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aco: use s_and_b64 exec to reduce uniform booleans to one bit 

Reviewed-By: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
This commit is contained in:
Daniel Schürmann 2019-11-12 11:40:28 +01:00 committed by Timur Kristóf
parent 94e355148f
commit a1622c1a11
1 changed files with 3 additions and 1 deletions
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4
src/amd/compiler/aco_instruction_selection.cpp
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@ -354,7 +354,9 @@ Temp as_uniform_bool(isel_context *ctx, Temp val)
assert(val.regClass() == s2);
Builder bld(ctx->program, ctx->block);
/* if we're currently in WQM mode, ensure that the source is also computed in WQM */
return bld.sopc(aco_opcode::s_cmp_lg_u64, bld.def(s1, scc), Operand(0u), emit_wqm(ctx, val));
Temp tmp = bld.tmp(s1);
bld.sop2(aco_opcode::s_and_b64, bld.def(s2), bld.scc(Definition(tmp)), val, Operand(exec, s2)).def(1).getTemp();
return emit_wqm(ctx, tmp);
}
}