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Max Kazantsev 0d95b20b63 [LICM] Reassociate & hoist add expressions 
This patch allows LICM to reassociate and hoist following expressions:
```
loop:
  %sum = add nsw %iv, %C1
  %cmp = icmp <signed pred> %sum, C2
```
where `C1` and `C2` are loop invariants. The reassociated version looks like
```
preheader:
  %inv_sum = C2 - C1
...
loop:
  %cmp = icmp <signed pred> %iv, %inv_sum
```
In order to prove legality, we need both initial addition and the newly created subtraction
to happen without overflow.

Differential Revision: https://reviews.llvm.org/D149132
Reviewed By: skatkov
2023-05-22 13:22:22 +07:00
..
AArch64
[NFC][Py Reformat] Reformat lit.local.cfg python files in llvm
2023-05-17 17:03:15 +02:00
AMDGPU
[NFC][Py Reformat] Reformat lit.local.cfg python files in llvm
2023-05-17 17:03:15 +02:00
Inputs
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2003-02-26-LoopExitNotDominated.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2003-02-27-NestedLoopExitBlocks.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2003-02-27-PreheaderExitNodeUpdate.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2003-02-27-PreheaderProblem.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2003-02-27-StoreSinkPHIs.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2003-02-28-PromoteDifferentType.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2003-05-02-LoadHoist.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2003-12-11-SinkingToPHI.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2004-09-14-AliasAnalysisInvalidate.ll
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2004-11-17-UndefIndexCrash.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2006-09-12-DeadUserOfSunkInstr.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2007-05-22-VolatileSink.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2007-07-30-AliasSet.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2007-09-17-PromoteValue.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2007-09-24-PromoteNullValue.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2007-10-01-PromoteSafeValue.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2008-05-20-AliasSetVAArg.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2008-07-22-LoadGlobalConstant.ll
[LICM] Regenerate test checks (NFC)
2023-01-31 11:48:35 +01:00
2009-12-10-LICM-Indbr-Crash.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2011-04-06-HoistMissedASTUpdate.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2011-04-06-PromoteResultOfPromotion.ll
[LICM] Regenerate test checks (NFC)
2023-03-17 17:17:13 +01:00
2011-04-09-RAUW-AST.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2011-07-06-Alignment.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
2014-09-10-doFinalizationAssert.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
alias-set-tracker-loss.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
AliasSetMemSet.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
allow-speculation-option.ll
[PassBuilder] Detect loop-mssa for licm with parameters (PR60149)
2023-01-23 12:11:33 +01:00
argmemonly-call.ll
…
assume.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
atomics.ll
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basictest.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
bisect-state.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
call-hoisting.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
callbr-crash.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
constexpr.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
convergent.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
crash.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
debug-value.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
dropped-tbaa.ll
[NFC] Port all LICM tests to -passes= syntax
2022-12-08 02:38:45 +03:00
explicit_guards.ll
[TEST][LICM] Add test cases on widenable condition hoisting opportunity
2023-04-28 17:53:39 +07:00
extra-copies.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
fence.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
freeze.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
funclet.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
gc-relocate.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
gep-reassociate.ll
[LICM] Fix assert failure in no-allowspeculation mode
2023-04-11 11:55:54 +02:00
guards.ll
[LICM] Allow load-only scalar promotion in the presence of aliasing loads
2022-12-20 10:02:46 +01:00
hoist-add-sub.ll
[LICM] Reassociate & hoist add expressions
2023-05-22 13:22:22 +07:00
hoist-alloc.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
hoist-bitcast-load.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
hoist-debuginvariant.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
hoist-deref-load.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
hoist-fast-fdiv.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
hoist-invariant-load.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
hoist-load-without-store.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
hoist-metadata.ll
Reapply [SimplifyCFG][LICM] Preserve nonnull, range and align metadata when speculating
2023-04-20 14:17:15 +02:00
hoist-mustexec.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
hoist-nounwind.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
hoist-phi.ll
Revert "Reland "[SimplifyCFG] FoldBranchToCommonDest(): deal with mismatched IV's in PHI's in common successor block""
2022-12-20 18:36:42 +03:00
hoist-round.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
hoisting-preheader-debugloc.ll
…
hoisting.ll
[LICM] Don't try to constant fold instructions
2023-04-26 09:26:47 +02:00
infinite_loops.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
int_sideeffect.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
invariant.group.ll
[LICM] Ensure LICM can hoist invariant.group
2023-02-26 12:41:41 -05:00
invariant.start.ll
[LICM] Allow load-only scalar promotion in the presence of aliasing loads
2022-12-20 10:02:46 +01:00
lcssa-ssa-promoter.ll
[LICM] Regenerate test checks (NFC)
2023-01-31 11:48:35 +01:00
lnicm-sink.ll
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lnicm.ll
…
loop-sink-phi-in-preheader.ll
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loopsink-pr38462.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
loopsink-pr39570.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
loopsink-pr39695.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
loopsink.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
min_max.ll
Return "[LICM] Support logical AND/OR when hoisting min/max"
2023-03-13 14:34:43 +07:00
no-preheader-test.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
opt-remarks-conditional-load.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
opt-remarks-intervening-store.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
opt-remarks.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
outer-loop-deleted-before-licm.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
pr23608.ll
[LICM] Don't duplicate instructions just because they're free
2023-04-28 14:31:23 +02:00
pr26843.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
pr27262.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
pr32129.ll
[LICM] Don't try to constant fold instructions
2023-04-26 09:26:47 +02:00
pr35342.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
pr36228.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
pr37323.ll
…
pr38513.ll
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pr40317.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
pr42969.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
pr50367.ll
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pr51333.ll
…
pr54495.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
pr55672.ll
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pr57780.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
pr59324.ll
[LICM] Remove custom isInstInList() implementation (PR59324)
2022-12-07 09:51:35 +01:00
PR19798.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
PR21582.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
PR24013.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
pragma-licm-disable.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
preheader-safe.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
Preserve-LCSSA.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
promote-atomic.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
promote-capture.ll
…
promote-order.ll
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promote-single-thread.ll
[LICM] Don't promote store to global even in single-thread mode
2023-04-03 14:20:06 +02:00
promote-tls.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
promote-unknown-load.ll
[LICM] Allow load-only scalar promotion in the presence of aliasing loads
2022-12-20 10:02:46 +01:00
read-only-calls.ll
…
read-volatile-register.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
scalar-promote-memmodel.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
scalar-promote-unwind.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
scalar-promote.ll
[LICM] Don't try to constant fold instructions
2023-04-26 09:26:47 +02:00
sink-debuginfo-preserve.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
sink-foldable.ll
[LICM] Don't duplicate instructions just because they're free
2023-04-28 14:31:23 +02:00
sink-promote.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
sink-with-coroutine.ll
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sinking-debugify.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
sinking.ll
[LICM] Don't duplicate instructions just because they're free
2023-04-28 14:31:23 +02:00
speculate-div.ll
Re-revert "[ValueTracking] Use knownbits interface for determining if div/rem are safe to speculate"
2023-05-09 19:11:21 -05:00
speculate.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
store-hoisting.ll
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strlen.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
unrolled-deeply-nested.ll
[NFC] Port all (but one) LICM tests to -passes= syntax
2022-12-07 20:53:15 +03:00
update-scev.ll
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volatile-alias.ll
…