[PATCH] D25650: [AVX-512] Add support for turning a 256-bit load that goes to both halfs of an insert_subvector into a subvector broadcast.
Craig Topper via llvm-commits
llvm-commits at lists.llvm.org
Sat Oct 15 22:17:38 PDT 2016
craig.topper created this revision.
craig.topper added reviewers: RKSimon, delena, igorb.
craig.topper added a subscriber: llvm-commits.
This builds on the existing support to do this for 128-bit loads into 256-bit vectors and generalizes it.
New patterns added to support 8-bit and 16-bit elements, v8f32->v16f32 without DQI instructions, and adding fallback for when the load can't be folded.
https://reviews.llvm.org/D25650
Files:
lib/Target/X86/X86ISelLowering.cpp
lib/Target/X86/X86InstrAVX512.td
test/CodeGen/X86/avx512-vbroadcasti256.ll
test/CodeGen/X86/subvector-broadcast.ll
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