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fpu/softfloat: Specialize on snan_bit_is_one

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Only MIPS requires snan_bit_is_one to be variable.  While we are
specializing softfloat behaviour, allow other targets to eliminate
this runtime check.

Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Yongbok Kim <yongbok.kim@mips.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Alexander Graf <agraf@suse.de>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
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>
This commit is contained in:
Richard Henderson 2018-05-10 14:48:17 -07:00
parent 5240a30dcc
commit 03385dfdaa
6 changed files with 44 additions and 30 deletions
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2
target/unicore32/cpu.c
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@ -70,7 +70,6 @@ static void unicore_ii_cpu_initfn(Object *obj)
set_feature(env, UC32_HWCAP_CMOV);
set_feature(env, UC32_HWCAP_UCF64);
set_snan_bit_is_one(1, &env->ucf64.fp_status);
}
static void uc32_any_cpu_initfn(Object *obj)
@ -83,7 +82,6 @@ static void uc32_any_cpu_initfn(Object *obj)
set_feature(env, UC32_HWCAP_CMOV);
set_feature(env, UC32_HWCAP_UCF64);
set_snan_bit_is_one(1, &env->ucf64.fp_status);
}
static void uc32_cpu_realizefn(DeviceState *dev, Error **errp)