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Sam Tebbs 140b114cf3 [ARM] Sink add/mul(shufflevector(insertelement())) for MVE instruction selection
This patch sinks add/mul(shufflevector(insertelement())) into the basic block in which they are used so that they can then be selected together.

This is useful for various MVE instructions, such as vmla and others that take R registers.

Loop tests have been added to the vmla test file to make sure vmlas are generated in loops.

Differential revision: https://reviews.llvm.org/D66295

llvm-svn: 371218
2019-09-06 16:01:32 +00:00
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