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lima/ppir: branch regalloc fixes

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The branch instruction has sources which must be handled in src handling
paths so that regalloc assigns registers to them properly.

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
This commit is contained in:
Erico Nunes 2019-07-17 01:30:55 +02:00
parent 32b72cbca5
commit 2292f0c4b5
1 changed files with 33 additions and 0 deletions
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33
src/gallium/drivers/lima/ir/pp/regalloc.c
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@ -239,6 +239,16 @@ static ppir_reg *ppir_regalloc_build_liveness_info(ppir_compiler *comp)
reg->live_out = node->instr->seq;
break;
}
case ppir_node_type_branch:
{
ppir_branch_node *branch = ppir_node_to_branch(node);
for (int i = 0; i < 2; i++) {
ppir_reg *reg = get_src_reg(branch->src + i);
if (reg && node->instr->seq > reg->live_out)
reg->live_out = node->instr->seq;
}
break;
}
default:
break;
}
@ -315,6 +325,17 @@ static void ppir_regalloc_print_result(ppir_compiler *comp)
printf("%d", ppir_target_get_src_reg_index(&load_tex->src_coords));
break;
}
case ppir_node_type_branch:
{
ppir_branch_node *branch = ppir_node_to_branch(node);
for (int j = 0; j < 2; j++) {
if (j)
printf(" ");
printf("%d", ppir_target_get_src_reg_index(branch->src + j));
}
break;
}
default:
break;
}
@ -610,6 +631,18 @@ static bool ppir_regalloc_spill_reg(ppir_compiler *comp, ppir_reg *chosen)
}
break;
}
case ppir_node_type_branch:
{
ppir_branch_node *branch = ppir_node_to_branch(node);
for (int i = 0; i < 2; i++) {
reg = get_src_reg(branch->src + i);
if (reg == chosen) {
ppir_update_spilled_src(comp, block, node,
branch->src + i, NULL);
}
}
break;
}
default:
break;
}