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

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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>
This commit is contained in:
Peter Maydell 2011-03-11 08:12:26 +00:00 committed by Aurelien Jarno
parent 274f1b041e
commit 4a9f9cb24d
1 changed files with 2 additions and 6 deletions
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8
target-arm/neon_helper.c
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@ -1773,16 +1773,12 @@ uint32_t HELPER(neon_qneg_s32)(CPUState *env, uint32_t x)
/* NEON Float helpers. */ /* NEON Float helpers. */
uint32_t HELPER(neon_min_f32)(uint32_t a, uint32_t b) uint32_t HELPER(neon_min_f32)(uint32_t a, uint32_t b)
{ {
float32 f0 = make_float32(a); return float32_val(float32_min(make_float32(a), make_float32(b), NFS));
float32 f1 = make_float32(b);
return (float32_compare_quiet(f0, f1, NFS) == -1) ? a : b;
} }
uint32_t HELPER(neon_max_f32)(uint32_t a, uint32_t b) uint32_t HELPER(neon_max_f32)(uint32_t a, uint32_t b)
{ {
float32 f0 = make_float32(a); return float32_val(float32_max(make_float32(a), make_float32(b), NFS));
float32 f1 = make_float32(b);
return (float32_compare_quiet(f0, f1, NFS) == 1) ? a : b;
} }
uint32_t HELPER(neon_abd_f32)(uint32_t a, uint32_t b) uint32_t HELPER(neon_abd_f32)(uint32_t a, uint32_t b)