswitch] do not transform loops containing callbr
2019-07-15 21:16:29 +00:00
complete_unroll_profitability_with_assume.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
convergent.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
debug-info.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
disable_nonforced_count.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
disable_nonforced_enable.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
disable_nonforced_full.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
disable_nonforced.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
disable-loop-unrolling_forced.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
ephemeral.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
epilog_const_phi.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
followup.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
full-unroll-bad-cost.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
full-unroll-crashers.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
full-unroll-heuristics-2.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
full-unroll-heuristics-cmp.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
full-unroll-heuristics-dce.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
full-unroll-heuristics-geps.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
full-unroll-heuristics-phi-prop.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
full-unroll-heuristics.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
full-unroll-keep-first-exit.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
high-cost-trip-count-computation.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
ignore-annotation-intrinsic-cost.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
invalidate_right_loop.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
loop-remarks-with-hotness.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
loop-remarks.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
not-rotated.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
partial-unroll-const-bounds.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
partially-unroll-unconditional-latch.ll
[LoopUnroll] Add support for loops with exiting headers and uncond latches.
2019-06-26 09:16:57 +00:00
peel-loop2.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
peel-loop-conditions-pgo-1.ll
[Loop Peeling] Do not close further unroll/peel if profile based peeling was not used.
2019-08-02 04:29:23 +00:00
peel-loop-conditions-pgo-2.ll
[Loop Peeling] Do not close further unroll/peel if profile based peeling was not used.
2019-08-02 04:29:23 +00:00
peel-loop-conditions.ll
[Loop Peeling] Do not close further unroll/peel if profile based peeling was not used.
2019-08-02 04:29:23 +00:00
peel-loop-inner.ll
[Loop Peeling] Fix silly bug in metadata update.
2019-08-22 10:06:46 +00:00
peel-loop-irreducible.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
peel-loop-negative.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
peel-loop-not-forced.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
peel-loop-pgo-deopt-idom-2.ll
[Loop Peeling] Fix idom detection algorithm.
2019-07-25 19:31:50 +00:00
peel-loop-pgo-deopt-idom.ll
[Loop Peeling] Fix the bug with IDom setting for exit loops
2019-07-15 09:13:11 +00:00
peel-loop-pgo-deopt.ll
[Loop Peeling] Introduce an option for profile based peeling disabling.
2019-08-02 09:32:52 +00:00
peel-loop-pgo.ll
[Loop Peeling] Fix the handling of branch weights of peeled off branches.
2019-07-22 05:15:34 +00:00
peel-loop-scev-invalidate.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
peel-loop.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
pr10813.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
pr11361.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
pr14167.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
pr18861.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
pr27157.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
pr28132.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
pr31718.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
pr33437.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
rebuild_lcssa.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
revisit.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
runtime-epilog-debuginfo.ll
Fix broken debug info in in an !llvm.loop attachment in this testcase.
2019-06-18 20:07:53 +00:00
runtime-li.ll
[LoopUnroll] Add support for loops with exiting headers and uncond latches.
2019-06-26 09:16:57 +00:00
runtime-loop1.ll
[DebugInfo@O2][LoopVectorize] pr39024: Vectorized code linenos step through loop even after completion
2019-06-19 10:50:47 +00:00
runtime-loop2.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
runtime-loop3.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
runtime-loop4.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
runtime-loop5.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
runtime-loop-multiexit-dom-verify.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
runtime-loop-multiple-exits.ll
InstCombine: Preserve nuw when reassociating nuw ops [1/3]
2019-06-24 21:36:59 +00:00
runtime-loop-non-exiting-latch.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
runtime-loop.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
runtime-multiexit-heuristic.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
runtime-unroll-remainder.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
scevunroll.ll
[RLEV] Rewrite loop exit values for multiple exit loops w/o overall loop exit count
2019-08-14 18:27:57 +00:00
shifted-tripcount.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
tripcount-overflow.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
unloop.ll
[LoopUnroll] Add support for loops with exiting headers and uncond latches.
2019-06-26 09:16:57 +00:00
unroll-cleanup.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
unroll-cleanuppad.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
unroll-count.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
unroll-header-exiting-with-phis.ll
[LoopUnroll] Handle certain PHIs in full unrolling properly
2019-08-26 09:29:53 +00:00
unroll-heuristics-pgo.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
unroll-loop-invalidation.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
unroll-maxcount.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
unroll-opt-attribute.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
unroll-pragmas-disabled.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
unroll-pragmas.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00
unroll-unconditional-latch.ll
[LoopUnroll] Add support for loops with exiting headers and uncond latches.
2019-06-26 09:16:57 +00:00
update-loop-info-in-subloops.ll
Revert "Temporarily Revert "Add basic loop fusion pass.""
2019-04-17 04:52:47 +00:00