[all-commits] [llvm/llvm-project] 618080: [AArch64][SVE] Mark fixed-type FP extending/trunca...
Bradley Smith via All-commits
all-commits at lists.llvm.org
Mon Nov 29 03:57:37 PST 2021
Author: Bradley Smith <bradley.smith at arm.com>
Date: 2021-11-29 (Mon, 29 Nov 2021)
[AArch64][SVE] Mark fixed-type FP extending/truncating loads/stores as custom
This allows the generic DAG combine to fold fp_extend/fp_trunc into
loads/stores which we can then lower into a integer extending
load/truncating store plus an FP_EXTEND/FP_ROUND.
The nuance here is that fixed-type FP_EXTEND/FP_ROUND require unpacked
types hence lowering them introduces an unpack/zip. By allowing these
nodes to be combined with loads/store we make it much easier to have
this unpack/zip combined into the load/store by our custom lowering.
Differential Revision: https://reviews.llvm.org/D114580
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