target/arm: Remove floatX_maybe_silence_nan from conversions

This is now handled properly by the generic softfloat code.

Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c
index 6f0eb83661658c56cff2046e52b3532236d7a7de..f92bdea732f405faf9401f4abea8fa51277c0db0 100644 (file)
--- a/target/arm/helper-a64.c
+++ b/target/arm/helper-a64.c
@@ -466,7 +466,6 @@ float32 HELPER(fcvtx_f64_to_f32)(float64 a, CPUARMState *env)
     set_float_rounding_mode(float_round_to_zero, &tstat);
     set_float_exception_flags(0, &tstat);
     r = float64_to_float32(a, &tstat);
-    r = float32_maybe_silence_nan(r, &tstat);
     exflags = get_float_exception_flags(&tstat);
     if (exflags & float_flag_inexact) {
         r = make_float32(float32_val(r) | 1);

diff --git a/target/arm/helper.c b/target/arm/helper.c
index e05c7230d4bb1016b8bed7c8f086e97aa0973a0f..db8bbe52a6d515910c98d76dabe9717493e4da8d 100644 (file)
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -11348,20 +11348,12 @@ FLOAT_CONVS(ui, d, 64, u)
 /* floating point conversion */
 float64 VFP_HELPER(fcvtd, s)(float32 x, CPUARMState *env)
 {
-    float64 r = 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);
+    return float32_to_float64(x, &env->vfp.fp_status);
 }
 
 float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env)
 {
-    float32 r =  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);
+    return float64_to_float32(x, &env->vfp.fp_status);
 }
 
 /* VFP3 fixed point conversion.  */