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llvm-project/llvm/test/Transforms/GVN
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Yash Solanki 73a351e7d4
[llvm][GVN] Propagate trunc nuw to i1 equalities (#143273) 
This patch adds to GVN's `propagateEquality()` to reason about equality
constraints through `trunc nuw iN to i1`.

Given:
  %tr = trunc nuw iN %v to i1

We can deduce that if `%tr == true`, then `%v == 1`, and if `%tr ==
false`, then `%v == 0`. This is valid because `nuw` guarantees that
truncation didn't lose unsigned bits, so `%v` must have been either 0 or
1.

The patch adds logic to propagate this information via the GVN worklist.
This enables further simplification opportunities downstream, such as
folding redundant stores or conditionals that depend on `%v`.

Includes a test case in `GVN/trunc-nuw-equality.ll`.

Resolves #142744
2025-06-08 18:58:16 +02:00
..
PRE
[GVN/PRE] Remove triple from GVN/PRE tests (#129073)
2025-02-28 11:43:45 +05:30
2007-07-25-DominatedLoop.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2007-07-25-InfiniteLoop.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2007-07-25-Loop.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2007-07-25-NestedLoop.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2007-07-25-SinglePredecessor.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2007-07-26-InterlockingLoops.ll
[GVN] Convert tests to opaque pointers (NFC)
2023-01-11 14:19:34 +01:00
2007-07-26-NonRedundant.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2007-07-26-PhiErasure.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2007-07-30-PredIDom.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2007-07-31-NoDomInherit.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2007-07-31-RedundantPhi.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2008-02-12-UndefLoad.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2008-02-13-NewPHI.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2008-07-02-Unreachable.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2008-12-09-SelfRemove.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2008-12-12-RLE-Crash.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2008-12-14-rle-reanalyze.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2008-12-15-CacheVisited.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2009-01-21-SortInvalidation.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2009-01-22-SortInvalidation.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2009-03-10-PREOnVoid.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2009-07-13-MemDepSortFail.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2009-11-12-MemDepMallocBitCast.ll
[IR] Remove mul constant expression (#127046)
2025-02-14 09:28:57 +01:00
2010-03-31-RedundantPHIs.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2010-05-08-OneBit.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2010-11-13-Simplify.ll
…
2011-04-27-phioperands.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#115817)
2024-11-12 09:11:47 +00:00
2011-07-07-MatchIntrinsicExtract.ll
…
2011-09-07-TypeIdFor.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2012-05-22-PreCrash.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#115817)
2024-11-12 09:11:47 +00:00
2016-08-30-MaskedScatterGather-inseltpoison.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
2016-08-30-MaskedScatterGather.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
addrspacecast.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
assume-equal.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
assume.ll
[GVN] Add MemorySSA checks in tests 1/N (#130261)
2025-03-21 12:00:22 +05:30
basic-undef-test.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
basic.ll
[GVN] Add MemorySSA checks in tests 1/N (#130261)
2025-03-21 12:00:22 +05:30
big-endian.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
bitcast-of-call.ll
[GVN] Convert tests to opaque pointers (NFC)
2023-01-11 14:19:34 +01:00
br-identical.ll
…
callbr-loadpre-critedge.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
callbr-scalarpre-critedge.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
calloc-load-removal.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
calls-nonlocal.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
calls-readonly.ll
[PGO]Implement metadata combine for 'branch_weights' of direct
2023-04-27 13:04:17 -07:00
capture-tracking-limit.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
captured-before.ll
[CaptureTracking] Treat vector GEPs as captures
2023-12-05 10:09:52 +01:00
captures.ll
[GVN] Add test with different captures attributes (NFC)
2025-06-06 11:24:24 +02:00
commute.ll
…
cond_br2.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
cond_br.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
condprop-memdep-invalidation.ll
[Transforms] Convert tests to opaque pointers (NFC)
2024-02-05 11:57:34 +01:00
condprop.ll
[GVN] Look through select/phi when determining underlying object (#99509)
2024-07-22 16:22:01 +02:00
constexpr-vector-constainsundef-crash-inseltpoison.ll
[AMDGPU][InstCombine][InstSimplify] Pre-commit tests for PR130742 (#135305)
2025-04-11 12:42:14 +08:00
constexpr-vector-constainsundef-crash.ll
[AMDGPU][InstCombine][InstSimplify] Pre-commit tests for PR130742 (#135305)
2025-04-11 12:42:14 +08:00
convergent.ll
[GVN] Do not combine convergent calls in GVN/NewGVN
2023-05-19 21:27:35 +01:00
crash-no-aa.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
crash.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#115817)
2024-11-12 09:11:47 +00:00
critical-edge-split-failure.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
critical-edge-split-indbr-pred-in-loop.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
dbg-redundant-load.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
debugloc-load-select.ll
[DebugInfo][GVN] Propagate DebugLoc from load-of-select to select (#114233)
2024-11-15 17:07:33 +00:00
debugloc.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
duplicate-phis.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
edge.ll
IR: introduce CmpInst::isEquivalence (#111979)
2024-11-04 15:54:59 +00:00
equality-assume.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#115817)
2024-11-12 09:11:47 +00:00
fake-use-constprop.ll
[Clang] Cleanup docs and comments relating to -fextend-variable-liveness (#124767)
2025-01-28 18:25:32 +00:00
fence.ll
[test] Regenerate some tests
2023-06-27 16:53:50 -07:00
flags.ll
…
fold-const-expr.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
fpmath.ll
…
freeze.ll
[GVN] Fix typo in freeze test case
2023-06-09 15:41:32 +01:00
funclet.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
gc_relocate.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
gvn-loop-load-pre-order.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
int_sideeffect.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
intersect-empty-attr.ll
[GVN] Handle empty attrs in Expression == (#115761)
2024-11-12 09:08:06 -06:00
intrinsics_in_cg.ll
[CallGraph][FIX] Ensure generic intrinsics are represented in the CG
2023-01-10 11:38:58 -08:00
invariant.group.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
invariant.start.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
lifetime-simple.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
load-constant-mem.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
load-dead-block.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
load-from-unreachable-predecessor.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
load-of-pointer-select-available.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
load-through-select-dbg.ll
[RemoveDIs] Print IR with debug records by default (#91724)
2024-06-14 15:07:27 +01:00
loadpre-context.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
loadpre-missed-opportunity.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
malloc-load-removal.ll
[GVN][NFC] Remove triple from some tests (#129724)
2025-03-05 09:12:29 +05:30
masked-load-store-vn-crash.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
masked-load-store.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
memdep-unknown-deadblocks.ll
…
MemdepMiscompile.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
memset-pattern.ll
[DSE/GVN] Continue to improve memset.pattern testing [nfc]
2025-05-05 09:25:23 -07:00
merge-range.ll
[Metadata] Try to merge the first and last ranges. (#101860)
2024-08-04 16:45:10 +08:00
metadata.ll
[GVN] Improve PRE on load instructions
2023-06-06 19:45:34 +00:00
mssa-update-dead-def.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
no_speculative_loads_with_asan.ll
[llvm][test] restrict 2 GVN tests to just test GVN (NFC)
2023-02-14 13:30:23 -08:00
no-mem-dep-info.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
noalias.ll
[Local] Only intersect alias.scope,noalias & parallel_loop if inst moves (#117716)
2024-11-26 20:39:53 +00:00
non-integral-pointers-inseltpoison.ll
[LLVM][IR] Use splat syntax when printing Constant[Data]Vector. (#112548)
2024-11-06 11:53:33 +00:00
non-integral-pointers.ll
[GVN][NFC] Remove triple from some tests (#129724)
2025-03-05 09:12:29 +05:30
non-local-offset.ll
[GVN] Convert tests to opaque pointers (NFC)
2023-01-11 14:19:34 +01:00
nonescaping-malloc.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
nonescaping.ll
[GVN] Add MemorySSA checks in tests 1/N (#130261)
2025-03-21 12:00:22 +05:30
nontemporal.ll
[Local][SimplifyCFG][GVN] Handle !nontemporal in combineMetadata
2023-02-22 14:47:00 +01:00
noundef.ll
[Local][InstCombine][GVN] Handle !noundef metadata in combineMetadata
2023-02-02 14:25:13 +08:00
null-aliases-nothing.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
opaque-ptr.ll
[LLVM][IR] When evaluating GEP offsets don't assume ConstantInt is a scalar. (#117162)
2024-12-04 12:45:30 +00:00
opt-remarks-multiple-users.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
opt-remarks-non-dominating.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
opt-remarks.ll
[GVN][NFC] Remove unnecessary assembly output from test (#129670)
2025-03-04 14:29:49 +05:30
phi-translate-partial-alias.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
phi-translation-to-wrong-context.ll
…
phi.ll
[GVN][NFC] Add MSSA checks in tests 2/N (#137814)
2025-05-15 10:29:41 +05:30
pr10820.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr12979.ll
…
pr14166.ll
[GVN] Add MemorySSA checks in tests 1/N (#130261)
2025-03-21 12:00:22 +05:30
pr17732.ll
[Transforms] Convert tests to opaque pointers (NFC)
2024-02-05 11:57:34 +01:00
pr17852.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr24397.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr24426.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr25440.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr28562.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr28879.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr32314.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr33549.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr34908.ll
…
pr36063.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr42605.ll
[GVN] Convert tests to opaque pointers (NFC)
2023-01-11 14:19:34 +01:00
pr46054-md-nonlocaldefcache-cleanup.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr48805.ll
SSAUpdater: use poison instead of undef in phi entries for unreachable predecessors
2024-06-30 11:51:30 +01:00
pr49193.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
pr63019.ll
[AA] Fix comparison of AliasResults (PR63019)
2023-05-31 15:03:41 +02:00
pr63059.ll
[GVN] Add tests for PR63059 (NFC)
2023-06-30 15:52:40 +01:00
pr64598.ll
[GVN] Invalidate MDA when deduplicating phi nodes
2023-09-15 07:04:32 +02:00
pr65447.ll
PHITransAddr: Avoid looking at constant use lists (#134689)
2025-04-13 16:58:57 +02:00
pr69301.ll
[GVN] Fix use-after-free in load PRE with select available value (#69314)
2023-10-19 09:08:59 +02:00
pr82884.ll
[GVN] Drop nsw/nuw flags when replacing the result of a with.overflow intrinsic with a overflowing binary operator (#82935)
2024-02-26 15:55:56 +08:00
pr113997.ll
[GVN][NewGVN] Take call attributes into account in expressions (#114545)
2024-11-08 16:00:48 +08:00
pre-compare.ll
[GVN][NFC] Add MSSA checks in tests 2/N (#137814)
2025-05-15 10:29:41 +05:30
pre-invalid-prof-metadata.ll
Reapply [Metadata] Preserve MD_prof when merging instructions when one is missing. (#135418)
2025-04-17 08:22:19 -07:00
pre-new-inst.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#115817)
2024-11-12 09:11:47 +00:00
pre-skip-convergent.ll
[GVN] Fix test case for convergent calls
2023-05-19 16:15:06 +01:00
preserve-analysis.ll
…
preserve-memoryssa.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
propagate-ir-flags.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
readattrs.ll
[GVN][NFC] Add MSSA checks in tests 2/N (#137814)
2025-05-15 10:29:41 +05:30
remarks-selfdomination.ll
…
rle-clobbering-store.ll
[GVN] Drop Clobber dependency if store may overwrite only the same value (#68322)
2023-10-10 19:22:00 +03:00
rle-must-alias.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
rle-no-phi-translate.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
rle-nonlocal.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
scalable-memloc.ll
[Analysis] Add Scalable field in MemoryLocation.h (#69716)
2023-10-24 18:18:51 +01:00
setjmp.ll
[GVN][NFC] Add MSSA checks in tests 2/N (#137814)
2025-05-15 10:29:41 +05:30
simplify-icf-cache-invalidation.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
stale-loop-info.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#115817)
2024-11-12 09:11:47 +00:00
storeinvgroup.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
target-type.ll
…
tbaa.ll
[GVN][NFC] Add MSSA checks in tests 2/N (#137814)
2025-05-15 10:29:41 +05:30
trunc-nuw-equality.ll
[llvm][GVN] Propagate trunc nuw to i1 equalities (#143273)
2025-06-08 18:58:16 +02:00
unreachable_block_infinite_loop.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#115817)
2024-11-12 09:11:47 +00:00
unreachable-predecessor.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
volatile-nonvolatile.ll
[GVN] Convert some tests to opaque pointers (NFC)
2022-12-23 10:00:59 +01:00
vp_gather_scatter.ll
…
vscale.ll
[GVN][NFC] Add MSSA checks in tests 2/N (#137814)
2025-05-15 10:29:41 +05:30