[v2,for-10.0,13/54] target/hppa: Set FloatInfZeroNaNRule explicitly

Commit Message

Peter Maydell Dec. 2, 2024, 1:13 p.m. UTC

Set the FloatInfZeroNaNRule explicitly for the HPPA target,
so we can remove the ifdef from pickNaNMulAdd().

As this is the last target to be converted to explicitly setting
the rule, we can remove the fallback code in pickNaNMulAdd()
entirely.

Signed-off-by: Peter Maydell <[e-mail]>
Reviewed-by: Richard Henderson <[e-mail]>
---
 target/hppa/fpu_helper.c       |  2 ++
 fpu/softfloat-specialize.c.inc | 13 +------------
 2 files changed, 3 insertions(+), 12 deletions(-)

Patch

diff --git a/target/hppa/fpu_helper.c b/target/hppa/fpu_helper.c
index 0e44074ba82..393cae33bf9 100644
--- a/target/hppa/fpu_helper.c
+++ b/target/hppa/fpu_helper.c
@@ -55,6 +55,8 @@  void HELPER(loaded_fr0)(CPUHPPAState *env)
      * HPPA does note implement a CPU reset method at all...
      */
     set_float_2nan_prop_rule(float_2nan_prop_s_ab, &env->fp_status);
+    /* For inf * 0 + NaN, return the input NaN */
+    set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status);
 }
 
 void cpu_hppa_loaded_fr0(CPUHPPAState *env)
diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc
index 05dec2fcb4c..3e4ec938b25 100644
--- a/fpu/softfloat-specialize.c.inc
+++ b/fpu/softfloat-specialize.c.inc
@@ -475,8 +475,6 @@  static int pickNaN(FloatClass a_cls, FloatClass b_cls,
 static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls,
                          bool infzero, float_status *status)
 {
-    FloatInfZeroNaNRule rule = status->float_infzeronan_rule;
-
     /*
      * We guarantee not to require the target to tell us how to
      * pick a NaN if we're always returning the default NaN.
@@ -485,21 +483,12 @@  static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls,
      */
     assert(!status->default_nan_mode);
 
-    if (rule == float_infzeronan_none) {
-        /*
-         * Temporarily fall back to ifdef ladder
-         */
-#if defined(TARGET_HPPA)
-        rule = float_infzeronan_dnan_never;
-#endif
-    }
-
     if (infzero) {
         /*
          * Inf * 0 + NaN -- some implementations return the default NaN here,
          * and some return the input NaN.
          */
-        switch (rule) {
+        switch (status->float_infzeronan_rule) {
         case float_infzeronan_dnan_never:
             return 2;
         case float_infzeronan_dnan_always: