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aco: compute live-in variables in addition to live-out variables

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30120>
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Daniel Schürmann 2024-07-08 18:45:11 +02:00 • committed by Marge Bot
parent 9a4a03ec1f
commit 29262f8cf3
2 changed files with 9 additions and 0 deletions
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2
src/amd/compiler/aco_ir.h
View file

@ -2066,6 +2066,8 @@ public:
monotonic_buffer_resource memory;
/* live temps out per block */
std::vector<IDSet> live_out;
/* live-in temps per block */
std::vector<IDSet> live_in;
} live;
struct {

7
src/amd/compiler/aco_live_var_analysis.cpp
View file

@ -246,6 +246,11 @@ process_live_temps_per_block(live_ctx& ctx, Block* block)
}
}
if (ctx.program->live.live_in[block->index].insert(live)) {
if (block->linear_preds.size())
ctx.worklist = std::max<int>(ctx.worklist, block->linear_preds.back());
}
block->live_in_demand = new_demand;
block->live_in_demand.sgpr += 2; /* Add 2 SGPRs for potential long-jumps. */
block->register_demand.update(block->live_in_demand);
@ -417,8 +422,10 @@ void
live_var_analysis(Program* program)
{
program->live.live_out.clear();
program->live.live_in.clear();
program->live.memory.release();
program->live.live_out.resize(program->blocks.size(), IDSet(program->live.memory));
program->live.live_in.resize(program->blocks.size(), IDSet(program->live.memory));
program->max_reg_demand = RegisterDemand();
program->needs_vcc = program->gfx_level >= GFX10;