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aco/ra: consider precolor affinities in get_reg_vector()

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36851>
This commit is contained in:
Daniel Schürmann 2025-08-19 15:05:29 +02:00 • committed by Marge Bot
parent 6dbf8f7b90
commit 2f303636f3
1 changed files with 8 additions and 3 deletions
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11
src/amd/compiler/aco_register_allocation.cpp
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@ -1766,11 +1766,14 @@ get_reg_vector(ra_ctx& ctx, const RegisterFile& reg_file, Temp temp, aco_ptr<Ins
for (unsigned i = 0; i < vec.num_parts; i++) {
const Operand& op = vec.parts[i];
if (i != vec.index && op.isTemp() && op.getTemp().type() == temp.type() &&
ctx.assignments[op.tempId()].assigned) {
(ctx.assignments[op.tempId()].assigned ||
ctx.assignments[op.tempId()].precolor_affinity)) {
PhysReg reg = ctx.assignments[op.tempId()].reg;
reg.reg_b += (our_offset - their_offset);
if (get_reg_specified(ctx, reg_file, temp.regClass(), instr, reg, operand))
if (get_reg_specified(ctx, reg_file, temp.regClass(), instr, reg, operand)) {
ctx.assignments[vec.parts[vec.index].tempId()].set_precolor_affinity(reg);
return reg;
}
/* return if MIMG vaddr components don't remain vector-aligned */
if (vec.is_weak)
@ -1788,8 +1791,10 @@ get_reg_vector(ra_ctx& ctx, const RegisterFile& reg_file, Temp temp, aco_ptr<Ins
if (reg) {
reg->reg_b += our_offset;
/* make sure to only use byte offset if the instruction supports it */
if (get_reg_specified(ctx, reg_file, temp.regClass(), instr, *reg, operand))
if (get_reg_specified(ctx, reg_file, temp.regClass(), instr, *reg, operand)) {
ctx.assignments[vec.parts[vec.index].tempId()].set_precolor_affinity(reg.value());
return reg;
}
}
}
return {};