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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2020-12-17 10:12:51 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2020-12-17 10:25:25 +0000 |
| commit | cdb692ee0c6745ea008ee6cc00fe1e65021516bb (patch) | |
| tree | 2908c8f326b2a51ab446139d923e57c5f6e633b6 /llvm/tools/llvm-objdump/llvm-objdump.cpp | |
| parent | 352cba2441c6c4e00f067c9c68358cc0a6a5fffb (diff) | |
| download | llvm-cdb692ee0c6745ea008ee6cc00fe1e65021516bb.zip llvm-cdb692ee0c6745ea008ee6cc00fe1e65021516bb.tar.gz llvm-cdb692ee0c6745ea008ee6cc00fe1e65021516bb.tar.bz2 | |
[X86] Add X86ISD::SUBV_BROADCAST_LOAD and begin removing X86ISD::SUBV_BROADCAST (PR38969)
Subvector broadcasts are only load instructions, yet X86ISD::SUBV_BROADCAST treats them more generally, requiring a lot of fallback tablegen patterns.
This initial patch replaces constant vector lowering inside lowerBuildVectorAsBroadcast with direct X86ISD::SUBV_BROADCAST_LOAD loads which helps us merge a number of equivalent loads/broadcasts.
As well as general plumbing/analysis additions for SUBV_BROADCAST_LOAD, I needed to wrap SelectionDAG::makeEquivalentMemoryOrdering so it can handle result chains from non generic LoadSDNode nodes.
Later patches will continue to replace X86ISD::SUBV_BROADCAST usage.
Differential Revision: https://reviews.llvm.org/D92645
Diffstat (limited to 'llvm/tools/llvm-objdump/llvm-objdump.cpp')
0 files changed, 0 insertions, 0 deletions