diff options
Diffstat (limited to 'fpu')
| -rw-r--r-- | fpu/softfloat-specialize.c.inc | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index 943e3301d2..9096fb302b 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -390,7 +390,8 @@ bool float32_is_signaling_nan(float32 a_, float_status *status) static int pickNaN(FloatClass a_cls, FloatClass b_cls, bool aIsLargerSignificand, float_status *status) { -#if defined(TARGET_ARM) || defined(TARGET_MIPS) || defined(TARGET_HPPA) +#if defined(TARGET_ARM) || defined(TARGET_MIPS) || defined(TARGET_HPPA) \ + || defined(TARGET_LOONGARCH64) /* ARM mandated NaN propagation rules (see FPProcessNaNs()), take * the first of: * 1. A if it is signaling @@ -574,6 +575,29 @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, return 1; } } +#elif defined(TARGET_LOONGARCH64) + /* + * For LoongArch systems that conform to IEEE754-2008, the (inf,zero,nan) + * case sets InvalidOp and returns the input value 'c' + */ + if (infzero) { + float_raise(float_flag_invalid | float_flag_invalid_imz, status); + return 2; + } + /* Prefer sNaN over qNaN, in the c, a, b order. */ + if (is_snan(c_cls)) { + return 2; + } else if (is_snan(a_cls)) { + return 0; + } else if (is_snan(b_cls)) { + return 1; + } else if (is_qnan(c_cls)) { + return 2; + } else if (is_qnan(a_cls)) { + return 0; + } else { + return 1; + } #elif defined(TARGET_PPC) /* For PPC, the (inf,zero,qnan) case sets InvalidOp, but we prefer * to return an input NaN if we have one (ie c) rather than generating |