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3 Commits

Author SHA1 Message Date
Stanislav Mekhanoshin 0330660403 [AMDGPU] Untangle SDWA pass from SIShrinkInstructions 
Remove dependency of SDWA pass on SIShrinkInstructions.
The goal is to move SDWA even higher in the stack to avoid second run
of MachineLICM, MachineCSE and SIFoldOperands.

Also added handling to preserve original src modifiers.

Differential Revision: https://reviews.llvm.org/D33860

llvm-svn: 304665
 2017-06-03 17:39:47 +00:00
Stanislav Mekhanoshin 56ea488d8b [AMDGPU] Allow SDWA in instructions with immediates and SGPRs 
An encoding does not allow to use SDWA in an instruction with
scalar operands, either literals or SGPRs. That is however possible
to copy these operands into a VGPR first.

Several copies of the value are produced if multiple SDWA conversions
were done. To cleanup MachineLICM (to hoist copies out of loops),
MachineCSE (to remove duplicate copies) and SIFoldOperands (to replace
SGPR to VGPR copy with immediate copy right to the VGPR) runs are added
after the SDWA pass.

Differential Revision: https://reviews.llvm.org/D33583

llvm-svn: 304219
 2017-05-30 16:49:24 +00:00
Marek Olsak 584d2c05d4 AMDGPU: GFX9 GS and HS shaders always have the scratch wave offset in SGPR5 
Reviewers: arsenm, nhaehnle

Subscribers: kzhuravl, wdng, yaxunl, dstuttard, tpr, t-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D32645

llvm-svn: 302200
 2017-05-04 22:25:20 +00:00