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amd: Use inverse ballot intrinsic if available

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25123>
This commit is contained in:
Connor Abbott
2019-02-01 12:36:56 +01:00
committed by Marge Bot
parent 4282386311
commit c93bcb32fe
3 changed files with 30 additions and 1 deletions
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src/amd/compiler/aco_instruction_selection.cpp
+14
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@@ -8306,6 +8306,20 @@ visit_intrinsic(isel_context* ctx, nir_intrinsic_instr* instr)
set_wqm(ctx);
break;
}
case nir_intrinsic_inverse_ballot: {
Temp src = bld.as_uniform(get_ssa_temp(ctx, instr->src[0].ssa));
Temp dst = get_ssa_temp(ctx, &instr->def);
assert(dst.size() == bld.lm.size());
if (src.size() > dst.size()) {
emit_extract_vector(ctx, src, 0, dst);
} else if (src.size() < dst.size()) {
bld.pseudo(aco_opcode::p_create_vector, Definition(dst), src, Operand::zero());
} else {
bld.copy(Definition(dst), src);
}
break;
}
case nir_intrinsic_shuffle:
case nir_intrinsic_read_invocation: {
Temp src = get_ssa_temp(ctx, instr->src[0].ssa);