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4 Commits

Author SHA1 Message Date
Stanislav Mekhanoshin 6851ddf942 [AMDGPU] Combine and x, (sext cc from i1) => select cc, x, 0 
Also factored out function to check if a boolean is an already
deserialized value which does not require v_cndmask_b32 to be
loaded. Added binary logical operators to its check.

Differential Revision: https://reviews.llvm.org/D34500

llvm-svn: 306439
 2017-06-27 18:25:26 +00:00
Stanislav Mekhanoshin 3ed38c601a [AMDGPU] Add FP_CLASS to the add/setcc combine 
This is one of the nodes which also compile as v_cmp_*.

Differential Revision: https://reviews.llvm.org/D34485

llvm-svn: 305970
 2017-06-21 23:46:22 +00:00
Stanislav Mekhanoshin a8b26936d0 [AMDGPU] Combine add and adde, sub and sube 
If one of the arguments of adde/sube is zero we can fold another
add/sub into it.

Differential Revision: https://reviews.llvm.org/D34374

llvm-svn: 305964
 2017-06-21 22:30:01 +00:00
Stanislav Mekhanoshin e3eb42cef6 [AMDGPU] simplify add x, *ext (setcc) => addc|subb x, 0, setcc 
This simplification allows to avoid generating v_cndmask_b32
to serialize condition code between compare and use.

Differential Revision: https://reviews.llvm.org/D34300

llvm-svn: 305962
 2017-06-21 22:05:06 +00:00