Mingjie Xu 159f1c048e

[IR] Optimize PHINode::removeIncomingValue() by swapping removed incoming value with the last incoming value. (#171963) ...

Current implementation uses `std::copy` to shift all incoming values
after the removed index. This patch optimizes
`PHINode::removeIncomingValue()` by replacing the linear shift of
incoming values with a swap-with-last strategy.

After this change, the relative order of incoming values after removal
is not preserved.

This improves compile-time for PHI nodes with many predecessors.

Depends:
https://github.com/llvm/llvm-project/pull/171955
https://github.com/llvm/llvm-project/pull/171956
https://github.com/llvm/llvm-project/pull/171960
https://github.com/llvm/llvm-project/pull/171962

2025-12-17 19:44:01 +08:00

..

addsub-inseltpoison.ll

[VectorCombine] support mismatching extract/insert indices for foldInsExtFNeg (#126408)

2025-11-07 18:35:40 +00:00

addsub.ll

[VectorCombine] support mismatching extract/insert indices for foldInsExtFNeg (#126408)

2025-11-07 18:35:40 +00:00

blendv-select.ll

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ctlz-loop.ll

InstCombine: Stop transforming EQ/NE of SHR to 0 to ULT/UGT if >1 use

2025-11-17 19:39:20 -08:00

earlycse-after-simplifycfg-two-entry-phi-node-folding.ll

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excessive-unrolling.ll

[X86] Update test to not iterate past array boundaries. (#163991)

2025-10-20 17:15:48 +01:00

fmaddsub.ll

[test][Transforms] Remove unsafe-fp-math uses part 3 (NFC) (#164787)

2025-10-24 18:49:45 +08:00

hadd.ll

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hoist-load-of-baseptr.ll

[llvm] Regenerate test checks including TBAA semantics (NFC)

2025-09-12 20:01:17 +02:00

horiz-math-inseltpoison.ll

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horiz-math.ll

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hsub.ll

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lit.local.cfg

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loadcombine.ll

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loop-idiom-vs-indvars.ll

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loop-vectorizer-noalias.ll

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masked-memory-ops-with-cf.ll

[IR] Replace alignment argument with attribute on masked intrinsics (#163802)

2025-10-20 08:50:09 +00:00

masked-memory-ops.ll

[IR] Replace alignment argument with attribute on masked intrinsics (#163802)

2025-10-20 08:50:09 +00:00

merge-functions2.ll

[InstCombine] Strip leading zero indices from GEP (#155415)

2025-09-01 09:58:11 +02:00

merge-functions3.ll

[InstCombine] Strip leading zero indices from GEP (#155415)

2025-09-01 09:58:11 +02:00

merge-functions.ll

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nancvt.ll

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peel-before-lv-to-enable-vectorization.ll

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pixel-splat.ll

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pr38280.ll

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pr48223.ll

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pr48844-br-to-switch-vectorization.ll

Revert "[LICM] Sink unused l-invariant loads in preheader. #157559"

2025-11-14 14:51:33 +01:00

pr50392.ll

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pr50555.ll

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pr52078.ll

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pr52253.ll

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pr52289.ll

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pr61061.ll

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pr67803.ll

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pr88239.ll

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pr94546.ll

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preserve-access-group.ll

[IR] Replace alignment argument with attribute on masked intrinsics (#163802)

2025-10-20 08:50:09 +00:00

scalarization-inseltpoison.ll

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scalarization.ll

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shuffle-inseltpoison.ll

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shuffle.ll

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simplifycfg-late.ll

[InstCombine] Strip leading zero indices from GEP (#155415)

2025-09-01 09:58:11 +02:00

speculation-vs-tbaa.ll

[llvm] Regenerate test checks including TBAA semantics (NFC)

2025-09-12 20:01:17 +02:00

spurious-peeling.ll

[llvm] Regenerate test checks including TBAA semantics (NFC)

2025-09-12 20:01:17 +02:00

SROA-after-final-loop-unrolling-2.ll

[llvm] Regenerate test checks including TBAA semantics (NFC)

2025-09-12 20:01:17 +02:00

SROA-after-final-loop-unrolling.ll

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SROA-after-loop-unrolling.ll

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store-constant-merge.ll

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unroll-vectorizer.ll

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unsigned-multiply-overflow-check.ll

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vdiv-nounroll.ll

[test][Transforms] Remove unsafe-fp-math uses part 3 (NFC) (#164787)

2025-10-24 18:49:45 +08:00

vdiv.ll

Revert "[LICM] Sink unused l-invariant loads in preheader. #157559"

2025-11-14 14:51:33 +01:00

vec-load-combine.ll

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vec-shift.ll

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vector-math.ll

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vector-reduction-known-first-value.ll

[VPlan] Simplify Plan's entry in removeBranchOnConst. (#154510)

2025-09-18 19:25:05 +01:00

vector-reductions-expanded.ll

[test][Transforms] Remove unsafe-fp-math uses part 3 (NFC) (#164787)

2025-10-24 18:49:45 +08:00

vector-reductions-logical.ll

[IR] Optimize PHINode::removeIncomingValue() by swapping removed incoming value with the last incoming value. (#171963)

2025-12-17 19:44:01 +08:00

vector-reductions.ll

[VPlan] Simplify Plan's entry in removeBranchOnConst. (#154510)

2025-09-18 19:25:05 +01:00