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intel/compiler: Request bitfield_reverse lowering on pre-Gen7 hardware

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See the previous commit for the explanation of the Fixes tag.

Hurts 21 shaders in shader-db.  All of the hurt shaders are in Unreal
Engine 4 tech demos.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Fixes: 7afa26d4e3 ("nir: Add lowering for nir_op_bitfield_reverse.")
(cherry picked from commit b418269d7d)
This commit is contained in:
Ian Romanick 2019-08-26 13:33:06 -07:00 • committed by Dylan Baker
parent 91fa24a686
commit 753ea83477
1 changed files with 1 additions and 0 deletions
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src/intel/compiler/brw_compiler.c
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@ -187,6 +187,7 @@ brw_compiler_create(void *mem_ctx, const struct gen_device_info *devinfo)
nir_options->lower_flrp32 = devinfo->gen < 6 || devinfo->gen >= 11;
nir_options->lower_rotate = devinfo->gen < 11;
nir_options->lower_bitfield_reverse = devinfo->gen < 7;
nir_options->lower_int64_options = int64_options;
nir_options->lower_doubles_options = fp64_options;