diff options
| author | Jason Ekstrand <[email protected]> | 2019-03-11 18:58:24 -0500 |
|---|---|---|
| committer | Jason Ekstrand <[email protected]> | 2019-03-15 23:10:26 -0500 |
| commit | fe9a6c0f14aa3ca6dfb1c7480871c95838b5cf14 (patch) | |
| tree | 5cbbefe919ad7886b7df6abe739f592d82b9a32a /src/compiler/spirv/spirv_to_nir.c | |
| parent | 9bb63e9a7c57f164a9d453ba33347d803e453144 (diff) | |
nir/builder: Add a vector extract helper
This one's a tiny bit better than what we had in spirv_to_nir because it
emits a binary tree rather than a linear walk. It also doesn't leave
around unneeded bcsel instructions for a constant index and returns an
undef for constant OOB access.
Reviewed-by: Caio Marcelo de Oliveira Filho <[email protected]>
Diffstat (limited to 'src/compiler/spirv/spirv_to_nir.c')
| -rw-r--r-- | src/compiler/spirv/spirv_to_nir.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/src/compiler/spirv/spirv_to_nir.c b/src/compiler/spirv/spirv_to_nir.c index da0f2dcd805..3b7f8d8a9ac 100644 --- a/src/compiler/spirv/spirv_to_nir.c +++ b/src/compiler/spirv/spirv_to_nir.c @@ -3047,12 +3047,7 @@ nir_ssa_def * vtn_vector_extract_dynamic(struct vtn_builder *b, nir_ssa_def *src, nir_ssa_def *index) { - nir_ssa_def *dest = vtn_vector_extract(b, src, 0); - for (unsigned i = 1; i < src->num_components; i++) - dest = nir_bcsel(&b->nb, nir_ieq_imm(&b->nb, index, i), - vtn_vector_extract(b, src, i), dest); - - return dest; + return nir_vector_extract(&b->nb, src, nir_i2i(&b->nb, index, 32)); } nir_ssa_def * |