Simon Pilgrim 178f47143a

[CostModel][X86] getShuffleCost - shuffles with only one defined element are always cheap (#124412) ...

If we're just moving a single element around inside a 128-bit lane (probably as an alternative to extracting it), we can assume this is cheap as a single PSRLDQ/PSHUFD/SHUFPS.

I've got the horrid feeling we're moving towards matching all SSE shuffle patterns inside the cost model, but I'm going to do my best to avoid this for now :|

2025-01-27 15:56:22 +00:00

..

AArch64

[VectorCombine] foldPermuteOfBinops - fold "shuffle (binop (shuffle, other)), undef" --> "binop (shuffle), (shuffle)". (#122118)

2025-01-14 10:43:22 +00:00

AMDGPU

[VectorCombine] vectorizeLoadInsert - only fold when inserting into a poison vector (#119906)

2024-12-14 11:56:12 +00:00

Hexagon

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RISCV

[LLVM][IR] Use splat syntax when printing ConstantExpr based splats. (#116856)

2024-11-21 11:21:12 +00:00

X86

[CostModel][X86] getShuffleCost - shuffles with only one defined element are always cheap (#124412)

2025-01-27 15:56:22 +00:00

load-insert-store.ll

Typos: 'maxium', 'minium'

2023-10-23 10:42:28 +02:00

pr88796.ll

[LLVM][IR] Use splat syntax when printing ConstantExpr based splats. (#116856)

2024-11-21 11:21:12 +00:00