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(parent: a314050) | patch

author	Matt Arsenault <Matthew.Arsenault@amd.com>
	Sat, 15 Feb 2020 02:23:07 +0000 (21:23 -0500)
committer	Matt Arsenault <arsenm2@gmail.com>
	Tue, 10 Mar 2020 15:18:48 +0000 (11:18 -0400)
commit	67cfbec7461312ce6c1a8f38ad4f45b7886d51ef
tree	f116a301ff0112f60a5d20efe9746c3342d2ab4d	tree \| snapshot
parent	a314050065042ac4e0fc39a774b9d396cb3a0e9d	commit \| diff

AMDGPU/GlobalISel: Insert readfirstlane on SGPR returns

In case the source value ends up in a VGPR, insert a readfirstlane to
avoid producing an illegal copy later. If it turns out to be
unnecessary, it can be folded out.

Domain: System / Toolchain;