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nir/opt_algebraic: Drop bit-size suffixes from conversions

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Suffixes are dropped from a bunch of conversion opcodes when it makes
sense to do so.  Others are kept if we really do want the bit-size
restriction.

Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
This commit is contained in:
Jason Ekstrand
2018-11-07 17:32:32 -06:00
parent ff8e3d3b7b
commit 2715080d65
1 changed files with 29 additions and 29 deletions
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58
src/compiler/nir/nir_opt_algebraic.py
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@@ -82,7 +82,7 @@ optimizations = [
(('ineg', ('ineg', a)), a),
(('fabs', ('fabs', a)), ('fabs', a)),
(('fabs', ('fneg', a)), ('fabs', a)),
(('fabs', ('u2f32', a)), ('u2f32', a)),
(('fabs', ('u2f', a)), ('u2f', a)),
(('iabs', ('iabs', a)), ('iabs', a)),
(('iabs', ('ineg', a)), ('iabs', a)),
(('~fadd', a, 0.0), a),
@@ -242,18 +242,18 @@ optimizations = [
(('ieq', ('b2i', a), 0), ('inot', a)),
(('ine', ('b2i', a), 0), a),
(('fne', ('u2f32', a), 0.0), ('ine', a, 0)),
(('feq', ('u2f32', a), 0.0), ('ieq', a, 0)),
(('fge', ('u2f32', a), 0.0), True),
(('fge', 0.0, ('u2f32', a)), ('uge', 0, a)), # ieq instead?
(('flt', ('u2f32', a), 0.0), False),
(('flt', 0.0, ('u2f32', a)), ('ult', 0, a)), # ine instead?
(('fne', ('i2f32', a), 0.0), ('ine', a, 0)),
(('feq', ('i2f32', a), 0.0), ('ieq', a, 0)),
(('fge', ('i2f32', a), 0.0), ('ige', a, 0)),
(('fge', 0.0, ('i2f32', a)), ('ige', 0, a)),
(('flt', ('i2f32', a), 0.0), ('ilt', a, 0)),
(('flt', 0.0, ('i2f32', a)), ('ilt', 0, a)),
(('fne', ('u2f', a), 0.0), ('ine', a, 0)),
(('feq', ('u2f', a), 0.0), ('ieq', a, 0)),
(('fge', ('u2f', a), 0.0), True),
(('fge', 0.0, ('u2f', a)), ('uge', 0, a)), # ieq instead?
(('flt', ('u2f', a), 0.0), False),
(('flt', 0.0, ('u2f', a)), ('ult', 0, a)), # ine instead?
(('fne', ('i2f', a), 0.0), ('ine', a, 0)),
(('feq', ('i2f', a), 0.0), ('ieq', a, 0)),
(('fge', ('i2f', a), 0.0), ('ige', a, 0)),
(('fge', 0.0, ('i2f', a)), ('ige', 0, a)),
(('flt', ('i2f', a), 0.0), ('ilt', a, 0)),
(('flt', 0.0, ('i2f', a)), ('ilt', 0, a)),
# 0.0 < fabs(a)
# fabs(a) > 0.0
@@ -534,8 +534,8 @@ optimizations = [
# Conversions
(('i2b', ('b2i', a)), a),
(('i2b', 'a@bool'), a),
(('f2i32', ('ftrunc', a)), ('f2i32', a)),
(('f2u32', ('ftrunc', a)), ('f2u32', a)),
(('f2i', ('ftrunc', a)), ('f2i', a)),
(('f2u', ('ftrunc', a)), ('f2u', a)),
(('i2b', ('ineg', a)), ('i2b', a)),
(('i2b', ('iabs', a)), ('i2b', a)),
(('fabs', ('b2f', a)), ('b2f', a)),
@@ -545,10 +545,10 @@ optimizations = [
# Ironically, mark these as imprecise because removing the conversions may
# preserve more precision than doing the conversions (e.g.,
# uint(float(0x81818181u)) == 0x81818200).
(('~f2i32', ('i2f32', 'a@32')), a),
(('~f2i32', ('u2f32', 'a@32')), a),
(('~f2u32', ('i2f32', 'a@32')), a),
(('~f2u32', ('u2f32', 'a@32')), a),
(('~f2i32', ('i2f', 'a@32')), a),
(('~f2i32', ('u2f', 'a@32')), a),
(('~f2u32', ('i2f', 'a@32')), a),
(('~f2u32', ('u2f', 'a@32')), a),
# Packing and then unpacking does nothing
(('unpack_64_2x32_split_x', ('pack_64_2x32_split', a, b)), a),
@@ -718,29 +718,29 @@ optimizations = [
(('unpack_unorm_2x16', 'v'),
('fdiv', ('u2f32', ('vec2', ('extract_u16', 'v', 0),
('extract_u16', 'v', 1))),
('extract_u16', 'v', 1))),
65535.0),
'options->lower_unpack_unorm_2x16'),
(('unpack_unorm_4x8', 'v'),
('fdiv', ('u2f32', ('vec4', ('extract_u8', 'v', 0),
('extract_u8', 'v', 1),
('extract_u8', 'v', 2),
('extract_u8', 'v', 3))),
('extract_u8', 'v', 1),
('extract_u8', 'v', 2),
('extract_u8', 'v', 3))),
255.0),
'options->lower_unpack_unorm_4x8'),
(('unpack_snorm_2x16', 'v'),
('fmin', 1.0, ('fmax', -1.0, ('fdiv', ('i2f32', ('vec2', ('extract_i16', 'v', 0),
('extract_i16', 'v', 1))),
('fmin', 1.0, ('fmax', -1.0, ('fdiv', ('i2f', ('vec2', ('extract_i16', 'v', 0),
('extract_i16', 'v', 1))),
32767.0))),
'options->lower_unpack_snorm_2x16'),
(('unpack_snorm_4x8', 'v'),
('fmin', 1.0, ('fmax', -1.0, ('fdiv', ('i2f32', ('vec4', ('extract_i8', 'v', 0),
('extract_i8', 'v', 1),
('extract_i8', 'v', 2),
('extract_i8', 'v', 3))),
('fmin', 1.0, ('fmax', -1.0, ('fdiv', ('i2f', ('vec4', ('extract_i8', 'v', 0),
('extract_i8', 'v', 1),
('extract_i8', 'v', 2),
('extract_i8', 'v', 3))),
127.0))),
'options->lower_unpack_snorm_4x8'),
]