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[ARM] Simplify extract of VMOVDRR

Authored by dmgreen on Feb 1 2021, 2:24 AM.

Description

[ARM] Simplify extract of VMOVDRR

Under SoftFP calling conventions, we can be left with
extract(bitcast(BUILD_VECTOR(VMOVDRR(a, b), ..))) patterns that can
simplify to a or b, depending on the extract lane.

Differential Revision: https://reviews.llvm.org/D94990

Details

Committed
dmgreenFeb 1 2021, 2:24 AM
Differential Revision
D94990: [ARM] Simplify extract of VMOVDRR
Parents
rG4648098f97fa: [VE] Change inetger constants 32-bit friendly
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