Simon Pilgrim 29c89d7265 [VectorCombine] foldShuffleOfShuffles - fold "shuffle (shuffle x, y, m1), (shuffle y, x, m2)" -> "shuffle x, y, m3" (#120959) ...

foldShuffleOfShuffles currently only folds unary shuffles to ensure we don't end up with a merged shuffle with more than 2 sources, but this prevented cases where both shuffles were sharing sources.

This patch generalizes the merge process to find up to 2 sources as it merges with the inner shuffles, it also moves the undef/poison handling stages into the merge loop as well.

Fixes #120764

2024-12-23 14:56:15 +00:00

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extract-scalable.ll

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lit.local.cfg

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load-extract-insert-store-scalarization.ll

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load-extractelement-scalarization.ll

[VectorCombine] isExtractExtractCheap - specify the extract/insert shuffle mask to improve shuffle costs (#114780)

2024-11-13 12:31:39 +00:00

scalarize-scalable.ll

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select-shuffle.ll

[VectorCombine] foldShuffleOfShuffles - fold "shuffle (shuffle x, y, m1), (shuffle y, x, m2)" -> "shuffle x, y, m3" (#120959)

2024-12-23 14:56:15 +00:00

shrink-types.ll

[LLVM][IR] Use splat syntax when printing Constant[Data]Vector. (#112548)

2024-11-06 11:53:33 +00:00

shuffletoidentity-concat.ll

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shuffletoidentity.ll

[VectorCombine] Add fp cast handling for shuffletoidentity (#120641)

2024-12-20 15:05:08 +00:00

vecreduce-shuffle.ll

[LLVM][IR] Use splat syntax when printing Constant[Data]Vector. (#112548)

2024-11-06 11:53:33 +00:00

vscale-bitcast-shuffle-inseltpoison.ll

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vscale-bitcast-shuffle.ll

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