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pan/bi: Handle vectorized load_const 

In preparation for 16-bit vectors.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5307>
This commit is contained in:
Alyssa Rosenzweig 2020-06-02 19:30:56 -04:00 committed by Marge Bot
parent 1b09c6993d
commit 0e73d879e3
1 changed files with 13 additions and 4 deletions
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17
src/panfrost/bifrost/bifrost_compile.c
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@ -466,20 +466,29 @@ static void
emit_load_const(bi_context *ctx, nir_load_const_instr *instr)
{
/* Make sure we've been lowered */
assert(instr->def.num_components == 1);
assert(instr->def.num_components <= (32 / instr->def.bit_size));
/* Accumulate all the channels of the constant, as if we did an
* implicit SEL over them */
uint32_t acc = 0;
for (unsigned i = 0; i < instr->def.num_components; ++i) {
unsigned v = nir_const_value_as_uint(instr->value[i], instr->def.bit_size);
acc |= (v << (i * instr->def.bit_size));
}
bi_instruction move = {
.type = BI_MOV,
.dest = pan_ssa_index(&instr->def),
.dest_type = instr->def.bit_size | nir_type_uint,
.dest_type = nir_type_uint32,
.src = {
BIR_INDEX_CONSTANT
},
.src_types = {
instr->def.bit_size | nir_type_uint,
nir_type_uint32,
},
.constant = {
.u64 = nir_const_value_as_uint(instr->value[0], instr->def.bit_size)
.u32 = acc
}
};