From 03385dfdaaa2dc31bbd07d13244a6b037bfab4cc Mon Sep 17 00:00:00 2001
From: Richard Henderson <richard.henderson@linaro.org>
Date: Thu, 10 May 2018 14:48:17 -0700
Subject: fpu/softfloat: Specialize on snan_bit_is_one
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

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>
---
 include/fpu/softfloat-types.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/fpu')

diff --git a/include/fpu/softfloat-types.h b/include/fpu/softfloat-types.h
index 4e378cb..2aae6a8 100644
--- a/include/fpu/softfloat-types.h
+++ b/include/fpu/softfloat-types.h
@@ -173,6 +173,7 @@ typedef struct float_status {
     /* should denormalised inputs go to zero and set the input_denormal flag? */
     flag flush_inputs_to_zero;
     flag default_nan_mode;
+    /* not always used -- see snan_bit_is_one() in softfloat-specialize.h */
     flag snan_bit_is_one;
 } float_status;
 
-- 
cgit v1.1