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llvm-project/llvm/test/Transforms/SCCP
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Yingwei Zheng 05c4681668
[SCCP] Relax two-instruction range checks (#158495) 
If we know x in R1, the range check `x in R2` can be relaxed into `x in
Union(R2, Inverse(R1))`. The latter one may be more efficient if we can
represent it with one icmp.
Fixes regressions introduced by
https://github.com/llvm/llvm-project/pull/156497.

Proof for `(X & -Pow2) == C -> (X - C) < Pow2`:
https://alive2.llvm.org/ce/z/HMgkuu

Compile-time impact:
https://llvm-compile-time-tracker.com/compare.php?from=ead4f3e271fdf6918aef2ede3a7134811147d276&to=bee3d902dd505cf9b11499ba4f230e4e8ae96b92&stat=instructions%3Au
2025-09-17 23:50:38 +08:00
..
2002-05-02-MissSecondInst.ll
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2002-05-20-MissedIncomingValue.ll
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2002-05-21-InvalidSimplify.ll
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2002-08-30-GetElementPtrTest.ll
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2003-06-24-OverdefinedPHIValue.ll
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2003-08-26-InvokeHandling.ll
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2004-11-16-DeadInvoke.ll
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2004-12-10-UndefBranchBug.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
2006-10-23-IPSCCP-Crash.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
2006-12-04-PackedType.ll
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2006-12-19-UndefBug.ll
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2007-05-16-InvokeCrash.ll
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2008-01-27-UndefCorrelate.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
2008-04-22-multiple-ret-sccp.ll
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2008-05-23-UndefCallFold.ll
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2008-06-09-WeakProp.ll
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2009-01-14-IPSCCP-Invoke.ll
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2009-05-27-VectorOperandZero.ll
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2009-09-24-byval-ptr.ll
[ConstantFolding] Infer getelementptr nuw flag (#119214)
2024-12-09 16:44:05 +01:00
add-nuw-nsw-flags.ll
[LLVM][IR] Use splat syntax when printing Constant[Data]Vector. (#112548)
2024-11-06 11:53:33 +00:00
and-add-shl.ll
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apfloat-basictest.ll
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apint-array.ll
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apint-basictest2.ll
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apint-basictest3.ll
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apint-basictest4.ll
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apint-basictest.ll
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apint-bigarray.ll
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apint-bigint2.ll
[ConstantFolding] Infer getelementptr nuw flag (#119214)
2024-12-09 16:44:05 +01:00
apint-bigint.ll
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apint-ipsccp1.ll
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apint-ipsccp2.ll
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apint-ipsccp3.ll
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apint-ipsccp4.ll
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apint-load.ll
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apint-phi.ll
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apint-select.ll
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apint-xor.ll
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arg-count-mismatch.ll
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arg-type-mismatch.ll
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ashr.ll
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assume.ll
[PredicateInfo] Handle trunc nuw i1 condition. (#152988)
2025-08-11 13:00:54 +02:00
atomic-load-store.ll
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atomic.ll
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binaryops-constexprs.ll
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binaryops-range-special-cases.ll
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bitcast.ll
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calltest.ll
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clang-arc-rv.ll
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comdat-ipo.ll
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conditions-iter-order.ll
[SCCP] Infer nuw for gep nusw with non-negative offsets (#118819)
2024-12-06 09:52:32 +01:00
conditions-ranges-with-undef.ll
[SCCP] Remove masking operations (#142736)
2025-06-04 22:31:08 +08:00
conditions-ranges.ll
[SCCP] Add support for trunc nuw range. (#152990)
2025-08-12 13:48:55 +02:00
constant-range-struct.ll
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constant-struct.ll
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crash.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
dangling-block-address.ll
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deadarg.ll
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definite-initializer.ll
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divrem-crash.ll
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divrem.ll
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domtree-update.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
dont-zap-return.ll
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exact-flags.ll
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float-denormal-simplification.ll
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float-nan-simplification.ll
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float-phis.ll
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fp-bc-icmp-const-fold.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
freeze.ll
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gep-nuw.ll
[SCCP] Infer nuw for gep nusw with non-negative offsets (#118819)
2024-12-06 09:52:32 +01:00
global-alias-constprop.ll
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global.ll
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indirectbr.ll
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int-phis.ll
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intrinsics.ll
[LLVM][IR] Use splat syntax when printing Constant[Data]Vector. (#112548)
2024-11-06 11:53:33 +00:00
ip-add-range-to-call.ll
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ip-constant-ranges-intersection.ll
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ip-constant-ranges.ll
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ip-ranges-binaryops.ll
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ip-ranges-casts.ll
[LLVM][IR] Use splat syntax when printing Constant[Data]Vector. (#112548)
2024-11-06 11:53:33 +00:00
ip-ranges-phis.ll
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ip-ranges-select.ll
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ip-ranges-sext.ll
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ipsccp-addr-taken.ll
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ipsccp-basic.ll
[RemoveDIs] Remove "try-debuginfo-iterators..." test flags (#130298)
2025-03-14 15:50:49 +00:00
ipsccp-branch-unresolved-undef.ll
[RemoveDIs] Remove "try-debuginfo-iterators..." test flags (#130298)
2025-03-14 15:50:49 +00:00
ipsccp-clear-returned.ll
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ipsccp-cycles.ll
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ipsccp-noundef.ll
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ipsccp-phi-one-pred-dead.ll
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ipsccp-predinfo-order.ll
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ipsccp-preserve-analysis.ll
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ipsccp-preserve-pdt.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
ipsccp-range-crashes.ll
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ipsccp-ssa-copy-nested-conds.ll
[SCCP] Infer nuw for gep nusw with non-negative offsets (#118819)
2024-12-06 09:52:32 +01:00
ipscp-drop-argmemonly.ll
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issue59602-assume-like-call-users.ll
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issue59661-missing-predicate-info-for-ssa-copy.ll
[PredicateInfo] Use bitcast instead of ssa.copy (#151174)
2025-08-11 09:25:01 +02:00
landingpad.ll
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latticeval-invalidate.ll
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lifetime.ll
[SCCP][PredicateInfo] Do not predicate argument of lifetime intrinsic
2025-08-12 12:56:08 +02:00
load-store-range.ll
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loadtest2.ll
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loadtest.ll
[RemoveDIs] Remove "try-debuginfo-iterators..." test flags (#130298)
2025-03-14 15:50:49 +00:00
logical-nuke.ll
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metadata.ll
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multiple_callbacks.ll
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musttail-call.ll
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naked-return.ll
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no-fold-fcmp-dynamic-denormal-mode-issue114947.ll
[ConstantFolding][SVE] Do not fold fcmp of denormal without known mode. (#150614)
2025-07-29 12:37:59 +01:00
opaque-ptr.ll
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openmp_parallel_for.ll
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overdefined-div.ll
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overdefined-ext.ll
[NFC][LLVM][Tests] Add RUN lines to verify Constant{Int/FP} based splats.
2025-09-17 10:20:59 +00:00
phi-cycle.ll
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phis.ll
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pointer-nonnull.ll
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pr27712.ll
[SCCP] Enable PredicateInfo for non-interprocedural SCCP (#153003)
2025-08-19 10:59:38 +02:00
pr35357.ll
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pr45185-range-predinfo.ll
[IR] Convert from nocapture to captures(none) (#123181)
2025-01-29 16:56:47 +01:00
pr49582-iterator-invalidation.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
pr50901.ll
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pr52253.ll
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pr79696.ll
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PR16052.ll
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PR26044.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
PR43857.ll
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predicateinfo-cond.ll
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preserve-analysis.ll
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preserving-debugloc-signedinst-branch-feasible-succ.ll
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pthreads.ll
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range-and-ip.ll
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range-and-or-bit-masked.ll
[ConstantRange] Estimate tighter lower (upper) bounds for masked binary and (or) (#120352)
2024-12-31 18:40:17 -08:00
range-and.ll
[SCCP] Remove masking operations (#142736)
2025-06-04 22:31:08 +08:00
range-attribute.ll
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range-mul-nuw-nsw-flags.ll
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range-with-undef.ll
[SCCP] Remove masking operations (#142736)
2025-06-04 22:31:08 +08:00
ranges-sext.ll
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recursion.ll
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relax-range-checks.ll
[SCCP] Relax two-instruction range checks (#158495)
2025-09-17 23:50:38 +08:00
remove-call-inst.ll
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replace-dereferenceable-ptr-with-undereferenceable.ll
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report-changed.ll
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resolvedundefsin-tracked-fn.ll
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return-argument.ll
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return-constant.ll
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return-constants.ll
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return-zapped.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
retvalue-undef.ll
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sccptest.ll
[SCCP] Enable PredicateInfo for non-interprocedural SCCP (#153003)
2025-08-19 10:59:38 +02:00
select.ll
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sitofp.ll
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solve-after-each-resolving-undefs-for-function.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
strictfp-phis-fcmp.ll
[Test] Fix usage of constrained intrinsics (#113523)
2024-10-28 14:07:32 +07:00
strictfp-phis-fcmps.ll
[Test] Fix usage of constrained intrinsics (#113523)
2024-10-28 14:07:32 +07:00
struct-arg-resolve-undefs.ll
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sub-nuw-nsw-flags.ll
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switch-constantfold-crash.ll
[llvm] Remove br i1 undef from some regression tests [NFC] (#118419)
2024-12-03 20:54:36 +00:00
switch-multiple-undef.ll
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switch-undef-constantfoldterminator.ll
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switch.ll
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thread_local_acs.ll
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trunc-nuw-nsw-flags.ll
[LLVM][IR] Use splat syntax when printing Constant[Data]Vector. (#112548)
2024-11-06 11:53:33 +00:00
ub-shift.ll
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ubsan_overflow.ll
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undef-resolve.ll
[SCCP] Enable PredicateInfo for non-interprocedural SCCP (#153003)
2025-08-19 10:59:38 +02:00
uscmp.ll
[SCCP] Simplify [us]cmp(X, Y) into X - Y (#144717)
2025-07-20 15:01:44 +08:00
user-with-multiple-uses.ll
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vector-bitcast.ll
[LLVM][IR] Use splat syntax when printing Constant[Data]Vector. (#112548)
2024-11-06 11:53:33 +00:00
vscale-gep.ll
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vscale-intrinsic.ll
[SCCP] Handle llvm.vscale intrinsic calls (#114033)
2024-10-31 12:22:15 +00:00
widening.ll
[SCCP] Enable PredicateInfo for non-interprocedural SCCP (#153003)
2025-08-19 10:59:38 +02:00
with.overflow.ll
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