OpenHarmony/third_party_mesa3d
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nir: Add support for 1-bit data types

Browse Source 
This commit adds support for 1-bit Booleans and integers.  Booleans
obviously take a value of true or false.  Because we have to define the
semantics of 1-bit signed and unsigned integers, we define uint1_t to
take values of 0 and 1 and int1_t to take values of 0 and -1.  1-bit
arithmetic is then well-defined in the usual way, just with fewer bits.
The definition of int1_t and uint1_t doesn't usually matter but we do
need something for purposes of constant folding.

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Tested-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Jason Ekstrand
2018-10-18 11:59:40 -05:00
committed by Jason Ekstrand
parent 2fe8708ffd
commit 3191a82372
11 changed files with 92 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/compiler/nir/nir.h
View File

@@ -118,6 +118,7 @@ typedef enum {
} nir_rounding_mode;
typedef union {
bool b[NIR_MAX_VEC_COMPONENTS];
float f32[NIR_MAX_VEC_COMPONENTS];
double f64[NIR_MAX_VEC_COMPONENTS];
int8_t i8[NIR_MAX_VEC_COMPONENTS];
@@ -779,17 +780,25 @@ typedef struct {
unsigned write_mask : NIR_MAX_VEC_COMPONENTS; /* ignored if dest.is_ssa is true */
} nir_alu_dest;
/** NIR sized and unsized types
*
* The values in this enum are carefully chosen so that the sized type is
* just the unsized type OR the number of bits.
*/
typedef enum {
nir_type_invalid = 0, /* Not a valid type */
nir_type_float,
nir_type_int,
nir_type_uint,
nir_type_bool,
nir_type_int = 2,
nir_type_uint = 4,
nir_type_bool = 6,
nir_type_float = 128,
nir_type_bool1 = 1 | nir_type_bool,
nir_type_bool32 = 32 | nir_type_bool,
nir_type_int1 = 1 | nir_type_int,
nir_type_int8 = 8 | nir_type_int,
nir_type_int16 = 16 | nir_type_int,
nir_type_int32 = 32 | nir_type_int,
nir_type_int64 = 64 | nir_type_int,
nir_type_uint1 = 1 | nir_type_uint,
nir_type_uint8 = 8 | nir_type_uint,
nir_type_uint16 = 16 | nir_type_uint,
nir_type_uint32 = 32 | nir_type_uint,
@@ -799,8 +808,8 @@ typedef enum {
nir_type_float64 = 64 | nir_type_float,
} nir_alu_type;
#define NIR_ALU_TYPE_SIZE_MASK 0xfffffff8
#define NIR_ALU_TYPE_BASE_TYPE_MASK 0x00000007
#define NIR_ALU_TYPE_SIZE_MASK 0x79
#define NIR_ALU_TYPE_BASE_TYPE_MASK 0x86
static inline unsigned
nir_alu_type_get_type_size(nir_alu_type type)