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aco/ra: use live_in_demand in should_compact_linear_vgprs()

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29962>
This commit is contained in:
Daniel Schürmann 2024-06-28 10:22:47 +02:00 • committed by Marge Bot
parent 4e2a0a5ad0
commit dc851c0aa6
1 changed files with 2 additions and 7 deletions
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9
src/amd/compiler/aco_register_allocation.cpp
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@ -1704,13 +1704,8 @@ should_compact_linear_vgprs(ra_ctx& ctx, const RegisterFile& reg_file)
max_vgpr_usage =
MAX2(max_vgpr_usage, (unsigned)ctx.program->blocks[next_toplevel].register_demand.vgpr);
}
std::vector<aco_ptr<Instruction>>& instructions =
ctx.program->blocks[next_toplevel].instructions;
if (!instructions.empty() && is_phi(instructions[0])) {
max_vgpr_usage =
MAX2(max_vgpr_usage, (unsigned)ctx.program->live.register_demand[next_toplevel][0].vgpr);
}
max_vgpr_usage =
MAX2(max_vgpr_usage, (unsigned)ctx.program->blocks[next_toplevel].live_in_demand.vgpr);
for (unsigned tmp : find_vars(ctx, reg_file, get_reg_bounds(ctx, RegType::vgpr, true)))
max_vgpr_usage -= ctx.assignments[tmp].rc.size();