[Mesa-dev] [PATCH 0/2] codegen: add support for native SQRT for gm200+

[Karol Herbst]

A significant perf increase is expected for shaders doing a lot of sqrt
operations.

shader-db changes for complete series:
total instructions in shared programs : 5472103 -> 5454825 (-0.32%)
total gprs used in shared programs    : 647530 -> 647551 (0.00%)
total shared used in shared programs  : 389120 -> 389120 (0.00%)
total local used in shared programs   : 21064 -> 21064 (0.00%)
total bytes used in shared programs   : 58459304 -> 58274448 (-0.32%)

                local     shared        gpr       inst      bytes 
    helped           0           0           0        8526        8526 
      hurt           0           0          21          83          83

Karol Herbst (2):
  gm200/ir: add native OP_SQRT support
  gm200/ir: optimize rcp(sqrt) to rsq

 .../drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp    |  4 +++-
 .../drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp |  3 +++
 .../drivers/nouveau/codegen/nv50_ir_peephole.cpp      | 11 ++++++++++-
 .../drivers/nouveau/codegen/nv50_ir_target_gm107.cpp  |  8 +++++++-
 .../drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp   |  1 +
 5 files changed, 24 insertions(+), 3 deletions(-)

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2.17.1