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i965/vec4: Emit BRW_AOP_INC or BRW_AOP_DEC for atomicAdd of +1 or -1

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No shader-db changes on any Intel platform.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
This commit is contained in:
Ian Romanick 2018-08-24 17:24:36 -07:00
parent c856403868
commit c836326a29
1 changed files with 16 additions and 3 deletions
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19
src/intel/compiler/brw_vec4_nir.cpp
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@ -709,9 +709,20 @@ vec4_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
break;
}
case nir_intrinsic_ssbo_atomic_add:
nir_emit_ssbo_atomic(BRW_AOP_ADD, instr);
case nir_intrinsic_ssbo_atomic_add: {
int op = BRW_AOP_ADD;
const nir_const_value *const val = nir_src_as_const_value(instr->src[2]);
if (val != NULL) {
if (val->i32[0] == 1)
op = BRW_AOP_INC;
else if (val->i32[0] == -1)
op = BRW_AOP_DEC;
}
nir_emit_ssbo_atomic(op, instr);
break;
}
case nir_intrinsic_ssbo_atomic_imin:
nir_emit_ssbo_atomic(BRW_AOP_IMIN, instr);
break;
@ -937,7 +948,9 @@ vec4_visitor::nir_emit_ssbo_atomic(int op, nir_intrinsic_instr *instr)
}
src_reg offset = get_nir_src(instr->src[1], 1);
src_reg data1 = get_nir_src(instr->src[2], 1);
src_reg data1;
if (op != BRW_AOP_INC && op != BRW_AOP_DEC && op != BRW_AOP_PREDEC)
data1 = get_nir_src(instr->src[2], 1);
src_reg data2;
if (op == BRW_AOP_CMPWR)
data2 = get_nir_src(instr->src[3], 1);