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glsl: make fp (not) equal always nan/inf preserving

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Outside of isnan/isinf this shouldn't be needed, but at this point
they were already lowered.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39641>
This commit is contained in:
Georg Lehmann 2026-02-02 15:32:40 +01:00 • committed by Marge Bot
parent c5bf979d71
commit ef5e58e513
1 changed files with 10 additions and 4 deletions
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14
src/compiler/glsl/glsl_to_nir.cpp
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@ -2471,19 +2471,24 @@ nir_visitor::visit(ir_expression *ir)
result = nir_uge(&b, srcs[0], srcs[1]);
break;
case ir_binop_equal:
if (type_is_float(types[0]))
if (type_is_float(types[0])) {
b.fp_math_ctrl |= nir_fp_preserve_nan | nir_fp_preserve_inf;
result = nir_feq(&b, srcs[0], srcs[1]);
else
} else {
result = nir_ieq(&b, srcs[0], srcs[1]);
}
break;
case ir_binop_nequal:
if (type_is_float(types[0]))
if (type_is_float(types[0])) {
b.fp_math_ctrl |= nir_fp_preserve_nan | nir_fp_preserve_inf;
result = nir_fneu(&b, srcs[0], srcs[1]);
else
} else {
result = nir_ine(&b, srcs[0], srcs[1]);
}
break;
case ir_binop_all_equal:
if (type_is_float(types[0])) {
b.fp_math_ctrl |= nir_fp_preserve_nan | nir_fp_preserve_inf;
switch (ir->operands[0]->type->vector_elements) {
case 1: result = nir_feq(&b, srcs[0], srcs[1]); break;
case 2: result = nir_ball_fequal2(&b, srcs[0], srcs[1]); break;
@ -2505,6 +2510,7 @@ nir_visitor::visit(ir_expression *ir)
break;
case ir_binop_any_nequal:
if (type_is_float(types[0])) {
b.fp_math_ctrl |= nir_fp_preserve_nan | nir_fp_preserve_inf;
switch (ir->operands[0]->type->vector_elements) {
case 1: result = nir_fneu(&b, srcs[0], srcs[1]); break;
case 2: result = nir_bany_fnequal2(&b, srcs[0], srcs[1]); break;