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[RISCV] Make lowerVECTOR_SHUFFLEAsVSlidedown follow source until not EXTRACT_SUBVECTOR.
authorHan-Kuan Chen <hankuan.chen@sifive.com>
Tue, 15 Nov 2022 11:34:44 +0000 (03:34 -0800)
committerHan-Kuan Chen <hankuan.chen@sifive.com>
Fri, 18 Nov 2022 06:32:53 +0000 (22:32 -0800)
commit7e6dbfcd9d26a8e272823669399922e2782139c8
tree47be3d60f205f553bd36a587f8de6c085dd1aefctree | snapshot
parent2e58d4bc4b3f449eac0d288f483049aba23a5f7ccommit | diff
[RISCV] Make lowerVECTOR_SHUFFLEAsVSlidedown follow source until not EXTRACT_SUBVECTOR.

Current lowerVECTOR_SHUFFLEAsVSlidedown only seeks whether input are
EXTRACT_SUBVECTOR and their source are same. The commit will make the
function seek input and their source until they are not
EXTRACT_SUBVECTOR.

Differential Revision: https://reviews.llvm.org/D138025
llvm/lib/Target/RISCV/RISCVISelLowering.cpp diff | blob | history
llvm/test/CodeGen/RISCV/rvv/fixed-vectors-int-shuffles.ll diff | blob | history
Domain: System / Toolchain;