target-arm: Use new softfloat min/max functions for VMAX, VMIN

Use the new softfloat min/max functions to implement the Neon VMAX
and VMIN instructions. This allows us to get the right behaviour
for NaN and negative zero.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

diff --git a/target-arm/neon_helper.c b/target-arm/neon_helper.c
index bf324c62b6d966bf37e3f69076d7ae14b90cdf03..71f1a7ead01ef5b5ad33a37f8640a8419982790c 100644 (file)
--- a/target-arm/neon_helper.c
+++ b/target-arm/neon_helper.c
@@ -1773,16 +1773,12 @@ uint32_t HELPER(neon_qneg_s32)(CPUState *env, uint32_t x)
 /* NEON Float helpers.  */
 uint32_t HELPER(neon_min_f32)(uint32_t a, uint32_t b)
 {
-    float32 f0 = make_float32(a);
-    float32 f1 = make_float32(b);
-    return (float32_compare_quiet(f0, f1, NFS) == -1) ? a : b;
+    return float32_val(float32_min(make_float32(a), make_float32(b), NFS));
 }
 
 uint32_t HELPER(neon_max_f32)(uint32_t a, uint32_t b)
 {
-    float32 f0 = make_float32(a);
-    float32 f1 = make_float32(b);
-    return (float32_compare_quiet(f0, f1, NFS) == 1) ? a : b;
+    return float32_val(float32_max(make_float32(a), make_float32(b), NFS));
 }
 
 uint32_t HELPER(neon_abd_f32)(uint32_t a, uint32_t b)