diff options
Diffstat (limited to 'src/compiler/nir/nir.h')
| -rw-r--r-- | src/compiler/nir/nir.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h index e542e08759d..b0cff50eaf2 100644 --- a/src/compiler/nir/nir.h +++ b/src/compiler/nir/nir.h @@ -34,6 +34,7 @@ #include "util/list.h" #include "util/ralloc.h" #include "util/set.h" +#include "util/bitscan.h" #include "util/bitset.h" #include "util/macros.h" #include "compiler/nir_types.h" @@ -1248,6 +1249,18 @@ typedef enum { */ NIR_INTRINSIC_ACCESS = 16, + /** + * Alignment for offsets and addresses + * + * These two parameters, specify an alignment in terms of a multiplier and + * an offset. The offset or address parameter X of the intrinsic is + * guaranteed to satisfy the following: + * + * (X - align_offset) % align_mul == 0 + */ + NIR_INTRINSIC_ALIGN_MUL = 17, + NIR_INTRINSIC_ALIGN_OFFSET = 18, + NIR_INTRINSIC_NUM_INDEX_FLAGS, } nir_intrinsic_index_flag; @@ -1342,6 +1355,34 @@ INTRINSIC_IDX_ACCESSORS(image_dim, IMAGE_DIM, enum glsl_sampler_dim) INTRINSIC_IDX_ACCESSORS(image_array, IMAGE_ARRAY, bool) INTRINSIC_IDX_ACCESSORS(access, ACCESS, enum gl_access_qualifier) INTRINSIC_IDX_ACCESSORS(format, FORMAT, unsigned) +INTRINSIC_IDX_ACCESSORS(align_mul, ALIGN_MUL, unsigned) +INTRINSIC_IDX_ACCESSORS(align_offset, ALIGN_OFFSET, unsigned) + +static inline void +nir_intrinsic_set_align(nir_intrinsic_instr *intrin, + unsigned align_mul, unsigned align_offset) +{ + assert(util_is_power_of_two_nonzero(align_mul)); + assert(align_offset < align_mul); + nir_intrinsic_set_align_mul(intrin, align_mul); + nir_intrinsic_set_align_offset(intrin, align_offset); +} + +/** Returns a simple alignment for a load/store intrinsic offset + * + * Instead of the full mul+offset alignment scheme provided by the ALIGN_MUL + * and ALIGN_OFFSET parameters, this helper takes both into account and + * provides a single simple alignment parameter. The offset X is guaranteed + * to satisfy X % align == 0. + */ +static inline unsigned +nir_intrinsic_align(nir_intrinsic_instr *intrin) +{ + const unsigned align_mul = nir_intrinsic_align_mul(intrin); + const unsigned align_offset = nir_intrinsic_align_offset(intrin); + assert(align_offset < align_mul); + return align_offset ? 1 << (ffs(align_offset) - 1) : align_mul; +} /** * \group texture information |