1 /* Copyright (C) 2008-2014 Free Software Foundation, Inc.
2 Contributor: Joern Rennecke <joern.rennecke@embecosm.com>
3 on behalf of Synopsys Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 3, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 <http://www.gnu.org/licenses/>. */
26 #include "arc-ieee-754.h"
30 For NaNs, bit 19.. bit 30 of the high word must be set. */
36 st.a r11,[sp,-4]` push_s blink` st.a r10,[sp,-4]` st.a r9,[sp,-4]
37 st.a r8,[sp,-4]` st.a r7,[sp,-4]` st.a r6,[sp,-4]` st.a r5,[sp,-4]
38 st.a r4,[sp,-4]` push_s r3` push_s r2` push_s r1`
39 bl.d __eqdf2_c` push_s r0
40 mov r11,r0` pop_s r0` pop_s r1` pop_s r2` pop_s r3
41 ld.ab r4,[sp,4]` ld.ab r5,[sp,4]` ld.ab r6,[sp,4]`
42 ld.ab r7,[sp,4]` ld.ab r8,[sp,4]` ld.ab r9,[sp,4]
43 bl.d __eqdf2_asm` ld.ab r10,[sp,4]
52 #define __eqdf2 __eqdf2_asm
57 /* Good performance as long as the difference in high word is
58 well predictable (as seen from the branch predictor). */
60 brne.d DBL0H,DBL1H,.Lhighdiff
65 #endif /* DPFP_COMPAT */
66 add1.f r12,r12,DBL0H /* set c iff NaN; also, clear z if NaN. */
76 /* ??? could we do better by speeding up some 'common' case of inequality? */