On 25/04/2025 10:35, Clément Chigot wrote:

(added Richard on CC)

FSR_NVA should be set when one of the operands is a signaling NaN or
when using FCMPEx instructions. But those cases are already handled
within check_ieee_exception or floatxx_compare functions.
Otherwise, it should be left untouched.

FTR, this was detected by inf-compare-[5678] tests within gcc
testsuites.

Signed-off-by: Clément Chigot <chi...@adacore.com>
---
  target/sparc/fop_helper.c | 1 -
  1 file changed, 1 deletion(-)

diff --git a/target/sparc/fop_helper.c b/target/sparc/fop_helper.c
index c25097d07f..b57da7c9ea 100644
--- a/target/sparc/fop_helper.c
+++ b/target/sparc/fop_helper.c
@@ -446,7 +446,6 @@ static uint32_t finish_fcmp(CPUSPARCState *env, 
FloatRelation r, uintptr_t ra)
      case float_relation_greater:
          return 2;
      case float_relation_unordered:
-        env->fsr |= FSR_NVA;
          return 3;
      }
      g_assert_not_reached();

I don't really use floating point in my SPARC images, but if Richard is happy then I don't mind giving:

Acked-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk>


ATB,

Mark.


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