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freedreno/ir3: avoid extra mov's for "arrays"

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Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2018-01-19 15:45:37 -05:00
parent 2bc3fb6992
commit ac459a6f7f
1 changed files with 23 additions and 3 deletions
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26
src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c
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@ -348,7 +348,7 @@ create_array_load(struct ir3_context *ctx, struct ir3_array *arr, int n,
}
/* relative (indirect) if address!=NULL */
static struct ir3_instruction *
static void
create_array_store(struct ir3_context *ctx, struct ir3_array *arr, int n,
struct ir3_instruction *src, struct ir3_instruction *address)
{
@ -356,6 +356,28 @@ create_array_store(struct ir3_context *ctx, struct ir3_array *arr, int n,
struct ir3_instruction *mov;
struct ir3_register *dst;
/* if not relative store, don't create an extra mov, since that
* ends up being difficult for cp to remove.
*/
if (!address) {
dst = src->regs[0];
src->barrier_class |= IR3_BARRIER_ARRAY_W;
src->barrier_conflict |= IR3_BARRIER_ARRAY_R | IR3_BARRIER_ARRAY_W;
dst->flags |= IR3_REG_ARRAY;
dst->instr = arr->last_write;
dst->size = arr->length;
dst->array.id = arr->id;
dst->array.offset = n;
arr->last_write = src;
array_insert(block, block->keeps, src);
return;
}
mov = ir3_instr_create(block, OPC_MOV);
mov->cat1.src_type = TYPE_U32;
mov->cat1.dst_type = TYPE_U32;
@ -379,8 +401,6 @@ create_array_store(struct ir3_context *ctx, struct ir3_array *arr, int n,
* pass won't know this.. so keep all array stores:
*/
array_insert(block, block->keeps, mov);
return mov;
}
/* allocate a n element value array (to be populated by caller) and