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Philip Reames d5a3ed4880 [IndVars, RLEV] Support rewriting exit values in loops without known exits (prep work) 
This is a prepatory patch for future work on support exit value rewriting in loops with a mixture of computable and non-computable exit counts.  The intention is to be "mostly NFC" - i.e. not enable any interesting new transforms - but in practice, there are some small output changes.

The test differences are caused by cases wherewhere getSCEVAtScope can simplify a single entry phi without needing any knowledge of the loop.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@367485 91177308-0d34-0410-b5e6-96231b3b80d8
2019-07-31 21:15:21 +00:00
..
AMDGPU
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2019-04-17 04:52:47 +00:00
NVPTX
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2019-04-17 04:52:47 +00:00
2002-09-09-PointerIndVar.ll
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2019-04-17 04:52:47 +00:00
2003-04-16-ExprAnalysis.ll
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2019-04-17 04:52:47 +00:00
2003-09-23-NotAtTop.ll
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2019-04-17 04:52:47 +00:00
2003-12-10-RemoveInstrCrash.ll
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2019-04-17 04:52:47 +00:00
2003-12-15-Crash.ll
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2019-04-17 04:52:47 +00:00
2004-03-10-PHIInsertionBug.ll
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2019-04-17 04:52:47 +00:00
2004-04-05-InvokeCastCrash.ll
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2019-04-17 04:52:47 +00:00
2004-04-07-ScalarEvolutionCrash.ll
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2019-04-17 04:52:47 +00:00
2005-02-11-InvokeCrash.ll
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2019-04-17 04:52:47 +00:00
2005-02-17-TruncateExprCrash.ll
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2019-04-17 04:52:47 +00:00
2005-02-26-ExitValueCompute.ll
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2019-04-17 04:52:47 +00:00
2005-06-15-InstMoveCrash.ll
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2005-11-18-Crash.ll
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2019-04-17 04:52:47 +00:00
2006-03-31-NegativeStride.ll
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2019-04-17 04:52:47 +00:00
2006-06-16-Indvar-LCSSA-Crash.ll
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2019-04-17 04:52:47 +00:00
2006-09-20-LFTR-Crash.ll
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2019-04-17 04:52:47 +00:00
2006-12-10-BitCast.ll
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2019-04-17 04:52:47 +00:00
2007-01-06-TripCount.ll
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2019-04-17 04:52:47 +00:00
2007-06-06-DeleteDanglesPtr.ll
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2019-04-17 04:52:47 +00:00
2007-11-23-BitcastCrash.ll
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2019-04-17 04:52:47 +00:00
2008-06-15-SCEVExpanderBug.ll
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2019-04-17 04:52:47 +00:00
2008-09-02-IVType.ll
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2019-04-17 04:52:47 +00:00
2008-10-03-CouldNotCompute.ll
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2019-04-17 04:52:47 +00:00
2008-11-25-APFloatAssert.ll
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2019-04-17 04:52:47 +00:00
2009-04-14-shorten_iv_vars.ll
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2019-04-17 04:52:47 +00:00
2009-04-15-shorten-iv-vars-2.ll
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2019-04-17 04:52:47 +00:00
2009-04-22-IndvarCrash.ll
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2019-04-17 04:52:47 +00:00
2009-04-27-Floating.ll
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2019-04-17 04:52:47 +00:00
2009-05-24-useafterfree.ll
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2019-04-17 04:52:47 +00:00
2011-09-10-widen-nsw.ll
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2019-04-17 04:52:47 +00:00
2011-09-19-vectoriv.ll
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2019-04-17 04:52:47 +00:00
2011-09-27-hoistsext.ll
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2019-04-17 04:52:47 +00:00
2011-10-27-lftrnull.ll
Fix a bug w/inbounds invalidation in LFTR (recommit)
2019-06-17 20:32:22 +00:00
2011-11-01-lftrptr.ll
[LFTR] Use SCEVExpander for the pointer limit case instead of manual IR gen
2019-07-03 20:03:46 +00:00
2011-11-15-multiexit.ll
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2019-04-17 04:52:47 +00:00
2011-11-17-selfphi.ll
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2019-04-17 04:52:47 +00:00
2012-10-19-congruent-constant.ll
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2019-04-17 04:52:47 +00:00
2014-06-21-congruent-constant.ll
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2019-04-17 04:52:47 +00:00
ada-loops.ll
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2019-04-17 04:52:47 +00:00
ashr-tripcount.ll
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avoid-i0.ll
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backedge-on-min-max.ll
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bec-cmp.ll
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canonicalize-cmp.ll
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casted-argument.ll
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2019-04-17 04:52:47 +00:00
const_phi.ll
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constant_result.ll
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constant-fold.ll
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2019-04-17 04:52:47 +00:00
crash.ll
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2019-04-17 04:52:47 +00:00
dangling-use.ll
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2019-04-17 04:52:47 +00:00
divide-pointer.ll
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2019-04-17 04:52:47 +00:00
dont-recompute.ll
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2019-04-17 04:52:47 +00:00
drop-exact.ll
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2019-04-17 04:52:47 +00:00
elim-extend.ll
[LFTR] Hoist extend expressions outside of loops w/o waiting for LICM
2019-07-03 18:18:36 +00:00
eliminate-comparison.ll
[IndVars] Remove dead instructions after folding trivial loop exit
2019-06-23 17:06:57 +00:00
eliminate-exit-no-dl.ll
[IndVars] Fix a subtle bug in optimizeLoopExits
2019-07-23 17:45:11 +00:00
eliminate-exit.ll
[IndVars] Use exit count reasoning to discharge obviously untaken exits
2019-07-12 17:05:35 +00:00
eliminate-max.ll
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2019-04-17 04:52:47 +00:00
eliminate-rem.ll
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2019-04-17 04:52:47 +00:00
eliminate-sat.ll
[SimplifyIndVar] Simplify non-overflowing saturating add/sub
2019-06-15 08:48:52 +00:00
eliminate-trunc.ll
[IndVars] Remove dead instructions after folding trivial loop exit
2019-06-23 17:06:57 +00:00
exit_value_test2.ll
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2019-04-17 04:52:47 +00:00
exit_value_test3.ll
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2019-04-17 04:52:47 +00:00
exit_value_tests.ll
Teach getSCEVAtScope how to handle loop phis w/invariant operands in loops w/taken backedges
2019-06-17 21:06:17 +00:00
floating-point-iv.ll
[Tests] Autogen and improve test readability
2019-06-23 17:13:53 +00:00
full_widening.ll
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2019-04-17 04:52:47 +00:00
huge_muls.ll
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2019-04-17 04:52:47 +00:00
indirectbr.ll
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2019-04-17 04:52:47 +00:00
infer-poison-flags.ll
[Tests] Add poison inference tests for indvars showing both existing transforms, and some room for improvement
2019-06-05 18:00:59 +00:00
inner-loop-by-latch-cond.ll
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2019-04-17 04:52:47 +00:00
inner-loop.ll
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2019-04-17 04:52:47 +00:00
interesting-invoke-use.ll
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2019-04-17 04:52:47 +00:00
iterationCount_zext_or_trunc.ll
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2019-04-17 04:52:47 +00:00
iv-fold.ll
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2019-04-17 04:52:47 +00:00
iv-sext.ll
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2019-04-17 04:52:47 +00:00
iv-widen-elim-ext.ll
[LFTR] Hoist extend expressions outside of loops w/o waiting for LICM
2019-07-03 18:18:36 +00:00
iv-widen.ll
[LFTR] Hoist extend expressions outside of loops w/o waiting for LICM
2019-07-03 18:18:36 +00:00
iv-zext.ll
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2019-04-17 04:52:47 +00:00
lcssa-preservation.ll
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2019-04-17 04:52:47 +00:00
lftr_disabled.ll
[IndVarSimplify] Generate full checks for some LFTR tests; NFC
2019-04-20 12:05:53 +00:00
lftr-address-space-pointers.ll
[LFTR] Use SCEVExpander for the pointer limit case instead of manual IR gen
2019-07-03 20:03:46 +00:00
lftr-dead-ivs.ll
[LFTR] Use SCEVExpander for the pointer limit case instead of manual IR gen
2019-07-03 20:03:46 +00:00
lftr-multi-exit.ll
[Tests] Add a tricky LFTR case for documentation purposes
2019-06-20 17:16:53 +00:00
lftr-pr20680.ll
[IndVars, RLEV] Support rewriting exit values in loops without known exits (prep work)
2019-07-31 21:15:21 +00:00
lftr-pr31181.ll
[IndVarSimplify] Fixup nowrap flags during LFTR (PR31181)
2019-06-01 09:40:18 +00:00
lftr-pr41998.ll
[LFTR] Use SCEVExpander for the pointer limit case instead of manual IR gen
2019-07-03 20:03:46 +00:00
lftr-promote.ll
[IndVarSimplify] Generate full checks for some LFTR tests; NFC
2019-04-20 12:05:53 +00:00
lftr-reuse.ll
[LFTR] Use SCEVExpander for the pointer limit case instead of manual IR gen
2019-07-03 20:03:46 +00:00
lftr.ll
[LFTR] Hoist extend expressions outside of loops w/o waiting for LICM
2019-07-03 18:18:36 +00:00
loop_evaluate7.ll
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2019-04-17 04:52:47 +00:00
loop_evaluate8.ll
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2019-04-17 04:52:47 +00:00
loop_evaluate9.ll
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2019-04-17 04:52:47 +00:00
loop_evaluate10.ll
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loop_evaluate11.ll
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2019-04-17 04:52:47 +00:00
loop_evaluate_1.ll
[IndVarSimplify][NFC] Autogenerate check lines in loop_evaluate_1.ll
2019-07-22 22:08:27 +00:00
loop_evaluate_2.ll
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loop_evaluate_3.ll
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loop_evaluate_4.ll
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loop_evaluate_5.ll
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2019-04-17 04:52:47 +00:00
loop_evaluate_6.ll
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2019-04-17 04:52:47 +00:00
loop-invariant-conditions.ll
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2019-04-17 04:52:47 +00:00
lrev-existing-umin.ll
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2019-04-17 04:52:47 +00:00
masked-iv.ll
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2019-04-17 04:52:47 +00:00
no-iv-rewrite.ll
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2019-04-17 04:52:47 +00:00
overflow-intrinsics.ll
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2019-04-17 04:52:47 +00:00
phi-uses-value-multiple-times.ll
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2019-04-17 04:52:47 +00:00
polynomial-expand.ll
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2019-04-17 04:52:47 +00:00
post-inc-range.ll
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2019-04-17 04:52:47 +00:00
pr18223.ll
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2019-04-17 04:52:47 +00:00
pr22222.ll
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2019-04-17 04:52:47 +00:00
pr24356.ll
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2019-04-17 04:52:47 +00:00
pr24783.ll
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pr24804.ll
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pr24952.ll
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2019-04-17 04:52:47 +00:00
pr24956.ll
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2019-04-17 04:52:47 +00:00
pr25047.ll
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2019-04-17 04:52:47 +00:00
pr25051.ll
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2019-04-17 04:52:47 +00:00
pr25060.ll
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2019-04-17 04:52:47 +00:00
pr25360.ll
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2019-04-17 04:52:47 +00:00
pr25421.ll
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2019-04-17 04:52:47 +00:00
pr25576.ll
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2019-04-17 04:52:47 +00:00
pr25578.ll
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2019-04-17 04:52:47 +00:00
pr26973.ll
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2019-04-17 04:52:47 +00:00
pr26974.ll
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2019-04-17 04:52:47 +00:00
pr27133.ll
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2019-04-17 04:52:47 +00:00
pr28935.ll
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2019-04-17 04:52:47 +00:00
pr32045.ll
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2019-04-17 04:52:47 +00:00
pr35406.ll
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2019-04-17 04:52:47 +00:00
pr38674.ll
[IndVars, RLEV] Support rewriting exit values in loops without known exits (prep work)
2019-07-31 21:15:21 +00:00
pr38855.ll
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2019-04-17 04:52:47 +00:00
pr39673.ll
Teach getSCEVAtScope how to handle loop phis w/invariant operands in loops w/taken backedges
2019-06-17 21:06:17 +00:00
pr40454.ll
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2019-04-17 04:52:47 +00:00
preserve-signed-wrap.ll
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2019-04-17 04:52:47 +00:00
promote-iv-to-eliminate-casts.ll
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2019-04-17 04:52:47 +00:00
replace-iv-with-loop-invariant.ll
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2019-04-17 04:52:47 +00:00
replace-loop-exit-folds.ll
[SCEV] Add explicit representations of umin/smin
2019-05-07 15:28:47 +00:00
replace-sdiv-by-udiv.ll
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2019-04-17 04:52:47 +00:00
replace-srem-by-urem.ll
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2019-04-17 04:52:47 +00:00
rewrite-loop-exit-value.ll
[IndVars] Extend reasoning about loop invariant exits to non-header blocks
2019-05-14 17:20:10 +00:00
scev-phi-debug-info.ll
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2019-04-17 04:52:47 +00:00
scevexpander-phi-base-case.ll
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2019-04-17 04:52:47 +00:00
sharpen-range.ll
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2019-04-17 04:52:47 +00:00
shrunk-constant.ll
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2019-04-17 04:52:47 +00:00
signed-trip-count.ll
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2019-04-17 04:52:47 +00:00
single-element-range.ll
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2019-04-17 04:52:47 +00:00
sink-alloca.ll
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2019-04-17 04:52:47 +00:00
sink-from-preheader.ll
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2019-04-17 04:52:47 +00:00
sink-trapping.ll
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2019-04-17 04:52:47 +00:00
strengthen-overflow.ll
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2019-04-17 04:52:47 +00:00
tripcount_compute.ll
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2019-04-17 04:52:47 +00:00
tripcount_infinite.ll
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2019-04-17 04:52:47 +00:00
udiv-invariant-but-traps.ll
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2019-04-17 04:52:47 +00:00
udiv.ll
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2019-04-17 04:52:47 +00:00
uglygep.ll
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2019-04-17 04:52:47 +00:00
ult-sub-to-eq.ll
[LFTR] Hoist extend expressions outside of loops w/o waiting for LICM
2019-07-03 18:18:36 +00:00
use-range-metadata.ll
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2019-04-17 04:52:47 +00:00
variable-stride-ivs-0.ll
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2019-04-17 04:52:47 +00:00
variable-stride-ivs-1.ll
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2019-04-17 04:52:47 +00:00
verify-scev.ll
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2019-04-17 04:52:47 +00:00
widen-loop-comp.ll
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2019-04-17 04:52:47 +00:00
widen-nsw.ll
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2019-04-17 04:52:47 +00:00
zext-nuw.ll
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2019-04-17 04:52:47 +00:00