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pan/midgard: Improve mir_mask_of_read_components

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Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
Alyssa Rosenzweig 2019-08-30 10:45:57 -07:00
parent 5377d70292
commit bcc59ff04d
1 changed files with 15 additions and 2 deletions
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17
src/panfrost/midgard/mir.c
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@ -376,8 +376,8 @@ static unsigned
mir_source_count(midgard_instruction *ins)
{
if (ins->type == TAG_ALU_4) {
/* ALU is always binary */
return 2;
/* ALU is always binary, except csel */
return OP_IS_CSEL(ins->alu.op) ? 3 : 2;
} else if (ins->type == TAG_LOAD_STORE_4) {
bool load = !OP_IS_STORE(ins->load_store.op);
return (load ? 2 : 3);
@ -417,6 +417,10 @@ mir_mask_of_read_components(midgard_instruction *ins, unsigned node)
for (unsigned i = 0; i < mir_source_count(ins); ++i) {
if (ins->src[i] != node) continue;
/* Branch writeout uses all components */
if (ins->compact_branch && ins->writeout && (i == 0))
return 0xF;
unsigned swizzle = mir_get_swizzle(ins, i);
unsigned m = mir_mask_of_read_components_single(swizzle, ins->mask);
@ -433,6 +437,15 @@ mir_mask_of_read_components(midgard_instruction *ins, unsigned node)
m |= (m << 1);
}
/* Handle dot products and things */
if (ins->type == TAG_ALU_4 && !ins->compact_branch) {
unsigned channel_override =
GET_CHANNEL_COUNT(alu_opcode_props[ins->alu.op].props);
if (channel_override)
m = mask_of(channel_override);
}
mask |= m;
}