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softfloat: Use goto for default nan case in pick_nan_muladd

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Remove "3" as a special case for which and simply
branch to return the desired value.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20241203203949.483774-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2024-12-11 15:31:08 +00:00 • committed by Peter Maydell
parent f73bd7503d
commit e002861876
1 changed files with 10 additions and 10 deletions
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20
fpu/softfloat-parts.c.inc
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@ -85,7 +85,7 @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b,
* But if we're not in default-NaN mode then the target must
* specify.
*/
which = 3;
goto default_nan;
} else if (infzero) {
/*
* Inf * 0 + NaN -- some implementations return the
@ -93,17 +93,18 @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b,
*/
switch (s->float_infzeronan_rule) {
case float_infzeronan_dnan_never:
which = 2;
break;
case float_infzeronan_dnan_always:
which = 3;
break;
goto default_nan;
case float_infzeronan_dnan_if_qnan:
which = is_qnan(c->cls) ? 3 : 2;
if (is_qnan(c->cls)) {
goto default_nan;
}
break;
default:
g_assert_not_reached();
}
which = 2;
} else {
FloatClass cls[3] = { a->cls, b->cls, c->cls };
Float3NaNPropRule rule = s->float_3nan_prop_rule;
@ -123,11 +124,6 @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b,
}
}
if (which == 3) {
parts_default_nan(a, s);
return a;
}
switch (which) {
case 0:
break;
@ -144,6 +140,10 @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b,
parts_silence_nan(a, s);
}
return a;
default_nan:
parts_default_nan(a, s);
return a;
}
/*