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pan/bi: Add bi_index data structure 

Rather than open-coding indices with manual bit packing flying around,
let's add a data structure corresponding to a reference to some data.
(Think nir_src, ibc_ref, etc). In particular this allows us to pack in
more metadata, like an offset, for properly supporting limited vectors
(for I/O) without bloating the IR with swizzle fields.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8215>
This commit is contained in:
Alyssa Rosenzweig 2020-12-11 19:57:39 -05:00
parent f9cd6f0500
commit 99152b6045
1 changed files with 24 additions and 0 deletions
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24
src/panfrost/bifrost/compiler.h
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@ -391,6 +391,30 @@ enum bi_swizzle {
BI_SWIZZLE_B0022 = 12, /* for b02 lanes */
};
enum bi_index_type {
BI_INDEX_NULL = 0,
BI_INDEX_NORMAL = 1,
BI_INDEX_REGISTER = 2,
BI_INDEX_CONSTANT = 3,
BI_INDEX_PASS = 4,
BI_INDEX_FAU = 5
};
typedef struct {
uint32_t value;
/* modifiers, should only be set if applicable for a given instruction.
* For *IDP.v4i8, abs plays the role of sign. For bitwise ops where
* applicable, neg plays the role of not */
bool abs : 1;
bool neg : 1;
enum bi_swizzle swizzle : 4;
uint32_t offset : 2;
bool reg : 1;
enum bi_index_type type : 3;
} bi_index;
/* Represents the assignment of slots for a given bi_bundle */
typedef struct {