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author | Bradley Smith <bradley.smith@arm.com> | 2021-11-24 16:47:02 +0000 |
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committer | Bradley Smith <bradley.smith@arm.com> | 2021-11-29 11:56:07 +0000 |
commit | 61808066325ff0828bab7f016e8798b78d2e6b49 (patch) | |
tree | d38f49bb33a595473709822424bf2b75e91b60f6 /llvm/lib/Transforms/Utils/BasicBlockUtils.cpp | |
parent | cffe3a084f87ad2ed17aeebc1075eb100182114e (diff) | |
download | llvm-61808066325ff0828bab7f016e8798b78d2e6b49.zip llvm-61808066325ff0828bab7f016e8798b78d2e6b49.tar.gz llvm-61808066325ff0828bab7f016e8798b78d2e6b49.tar.bz2 |
[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
Diffstat (limited to 'llvm/lib/Transforms/Utils/BasicBlockUtils.cpp')
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