1/* Copyright (C) 2008-2020 Free Software Foundation, Inc. 2 Contributor: Joern Rennecke <joern.rennecke@embecosm.com> 3 on behalf of Synopsys Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 3, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17Under Section 7 of GPL version 3, you are granted additional 18permissions described in the GCC Runtime Library Exception, version 193.1, as published by the Free Software Foundation. 20 21You should have received a copy of the GNU General Public License and 22a copy of the GCC Runtime Library Exception along with this program; 23see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24<http://www.gnu.org/licenses/>. */ 25 26#include "arc-ieee-754.h" 27/* inputs: r0, r1 28 output: z flag 29 clobber: r12, flags 30 For NaNs, bit 22 .. bit 30 must be set. */ 31#if 0 /* DEBUG */ 32 .global __eqsf2 33 .balign 4 34 FUNC(__eqsf2) 35__eqsf2: 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 __eqsf2_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 __eqsf2_asm` ld.ab r10,[sp,4] 44 pop_s blink 45 breq.d r11,0,0f 46 ld.ab r11,[sp,4] 47 jne_s [blink] 48 bl abort 490: jeq_s [blink] 50 bl abort 51 ENDFUNC(__eqsf2) 52#define __eqsf2 __eqsf2_asm 53#endif /* DEBUG */ 54 /* Good performance as long as the binary difference is 55 well predictable (as seen from the branch predictor). */ 56 .global __eqsf2 57 .balign 4 58 HIDDEN_FUNC(__eqsf2) 59__eqsf2: 60 breq r0, r1,.Lno_bdiff 61 or r12,r0,r1 62 j_s.d [blink] 63 bmsk.f 0,r12,30 64.Lno_bdiff: 65 bmsk r12,r0,23 66 add1.f r12,r12,r0 /* set c iff NaN; also, clear z if NaN. */ 67 j_s.d [blink] 68 cmp.cc r0,r1 69 ENDFUNC(__eqsf2) 70