2 Commits

Author SHA1 Message Date
Alexey Bataev
5d2cc8e242 [SLP]Fix emission of buildvectors with full match.
If the buildvector node is a full match of another node, need to
correctly build the mask for the original vector value and build common
mask for the emitted node.
2023-06-28 13:47:08 -07:00
Vasileios Porpodas
9d5466849a [SLP][NFC] Precommit test that exposes a bug in ShuffleBuilder.
ShuffleBuilder generates a zero mask here:
`[[TMP6:%.*]] = shufflevector <2 x float> [[TMP3]], <2 x float> poison, <4 x i32> zeroinitializer`
But the correct mask is `0,0,1,1`, or we should have reused `TMP4`.

Differential Revision: https://reviews.llvm.org/D152868
2023-06-13 16:52:36 -07:00