Max Kazantsev e587199a50 [SCEV] Prove condition invariance via context, try 2 ... Initial implementation had too weak requirements to positive/negative range crossings. Not crossing zero with nuw is not enough for two reasons: - If ArLHS has negative step, it may turn from positive to negative without crossing 0 boundary from left to right (and crossing right to left doesn't count for unsigned); - If ArLHS crosses SINT_MAX boundary, it still turns from positive to negative; In fact we require that ArLHS always stays non-negative or negative, which an be enforced by the following set of preconditions: - both nuw and nsw; - positive step (looks liftable); Because of positive step, boundary crossing is only possible from left part to the right part. And because of no-wrap flags, it is guaranteed to never happen.		2022-08-22 14:31:19 +07:00
..
AArch64	Return "[SCEV] Use context to strengthen flags of BinOps"	2022-08-16 14:12:36 +07:00
AMDGPU	…
ARM	…
NVPTX	…
X86	[Test] Remove addrspace1 ptr to not confuse alive2	2022-08-19 13:25:50 +07:00
2002-09-09-PointerIndVar.ll	…
2003-04-16-ExprAnalysis.ll	…
2003-09-23-NotAtTop.ll	…
2003-12-10-RemoveInstrCrash.ll	…
2003-12-15-Crash.ll	…
2004-03-10-PHIInsertionBug.ll	…
2004-04-05-InvokeCastCrash.ll	…
2004-04-07-ScalarEvolutionCrash.ll	…
2005-02-11-InvokeCrash.ll	…
2005-02-17-TruncateExprCrash.ll	…
2005-02-26-ExitValueCompute.ll	…
2005-06-15-InstMoveCrash.ll	…
2005-11-18-Crash.ll	…
2006-03-31-NegativeStride.ll	…
2006-06-16-Indvar-LCSSA-Crash.ll	…
2006-09-20-LFTR-Crash.ll	…
2006-12-10-BitCast.ll	…
2007-01-06-TripCount.ll	…
2007-06-06-DeleteDanglesPtr.ll	…
2007-11-23-BitcastCrash.ll	…
2008-06-15-SCEVExpanderBug.ll	…
2008-09-02-IVType.ll	…
2008-10-03-CouldNotCompute.ll	…
2008-11-25-APFloatAssert.ll	…
2009-04-22-IndvarCrash.ll	…
2009-04-27-Floating.ll	…
2009-05-24-useafterfree.ll	…
2011-09-10-widen-nsw.ll	…
2011-09-19-vectoriv.ll	…
2011-09-27-hoistsext.ll	…
2011-10-27-lftrnull.ll	…
2011-11-01-lftrptr.ll	…
2011-11-17-selfphi.ll	…
2012-10-19-congruent-constant.ll	…
2014-06-21-congruent-constant.ll	…
2020-12-15-trunc-bug-expensive-range-inference.ll	…
D108043.ll	…
ada-loops.ll	…
addrec_no_exec_on_every_iteration.ll	…
ashr-expansion.ll	…
ashr-tripcount.ll	…
avoid-i0.ll	…
backedge-on-min-max.ll	…
bbi-63564.ll	Return "[SCEV] Use context to strengthen flags of BinOps"	2022-08-16 14:12:36 +07:00
bec-cmp.ll	…
canonicalize-cmp.ll	…
casted-argument.ll	…
checks_against_min_value.ll	…
const_phi.ll	…
constant-fold.ll	…
constant_result.ll	…
crash.ll	…
cycled_phis.ll	[SCEV] Prove condition invariance via context, try 2	2022-08-22 14:31:19 +07:00
dangling-use.ll	…
deterministic-sign.ll	…
divide-pointer.ll	…
dont-recompute.ll	…
drop-exact.ll	…
elim-extend.ll	…
eliminate-backedge.ll	…
eliminate-comparison.ll	Return "[SCEV] Use context to strengthen flags of BinOps"	2022-08-16 14:12:36 +07:00
eliminate-exit-no-dl.ll	…
eliminate-exit.ll	…
eliminate-max.ll	…
eliminate-overflow-modified.ll	…
eliminate-rem.ll	…
eliminate-sat.ll	…
exit-count-select.ll	…
exit_value_test2.ll	…
exit_value_test3.ll	…
exit_value_tests.ll	…
finite-exit-comparisons.ll	Return "[SCEV] Use context to strengthen flags of BinOps"	2022-08-16 14:12:36 +07:00
floating-point-iv.ll	[IndVars] Eliminate redundant type cast with different sizes	2022-08-09 23:59:42 +08:00
floating-point-small-iv.ll	[IndVars] Eliminate redundant type cast with different sizes	2022-08-09 23:59:42 +08:00
full_widening.ll	…
indirectbr.ll	…
infer-poison-flags.ll	…
interesting-invoke-use.ll	…
invalidate-modified-lcssa-phi.ll	…
iterationCount_zext_or_trunc.ll	…
iv-fold.ll	…
iv-sext.ll	…
iv-widen-elim-ext.ll	…
iv-zext.ll	…
lcssa-preservation.ll	…
lftr-address-space-pointers.ll	…
lftr-dead-ivs.ll	…
lftr-multi-exit.ll	…
lftr-opaque-pointers.ll	…
lftr-pr20680.ll	…
lftr-pr31181.ll	…
lftr-pr41998.ll	…
lftr-promote.ll	…
lftr-reuse.ll	…
lftr.ll	…
lftr_disabled.ll	…
loop-predication.ll	Return "[SCEV] Use context to strengthen flags of BinOps"	2022-08-16 14:12:36 +07:00
loop_evaluate7.ll	…
loop_evaluate8.ll	…
loop_evaluate9.ll	…
loop_evaluate11.ll	…
loop_evaluate_1.ll	…
loop_evaluate_2.ll	…
loop_evaluate_3.ll	…
loop_evaluate_4.ll	…
loop_evaluate_5.ll	…
loop_evaluate_6.ll	…
lrev-existing-umin.ll	…
masked-iv.ll	…
monotonic_checks.ll	…
negative_ranges.ll	…
no-iv-rewrite.ll	…
opaque-ptr.ll	…
outer_phi.ll	[SCEV] Prove condition invariance via context, try 2	2022-08-22 14:31:19 +07:00
phi-select.ll	…
phi-uses-value-multiple-times.ll	…
post-inc-range.ll	…
pr18223.ll	…
pr22222.ll	…
pr24783.ll	…
pr24952.ll	…
pr25060.ll	…
pr25578.ll	…
pr26974.ll	…
pr28705.ll	…
pr32045.ll	…
pr38674.ll	…
pr38855.ll	…
pr39673.ll	…
pr40454.ll	…
pr45835.ll	…
pr50506.ll	…
pr54434.ll	…
pr55689.ll	…
pr55925.ll	…
pr56242.ll	…
pr57247.ll	[Test] And one more test for PR57247	2022-08-22 13:02:01 +07:00
predicated_ranges.ll	…
preserve-memoryssa.ll	…
preserve-signed-wrap.ll	…
promote-iv-to-eliminate-casts.ll	…
replace-loop-exit-folds.ll	…
replace-sdiv-by-udiv.ll	…
replace-srem-by-urem.ll	…
rewrite-loop-exit-value.ll	…
rewrite-loop-exit-values-phi.ll	…
rlev-add-me.ll	…
scev-expander-preserve-lcssa.ll	…
scevexpander-phi-base-case.ll	…
sentinel.ll	…
shared-exit-between-nested-loop.ll	…
sharpen-range.ll	…
shift-range-checks.ll	…
shrunk-constant.ll	…
signed-trip-count.ll	…
simplify-pointer-arithmetic.ll	…
single-element-range.ll	…
sink-alloca.ll	…
sink-from-preheader.ll	…
sink-trapping.ll	…
strengthen-overflow.ll	…
tripcount_compute.ll	…
tripcount_infinite.ll	…
trivial-checks.ll	…
trivial-guard.ll	Return "[SCEV] Use context to strengthen flags of BinOps"	2022-08-16 14:12:36 +07:00
udiv-invariant-but-traps.ll	…
udiv.ll	…
ult-sub-to-eq.ll	…
use-range-metadata.ll	…
variable-stride-ivs-0.ll	…
widen-i32-i8ptr.ll	…
zext-nuw.ll	…