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Author SHA1 Message Date
Matt Arsenault 709374d186 AMDGPU: Improve hack for packing conversion ops 
Mutate the node type during selection when it
doesn't matter. This avoids an intermediate bitcast
node on targets with legal i16/f16.

Also fixes missing output modifiers on v_cvt_pkrtz_f32_f16,
which I assume are OK.

llvm-svn: 338619
 2018-08-01 20:13:58 +00:00
Krzysztof Parzyszek 70f027022c Account for undef values from predecessors in extendSegmentsToUses 
It is legal for a PHI node not to have a live value in a predecessor
as long as the end of the predecessor is jointly dominated by an undef
value.

llvm-svn: 335607
 2018-06-26 14:37:16 +00:00