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nir/builder: Add a helper for storing to variable derefs

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Reviewed-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Jason Ekstrand 2016-03-25 10:35:03 -07:00
parent 77e2ac1da7
commit 6a2479d618
1 changed files with 16 additions and 0 deletions
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16
src/compiler/nir/nir_builder.h
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@ -398,6 +398,22 @@ nir_store_var(nir_builder *build, nir_variable *var, nir_ssa_def *value,
nir_builder_instr_insert(build, &store->instr);
}
static inline void
nir_store_deref_var(nir_builder *build, nir_deref_var *deref,
nir_ssa_def *value, unsigned writemask)
{
const unsigned num_components =
glsl_get_vector_elements(nir_deref_tail(&deref->deref)->type);
nir_intrinsic_instr *store =
nir_intrinsic_instr_create(build->shader, nir_intrinsic_store_var);
store->num_components = num_components;
store->const_index[0] = writemask & ((1 << num_components) - 1);
store->variables[0] = nir_deref_as_var(nir_copy_deref(store, &deref->deref));
store->src[0] = nir_src_for_ssa(value);
nir_builder_instr_insert(build, &store->instr);
}
static inline void
nir_copy_deref_var(nir_builder *build, nir_deref_var *dest, nir_deref_var *src)
{