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pan/midgard: Simplify mir_bytemask_of_read_components 

There are easy ways to iterate sources!

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
Alyssa Rosenzweig 2019-10-17 22:18:36 -04:00
parent e9202ff3cb
commit 43fd730fc4
1 changed files with 4 additions and 18 deletions
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22
src/panfrost/midgard/mir.c
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@ -548,29 +548,15 @@ mir_bytemask_of_read_components_single(unsigned swizzle, unsigned inmask, midgar
return mir_to_bytemask(mode, cmask);
}
static unsigned
mir_source_count(midgard_instruction *ins)
{
if (ins->type == TAG_ALU_4) {
/* 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);
} else if (ins->type == TAG_TEXTURE_4) {
/* Coords, bias.. TODO: Offsets? */
return 2;
} else {
unreachable("Invalid instruction type");
}
}
uint16_t
mir_bytemask_of_read_components(midgard_instruction *ins, unsigned node)
{
uint16_t mask = 0;
for (unsigned i = 0; i < mir_source_count(ins); ++i) {
if (node == ~0)
return 0;
mir_foreach_src(ins, i) {
if (ins->src[i] != node) continue;
/* Branch writeout uses all components */