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Merge branch 'nir-search-helper-nnan-ninf' into 'main'

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nir/search_helpers: assume float sources without preserve flag can't be inf/nan

See merge request mesa/mesa!40291
This commit is contained in:
Georg Lehmann 2026-03-11 07:14:23 +01:00
commit 26aaa30cc9
1 changed files with 16 additions and 2 deletions
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18
src/compiler/nir/nir_search_helpers.h
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@ -853,14 +853,28 @@ xz_components_unused(const nir_alu_instr *instr)
return (nir_def_components_read(&instr->def) & 0x5) == 0;
}
#define RELATION(r, exclude) \
#define RELATION(r, _exclude) \
static inline bool \
is_##r(const nir_search_state *state, const nir_alu_instr *instr, \
unsigned src, UNUSED unsigned num_components, \
UNUSED const uint8_t *swizzle) \
{ \
fp_class_mask exclude = _exclude; \
if (exclude & (FP_CLASS_ANY_INF | FP_CLASS_NAN)) { \
/* fp_math_ctrl lets us assume inputs are not NaN/Inf for float sources. */ \
const nir_op_info *op_info = &nir_op_infos[(int)instr->op]; \
nir_alu_type base_type = nir_alu_type_get_base_type(op_info->input_types[src]); \
if (base_type == nir_type_float) { \
if (!nir_alu_instr_is_inf_preserve(instr)) \
exclude &= ~FP_CLASS_ANY_INF; \
if (!nir_alu_instr_is_nan_preserve(instr)) \
exclude &= ~FP_CLASS_NAN; \
if (!exclude) \
return true; \
} \
} \
const fp_class_mask fp_class = nir_analyze_fp_class(state->range_ht, instr->src[src].src.ssa); \
return (fp_class & (exclude)) == 0; \
return (fp_class & exclude) == 0; \
}
#define RELATION_AND_NUM(r, exclude) \