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glsl/opt_algebraic: Drop the eq/neq add-removal optimization.

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No change on freedreno or r300 shader-db.

Acked-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21475>
This commit is contained in:
Emma Anholt
2023-02-22 12:27:07 -08:00
committed by Marge Bot
parent d352bd9737
commit d589760f44
1 changed files with 0 additions and 33 deletions
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33
src/compiler/glsl/opt_algebraic.cpp
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@@ -449,39 +449,6 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
}
break;
case ir_binop_equal:
case ir_binop_nequal:
for (int add_pos = 0; add_pos < 2; add_pos++) {
ir_expression *add = op_expr[add_pos];
if (!add || add->operation != ir_binop_add)
continue;
ir_constant *zero = op_const[1 - add_pos];
if (!is_vec_zero(zero))
continue;
/* We are allowed to add scalars with a vector or matrix. In that
* case lets just exit early.
*/
if (add->operands[0]->type != add->operands[1]->type)
continue;
/* Depending of the zero position we want to optimize
* (0 cmp x+y) into (-x cmp y) or (x+y cmp 0) into (x cmp -y)
*/
if (add_pos == 1) {
return new(mem_ctx) ir_expression(ir->operation,
neg(add->operands[0]),
add->operands[1]);
} else {
return new(mem_ctx) ir_expression(ir->operation,
add->operands[0],
neg(add->operands[1]));
}
}
break;
case ir_binop_min:
case ir_binop_max:
if (!ir->type->is_float())