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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 4581f37e7c Improve handling of COPY instructions with identical value numbers 
Testcases provided by Tim Renouf.

Differential Revision: https://reviews.llvm.org/D48102

llvm-svn: 335472
 2018-06-25 13:46:41 +00:00