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rsqrte_f32: No need to copy sign bit. 

Indeed, the result is known to be always positive.

Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Christophe LYON 2011-10-19 16:14:05 +00:00 committed by Peter Maydell
parent cfce6d8934
commit 26cc6abf61
1 changed files with 1 additions and 2 deletions
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3
target-arm/helper.c
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@ -3039,8 +3039,7 @@ float32 HELPER(rsqrte_f32)(float32 a, CPUState *env)
val64 = float64_val(f64); val64 = float64_val(f64);
val = ((val64 >> 63) & 0x80000000) val = ((result_exp & 0xff) << 23)
| ((result_exp & 0xff) << 23)
| ((val64 >> 29) & 0x7fffff); | ((val64 >> 29) & 0x7fffff);
return make_float32(val); return make_float32(val);
} }