tree 540ff62e99205c67da7a0fc56d2fc3a42636301e
parent 9b6003fe19dbbd99bd146f526e718f5e18d18efc
author Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> 1550182285 +0000
committer Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> 1550182285 +0000

[AMDGPU] Ressociate 'add (add x, y), z' to use SALU

Reassociate adds to collect scalar operands in a single
instruction when possible. That will result in a scalar
add followed by vector instead of two vector adds, thus
better utilizing SALU.

Differential Revision: https://reviews.llvm.org/D58220

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354066 91177308-0d34-0410-b5e6-96231b3b80d8