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llvm-project/llvm/test/Transforms/SCCP
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Kunqiu Chen ea45fec99c
[PredicateInfo] Reserve adjacent LN_Last defs for the same phi use (#164577) 
This patch fixes a missed optimization issue: predicate infos might be
lost in phi-use scenarios.

Due to the existence of and-chains, a phi-use might be associated with
multiple LN_Last predicate infos.
E.g.,
```cpp
// TWO LN_Last Predicate Info defs:
// 1. a >= 1
// 2. a < 2
if ( a < 1 || a >= 2) {
  a = 1;
}  
// PHI use of `a`
use(a)
```
However, previously, `popStackUntilDFSScope` reserved only ONE LN_Last
def for a phi use (i.e., reserve only one of `a >= 1` / `a < 2`),
although there might be multiple LN_Last defs for the same phi use.


This patch reserves the adjacent LN_Last defs if they are designated for
the same phi use.
2025-10-22 22:17:39 +08:00
..
2002-05-02-MissSecondInst.ll
…
2002-05-20-MissedIncomingValue.ll
…
2002-05-21-InvalidSimplify.ll
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2002-08-30-GetElementPtrTest.ll
…
2003-06-24-OverdefinedPHIValue.ll
…
2003-08-26-InvokeHandling.ll
…
2004-11-16-DeadInvoke.ll
…
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
…
2006-12-19-UndefBug.ll
…
2007-05-16-InvokeCrash.ll
…
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
…
2008-05-23-UndefCallFold.ll
…
2008-06-09-WeakProp.ll
…
2009-01-14-IPSCCP-Invoke.ll
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
2009-05-27-VectorOperandZero.ll
…
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
[SCCP] Swap out range metadata to range attribute (#90134)
2024-04-26 11:04:47 +09:00
apfloat-basictest.ll
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apint-array.ll
…
apint-basictest2.ll
…
apint-basictest3.ll
…
apint-basictest4.ll
…
apint-basictest.ll
…
apint-bigarray.ll
…
apint-bigint2.ll
[ConstantFolding] Infer getelementptr nuw flag (#119214)
2024-12-09 16:44:05 +01:00
apint-bigint.ll
…
apint-ipsccp1.ll
…
apint-ipsccp2.ll
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
apint-ipsccp3.ll
…
apint-ipsccp4.ll
…
apint-load.ll
…
apint-phi.ll
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apint-select.ll
…
apint-xor.ll
…
arg-count-mismatch.ll
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
arg-type-mismatch.ll
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ashr.ll
…
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
[IR] Require DataLayout for pointer cast elimination (#162279)
2025-10-07 17:19:48 +02:00
binaryops-range-special-cases.ll
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bitcast.ll
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calltest.ll
…
clang-arc-rv.ll
…
comdat-ipo.ll
…
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
[PredicateInfo] Reserve adjacent LN_Last defs for the same phi use (#164577)
2025-10-22 22:17:39 +08:00
constant-range-struct.ll
[SCCP] Support constant structure in PhiNode (#163713)
2025-10-19 03:57:56 +00:00
constant-struct.ll
…
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
[SCCP] Infer return attributes in SCCP as well (#106732)
2024-09-02 11:44:37 +02:00
float-denormal-simplification.ll
[SCCP] Add context to SimplifyQuery (#100831)
2024-07-29 15:21:57 +02:00
float-nan-simplification.ll
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float-phis.ll
…
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
…
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
…
global.ll
…
indirectbr.ll
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
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
[IPSCCP] Infer attributes on arguments (#107114)
2024-09-16 10:23:41 +02:00
ip-constant-ranges-intersection.ll
[SCCP] Merge return range attributes (#105998)
2024-08-26 09:35:05 +02:00
ip-constant-ranges.ll
[IPSCCP] Infer attributes on arguments (#107114)
2024-09-16 10:23:41 +02:00
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
[IPSCCP] Infer attributes on arguments (#107114)
2024-09-16 10:23:41 +02:00
ip-ranges-select.ll
[IPSCCP] Infer attributes on arguments (#107114)
2024-09-16 10:23:41 +02:00
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
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
ipsccp-cycles.ll
…
ipsccp-noundef.ll
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
ipsccp-phi-one-pred-dead.ll
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ipsccp-predinfo-order.ll
…
ipsccp-preserve-analysis.ll
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
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
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
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
[Tests] Regenerate test checks (NFC)
2024-09-03 11:42:47 +02:00
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
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
multiple_callbacks.ll
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musttail-call.ll
[IPSCCP] Infer attributes on arguments (#107114)
2024-09-16 10:23:41 +02:00
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
[SCCP] Infer return attributes in SCCP as well (#106732)
2024-09-02 11:44:37 +02:00
pointer-nonnull.ll
[IPSCCP] Infer attributes on arguments (#107114)
2024-09-16 10:23:41 +02:00
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
[IPSCCP] Variable not visible at Og: (#77901)
2024-04-16 09:37:51 +01:00
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
[DebugInfo][SCCPSolver] Fix missing debug locations (#98876)
2024-07-18 09:03:03 +01:00
pthreads.ll
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range-and-ip.ll
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
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
[IPSCCP] Intersect attribute info for interprocedural args (#106397)
2024-08-29 09:34:56 +02:00
range-mul-nuw-nsw-flags.ll
[ConstantRange][LVI] Add support for multiplyWithNoWrap
2024-05-24 19:25:09 +02:00
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
Revert "[Transforms][IPO] Add func suffix in ArgumentPromotion and DeadArgume… (#105742)"
2024-09-19 03:54:13 -07:00
relax-range-checks.ll
[SCCP] Strengthen two-instruction range checks (#162008)
2025-10-06 07:14:46 +00:00
remove-call-inst.ll
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
replace-dereferenceable-ptr-with-undereferenceable.ll
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report-changed.ll
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resolvedundefsin-tracked-fn.ll
[IPSCCP] Infer attributes on arguments (#107114)
2024-09-16 10:23:41 +02:00
return-argument.ll
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return-constant.ll
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
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
…
sccptest.ll
[SCCP] Enable PredicateInfo for non-interprocedural SCCP (#153003)
2025-08-19 10:59:38 +02:00
select.ll
[Tests] Regenerate test checks (NFC)
2024-09-03 11:42:47 +02:00
sitofp.ll
[SCCP] Add nneg flag to uitofp if its operand is non-negative
2024-05-07 14:57:29 -05:00
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
[SCCP] Use poison instead of undef when zapping returns
2024-06-25 12:35:25 +02:00
sub-nuw-nsw-flags.ll
…
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
…
switch-undef-constantfoldterminator.ll
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switch.ll
[IPSCCP] Infer attributes on arguments (#107114)
2024-09-16 10:23:41 +02:00
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
…