mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 20:23:11 +01:00
df7173628b
Summary: This patch adds the following intrinsics for non-temporal gather loads and scatter stores: * aarch64_sve_ldnt1_gather_index * aarch64_sve_stnt1_scatter_index These intrinsics implement the "scalar + vector of indices" addressing mode. As opposed to regular and first-faulting gathers/scatters, there's no instruction that would take indices and then scale them. Instead, the indices for non-temporal gathers/scatters are scaled before the intrinsics are lowered to `ldnt1` instructions. The new ISD nodes, GLDNT1_INDEX and SSTNT1_INDEX, are only used as placeholders so that we can easily identify the cases implemented in this patch in performGatherLoadCombine and performScatterStoreCombined. Once encountered, they are replaced with: * GLDNT1_INDEX -> SPLAT_VECTOR + SHL + GLDNT1 * SSTNT1_INDEX -> SPLAT_VECTOR + SHL + SSTNT1 The patterns for lowering ISD::SHL for scalable vectors (required by this patch) were missing, so these are added too. Reviewed By: sdesmalen Differential Revision: https://reviews.llvm.org/D75601 |
||
---|---|---|
.. | ||
llvm | ||
llvm-c |