diff options
author | Matt Turner <[email protected]> | 2016-11-29 17:33:30 -0800 |
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committer | Matt Turner <[email protected]> | 2016-12-12 12:39:27 -0800 |
commit | ac6646129f71b83e8e4d737db5ef82d9c9ea516b (patch) | |
tree | b000acae1d125720bea1f5b24643bee57256f026 /src/compiler/nir/nir_search_helpers.h | |
parent | 7bed52bb5fb4cfd5f91c902a654b3452f921da17 (diff) |
nir: Move fsat outside of fmin/fmax if second arg is 0 to 1.
instructions in affected programs: 550 -> 544 (-1.09%)
helped: 6
cycles in affected programs: 6952 -> 6850 (-1.47%)
helped: 6
Reviewed-by: Jason Ekstrand <[email protected]>
Diffstat (limited to 'src/compiler/nir/nir_search_helpers.h')
-rw-r--r-- | src/compiler/nir/nir_search_helpers.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_search_helpers.h b/src/compiler/nir/nir_search_helpers.h index 50379441265..20fdae66e2c 100644 --- a/src/compiler/nir/nir_search_helpers.h +++ b/src/compiler/nir/nir_search_helpers.h @@ -91,4 +91,27 @@ is_neg_power_of_two(nir_alu_instr *instr, unsigned src, unsigned num_components, return true; } +static inline bool +is_zero_to_one(nir_alu_instr *instr, unsigned src, unsigned num_components, + const uint8_t *swizzle) +{ + nir_const_value *val = nir_src_as_const_value(instr->src[src].src); + + if (!val) + return false; + + for (unsigned i = 0; i < num_components; i++) { + switch (nir_op_infos[instr->op].input_types[src]) { + case nir_type_float: + if (val->f32[swizzle[i]] < 0.0f || val->f32[swizzle[i]] > 1.0f) + return false; + break; + default: + return false; + } + } + + return true; +} + #endif /* _NIR_SEARCH_ */ |