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pan/mdg: Avoid division in printing helpers

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Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5154>
This commit is contained in:
Alyssa Rosenzweig 2020-05-21 18:09:53 -04:00
parent 4f5b3802dc
commit 2b9f6d30f8
3 changed files with 16 additions and 4 deletions
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1
src/panfrost/midgard/compiler.h
View file

@ -498,6 +498,7 @@ uint16_t mir_bytemask(midgard_instruction *ins);
uint16_t mir_round_bytemask_up(uint16_t mask, unsigned bits);
void mir_set_bytemask(midgard_instruction *ins, uint16_t bytemask);
signed mir_upper_override(midgard_instruction *ins, unsigned inst_size);
unsigned mir_components_for_type(nir_alu_type T);
/* MIR printing */

6
src/panfrost/midgard/midgard_print.c
View file

@ -73,8 +73,7 @@ mir_print_mask(unsigned mask)
static void
mir_print_swizzle(unsigned *swizzle, nir_alu_type T)
{
unsigned sz = nir_alu_type_get_type_size(T);
unsigned comps = 128 / sz;
unsigned comps = mir_components_for_type(T);
printf(".");
@ -230,7 +229,6 @@ mir_print_constant_component(FILE *fp, const midgard_constants *consts, unsigned
static void
mir_print_embedded_constant(midgard_instruction *ins, unsigned src_idx)
{
unsigned type_size = nir_alu_type_get_type_size(ins->dest_type);
midgard_vector_alu_src src;
assert(src_idx <= 1);
@ -242,7 +240,7 @@ mir_print_embedded_constant(midgard_instruction *ins, unsigned src_idx)
unsigned *swizzle = ins->swizzle[src_idx];
unsigned comp_mask = effective_writemask(&ins->alu, ins->mask);
unsigned num_comp = util_bitcount(comp_mask);
unsigned max_comp = 64 / type_size;
unsigned max_comp = mir_components_for_type(ins->dest_type) >> 1;
bool first = true;
printf("#");

13
src/panfrost/midgard/mir.c
View file

@ -145,6 +145,19 @@ mir_nontrivial_outmod(midgard_instruction *ins)
return mod != midgard_outmod_none;
}
/* 128 / sz = exp2(log2(128 / sz))
* = exp2(log2(128) - log2(sz))
* = exp2(7 - log2(sz))
* = 1 << (7 - log2(sz))
*/
unsigned
mir_components_for_type(nir_alu_type T)
{
unsigned sz = nir_alu_type_get_type_size(T);
return 1 << (7 - util_logbase2(sz));
}
uint16_t
mir_from_bytemask(uint16_t bytemask, unsigned bits)
{