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d9b910d9d2
This patch implements vector_splice in tablegen for:
a) when the immediate is equal to -1 (Imm==1) and uses:
INSR + LASTB
For instance :
@llvm.experimental.vector.splice(Vector_1, Vector_2, -1)
@llvm.experimental.vector.splice(<A,B,C,D>, <E,F,G,H>, 1) ==> <D, E, F, G>
LAST RegLast, Vector_1 // RegLast = D
INSR Res, (Vector_1 >> 1), RegLast // Res = D + E, F, G
Differential Revision: https://reviews.llvm.org/D105633
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