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target/arm: Remove floatX_maybe_silence_nan from conversions

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This is now handled properly by the generic softfloat code.

Backports commit a9d173dc603af74102c24c1c92d479ba580bbf07 from qemu
This commit is contained in:
Richard Henderson 2018-05-19 23:23:06 -04:00 committed by Lioncash
parent 5e532f6d20
commit 1b6cac4e7e
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GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 2 additions and 11 deletions
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1
qemu/target/arm/helper-a64.c
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@ -464,7 +464,6 @@ float32 HELPER(fcvtx_f64_to_f32)(float64 a, CPUARMState *env)
set_float_rounding_mode(float_round_to_zero, &tstat); set_float_rounding_mode(float_round_to_zero, &tstat);
set_float_exception_flags(0, &tstat); set_float_exception_flags(0, &tstat);
r = float64_to_float32(a, &tstat); r = float64_to_float32(a, &tstat);
r = float32_maybe_silence_nan(r, &tstat);
exflags = get_float_exception_flags(&tstat); exflags = get_float_exception_flags(&tstat);
if (exflags & float_flag_inexact) { if (exflags & float_flag_inexact) {
r = make_float32(float32_val(r) | 1); r = make_float32(float32_val(r) | 1);

12
qemu/target/arm/helper.c
View file

@ -10604,20 +10604,12 @@ FLOAT_CONVS(ui, d, 64, u)
/* floating point conversion */ /* floating point conversion */
float64 VFP_HELPER(fcvtd, s)(float32 x, CPUARMState *env) float64 VFP_HELPER(fcvtd, s)(float32 x, CPUARMState *env)
{ {
float64 r = float32_to_float64(x, &env->vfp.fp_status); return float32_to_float64(x, &env->vfp.fp_status);
/* ARM requires that S<->D conversion of any kind of NaN generates
* a quiet NaN by forcing the most significant frac bit to 1.
*/
return float64_maybe_silence_nan(r, &env->vfp.fp_status);
} }
float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env) float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env)
{ {
float32 r = float64_to_float32(x, &env->vfp.fp_status); return float64_to_float32(x, &env->vfp.fp_status);
/* ARM requires that S<->D conversion of any kind of NaN generates
* a quiet NaN by forcing the most significant frac bit to 1.
*/
return float32_maybe_silence_nan(r, &env->vfp.fp_status);
} }
/* VFP3 fixed point conversion. */ /* VFP3 fixed point conversion. */