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nir: Add lowering from ibitfield_extract/ubitfield_extract to shifts.

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V3D doesn't have opcodes for ibfe/ubfe, so we need to lower similarly to
glsl/lower_instructions.cpp.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Eric Anholt
2018-05-02 13:02:21 -07:00
parent 74618ccbca
commit af88acf4c4
2 changed files with 19 additions and 0 deletions
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3
src/compiler/nir/nir.h
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@@ -1903,7 +1903,10 @@ typedef struct nir_shader_compiler_options {
bool lower_fsqrt;
bool lower_fmod32;
bool lower_fmod64;
/** Lowers ibitfield_extract/ubitfield_extract to ibfe/ubfe. */
bool lower_bitfield_extract;
/** Lowers ibitfield_extract/ubitfield_extract to bfm, compares, shifts. */
bool lower_bitfield_extract_to_shifts;
/** Lowers bitfield_insert to bfi/bfm */
bool lower_bitfield_insert;
/** Lowers bitfield_insert to bfm, compares, and shifts. */