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nir: add nir_instr_rewrite_deref 

Allows modifying a texture instruction's texture and sampler derefs.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Nicolai Hähnle 2017-06-09 15:13:08 +02:00
parent 540b1a8f0b
commit b27c2d402e
2 changed files with 15 additions and 0 deletions
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13
src/compiler/nir/nir.c
View File

@ -1509,6 +1509,19 @@ nir_instr_rewrite_dest(nir_instr *instr, nir_dest *dest, nir_dest new_dest)
src_add_all_uses(dest->reg.indirect, instr, NULL);
}
void
nir_instr_rewrite_deref(nir_instr *instr, nir_deref_var **deref,
nir_deref_var *new_deref)
{
if (*deref)
visit_deref_src(*deref, remove_use_cb, NULL);
*deref = new_deref;
if (*deref)
visit_deref_src(*deref, add_use_cb, instr);
}
/* note: does *not* take ownership of 'name' */
void
nir_ssa_def_init(nir_instr *instr, nir_ssa_def *def,

2
src/compiler/nir/nir.h
View File

@ -2211,6 +2211,8 @@ void nir_instr_move_src(nir_instr *dest_instr, nir_src *dest, nir_src *src);
void nir_if_rewrite_condition(nir_if *if_stmt, nir_src new_src);
void nir_instr_rewrite_dest(nir_instr *instr, nir_dest *dest,
nir_dest new_dest);
void nir_instr_rewrite_deref(nir_instr *instr, nir_deref_var **deref,
nir_deref_var *new_deref);
void nir_ssa_dest_init(nir_instr *instr, nir_dest *dest,
unsigned num_components, unsigned bit_size,