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5 Commits

Author SHA1 Message Date
Tom Stellard 0d23ebe888 AMDGPU/SI: Implement a custom MachineSchedStrategy 
Summary:
GCNSchedStrategy re-uses most of GenericScheduler, it's just uses
a different method to compute the excess and critical register
pressure limits.

It's not enabled by default, to enable it you need to pass -misched=gcn
to llc.

Shader DB stats:

32464 shaders in 17874 tests
Totals:
SGPRS: 1542846 -> 1643125 (6.50 %)
VGPRS: 1005595 -> 904653 (-10.04 %)
Spilled SGPRs: 29929 -> 27745 (-7.30 %)
Spilled VGPRs: 334 -> 352 (5.39 %)
Scratch VGPRs: 1612 -> 1624 (0.74 %) dwords per thread
Code Size: 36688188 -> 37034900 (0.95 %) bytes
LDS: 1913 -> 1913 (0.00 %) blocks
Max Waves: 254101 -> 265125 (4.34 %)
Wait states: 0 -> 0 (0.00 %)

Totals from affected shaders:
SGPRS: 1338220 -> 1438499 (7.49 %)
VGPRS: 886221 -> 785279 (-11.39 %)
Spilled SGPRs: 29869 -> 27685 (-7.31 %)
Spilled VGPRs: 334 -> 352 (5.39 %)
Scratch VGPRs: 1612 -> 1624 (0.74 %) dwords per thread
Code Size: 34315716 -> 34662428 (1.01 %) bytes
LDS: 1551 -> 1551 (0.00 %) blocks
Max Waves: 188127 -> 199151 (5.86 %)
Wait states: 0 -> 0 (0.00 %)

Reviewers: arsenm, mareko, nhaehnle, MatzeB, atrick

Subscribers: arsenm, kzhuravl, llvm-commits

Differential Revision: https://reviews.llvm.org/D23688

llvm-svn: 279995
 2016-08-29 19:42:52 +00:00
Tom Stellard 9112758077 AMDGPU/SI: Add latency for export instructions 
Reviewers: arsenm, nhaehnle

Subscribers: nhaehnle, arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D18599

llvm-svn: 265708
 2016-04-07 18:30:05 +00:00
Nicolai Haehnle df3a20cd80 AMDGPU: Add a shader calling convention 
This makes it possible to distinguish between mesa shaders
and other kernels even in the presence of compute shaders.

Patch By: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

Differential Revision: http://reviews.llvm.org/D18559

llvm-svn: 265589
 2016-04-06 19:40:20 +00:00
Marek Olsak 46dadbfab2 AMDGPU/SI: Fix a GPU hang with POS_W_FLOAT enabled 
Reviewers: tstellarAMD, arsenm

Subscribers: arsenm

Differential Revision: http://reviews.llvm.org/D16037

llvm-svn: 257625
 2016-01-13 17:23:20 +00:00
Marek Olsak 774c0d689f AMDGPU/SI: Add tests for non-void functions and InitialPSInputAddr 
Reviewers: tstellarAMD, arsenm

Differential Revision: http://reviews.llvm.org/D16036

llvm-svn: 257624
 2016-01-13 17:23:15 +00:00