i965: Move the back-end compiler to src/intel/compiler

[mesa.git] / src / mesa / drivers / dri / i965 / brw_nir_trig_workarounds.py

diff --git a/src/mesa/drivers/dri/i965/brw_nir_trig_workarounds.py b/src/mesa/drivers/dri/i965/brw_nir_trig_workarounds.py
deleted file mode 100644 (file)
index 6a77d64..0000000
--- a/src/mesa/drivers/dri/i965/brw_nir_trig_workarounds.py
+++ /dev/null
@@ -1,43 +0,0 @@
-#
-# Copyright (C) 2016 Intel Corporation
-#
-# Permission is hereby granted, free of charge, to any person obtaining a
-# copy of this software and associated documentation files (the "Software"),
-# to deal in the Software without restriction, including without limitation
-# the rights to use, copy, modify, merge, publish, distribute, sublicense,
-# and/or sell copies of the Software, and to permit persons to whom the
-# Software is furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice (including the next
-# paragraph) shall be included in all copies or substantial portions of the
-# Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
-# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-# IN THE SOFTWARE.
-
-import nir_algebraic
-
-# Prior to Kaby Lake, The SIN and COS instructions on Intel hardware can
-# produce values slightly outside of the [-1.0, 1.0] range for a small set of
-# values.  Obviously, this can break everyone's expectations about trig
-# functions.  This appears to be fixed in Kaby Lake.
-#
-# According to an internal presentation, the COS instruction can produce
-# a value up to 1.000027 for inputs in the range (0.08296, 0.09888).  One
-# suggested workaround is to multiply by 0.99997, scaling down the
-# amplitude slightly.  Apparently this also minimizes the error function,
-# reducing the maximum error from 0.00006 to about 0.00003.
-
-trig_workarounds = [
-   (('fsin', 'x'), ('fmul', ('fsin', 'x'), 0.99997)),
-   (('fcos', 'x'), ('fmul', ('fcos', 'x'), 0.99997)),
-]
-
-print '#include "brw_nir.h"'
-print nir_algebraic.AlgebraicPass("brw_nir_apply_trig_workarounds",
-                                  trig_workarounds).render()