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nir: Generalize nir_intrinsic_vote_eq

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The SPIR-V extension wants us to be able to do an AllEqual on any vector
or scalar type.  This has two implications:

 1) We need to be able to handle vectors so we switch the vote_eq
    intrinsics to be vectorized intrinsics.

 2) We need to handle floats which have different behavior with respect
    to +-0, NaN, etc. than the integer variant so we need two variants.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
This commit is contained in:
Jason Ekstrand
2017-08-28 17:33:33 -07:00
parent 9812fce60b
commit 44681e4795
6 changed files with 11 additions and 7 deletions
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5
src/compiler/glsl/glsl_to_nir.cpp
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@@ -814,7 +814,7 @@ nir_visitor::visit(ir_call *ir)
op = nir_intrinsic_vote_all;
break;
case ir_intrinsic_vote_eq:
op = nir_intrinsic_vote_eq;
op = nir_intrinsic_vote_ieq;
break;
case ir_intrinsic_ballot:
op = nir_intrinsic_ballot;
@@ -1163,8 +1163,9 @@ nir_visitor::visit(ir_call *ir)
}
case nir_intrinsic_vote_any:
case nir_intrinsic_vote_all:
case nir_intrinsic_vote_eq: {
case nir_intrinsic_vote_ieq: {
nir_ssa_dest_init(&instr->instr, &instr->dest, 1, 32, NULL);
instr->num_components = 1;
ir_rvalue *value = (ir_rvalue *) ir->actual_parameters.get_head();
instr->src[0] = nir_src_for_ssa(evaluate_rvalue(value));