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[1/7] rsqrte_f32: No need to copy sign bit.

Message ID 1319116568-2663-2-git-send-email-peter.maydell@linaro.org
State New
Headers show

Commit Message

Peter Maydell Oct. 20, 2011, 1:16 p.m. UTC 
From: Christophe LYON <christophe.lyon@st.com>

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>
---
 target-arm/helper.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
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Patch

diff --git a/target-arm/helper.c b/target-arm/helper.c
index e2428eb..17ef98b 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -3039,8 +3039,7 @@  float32 HELPER(rsqrte_f32)(float32 a, CPUState *env)
 
     val64 = float64_val(f64);
 
-    val = ((val64 >> 63)  & 0x80000000)
-        | ((result_exp & 0xff) << 23)
+    val = ((result_exp & 0xff) << 23)
         | ((val64 >> 29)  & 0x7fffff);
     return make_float32(val);
 }