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AMDGPU: Use undef_tied_input on VOP3P instructions

Authored by arsenm on Feb 18 2020, 3:51 PM.



In a future commit this will help simplify patterns.

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arsenm created this revision.Feb 18 2020, 3:51 PM
Herald added a project: Restricted Project. · View Herald TranscriptFeb 18 2020, 3:51 PM
rampitec accepted this revision.Feb 18 2020, 4:11 PM
This revision is now accepted and ready to land.Feb 18 2020, 4:11 PM
arsenm abandoned this revision.Mon, Mar 9, 12:41 PM

This needs additional work in tablegen to avoid some ugly codegen hacks, since the operand ends up not getting a register class