Set the Float3NaNPropRule explicitly for Arm, and remove the
ifdef from pickNaNMulAdd().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/mips/fpu_helper.h       | 4 ++++
 target/mips/msa.c              | 3 +++
 fpu/softfloat-specialize.c.inc | 8 +-------
 3 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/target/mips/fpu_helper.h b/target/mips/fpu_helper.h
index be66f2f813a..8ca0ca7ea39 100644
--- a/target/mips/fpu_helper.h
+++ b/target/mips/fpu_helper.h
@@ -29,6 +29,7 @@ static inline void restore_snan_bit_mode(CPUMIPSState *env)
 {
     bool nan2008 = env->active_fpu.fcr31 & (1 << FCR31_NAN2008);
     FloatInfZeroNaNRule izn_rule;
+    Float3NaNPropRule nan3_rule;
 
     /*
      * With nan2008, SNaNs are silenced in the usual way.
@@ -44,6 +45,9 @@ static inline void restore_snan_bit_mode(CPUMIPSState *env)
      */
     izn_rule = nan2008 ? float_infzeronan_dnan_never : float_infzeronan_dnan_always;
     set_float_infzeronan_rule(izn_rule, &env->active_fpu.fp_status);
+    nan3_rule = nan2008 ? float_3nan_prop_s_cab : float_3nan_prop_s_abc;
+    set_float_3nan_prop_rule(nan3_rule, &env->active_fpu.fp_status);
+
 }
 
 static inline void restore_fp_status(CPUMIPSState *env)
diff --git a/target/mips/msa.c b/target/mips/msa.c
index cc152db27f9..93a9a87d76d 100644
--- a/target/mips/msa.c
+++ b/target/mips/msa.c
@@ -66,6 +66,9 @@ void msa_reset(CPUMIPSState *env)
     set_float_2nan_prop_rule(float_2nan_prop_s_ab,
                              &env->active_tc.msa_fp_status);
 
+    set_float_3nan_prop_rule(float_3nan_prop_s_cab,
+                             &env->active_tc.msa_fp_status);
+
     /* clear float_status exception flags */
     set_float_exception_flags(0, &env->active_tc.msa_fp_status);
 
diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc
index 565790b1834..2d029de7baa 100644
--- a/fpu/softfloat-specialize.c.inc
+++ b/fpu/softfloat-specialize.c.inc
@@ -502,13 +502,7 @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls,
     }
 
     if (rule == float_3nan_prop_none) {
-#if defined(TARGET_MIPS)
-        if (snan_bit_is_one(status)) {
-            rule = float_3nan_prop_s_abc;
-        } else {
-            rule = float_3nan_prop_s_cab;
-        }
-#elif defined(TARGET_XTENSA)
+#if defined(TARGET_XTENSA)
         if (status->use_first_nan) {
             rule = float_3nan_prop_abc;
         } else {
-- 
2.34.1

On 11/28/24 04:43, Peter Maydell wrote:
> Set the Float3NaNPropRule explicitly for Arm, and remove the
> ifdef from pickNaNMulAdd().
> 
> Signed-off-by: Peter Maydell<peter.maydell@linaro.org>
> ---
>   target/mips/fpu_helper.h       | 4 ++++
>   target/mips/msa.c              | 3 +++
>   fpu/softfloat-specialize.c.inc | 8 +-------
>   3 files changed, 8 insertions(+), 7 deletions(-)

Yay.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~