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v3d: Use the ra_alloc_contig_reg_class() function to speed up RA.

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It means we don't need to do the n^2 loop over the regs to set up the pq
values, nor do we need the register conflicts lists.

Acked-by: Erico Nunes <nunes.erico@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9437>
This commit is contained in:
Eric Anholt 2021-03-04 16:52:20 -08:00 committed by Marge Bot
parent 15aa8e9189
commit ec3bc5da74
1 changed files with 5 additions and 5 deletions
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10
src/broadcom/compiler/vir_register_allocate.c
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@ -501,19 +501,19 @@ vir_init_reg_sets(struct v3d_compiler *compiler)
int max_thread_index = (compiler->devinfo->ver >= 40 ? 2 : 3);
compiler->regs = ra_alloc_reg_set(compiler, PHYS_INDEX + PHYS_COUNT,
true);
false);
if (!compiler->regs)
return false;
for (int threads = 0; threads < max_thread_index; threads++) {
compiler->reg_class_any[threads] =
ra_alloc_reg_class(compiler->regs);
ra_alloc_contig_reg_class(compiler->regs, 1);
compiler->reg_class_r5[threads] =
ra_alloc_reg_class(compiler->regs);
ra_alloc_contig_reg_class(compiler->regs, 1);
compiler->reg_class_phys_or_acc[threads] =
ra_alloc_reg_class(compiler->regs);
ra_alloc_contig_reg_class(compiler->regs, 1);
compiler->reg_class_phys[threads] =
ra_alloc_reg_class(compiler->regs);
ra_alloc_contig_reg_class(compiler->regs, 1);
for (int i = PHYS_INDEX;
i < PHYS_INDEX + (PHYS_COUNT >> threads); i++) {