--- /dev/null
+dnl IA-64 mpn_rsh1add_n/mpn_rsh1sub_n -- rp[] = (up[] +- vp[]) >> 1.
+
+dnl Copyright 2003, 2004, 2005 Free Software Foundation, Inc.
+
+dnl This file is part of the GNU MP Library.
+
+dnl The GNU MP Library is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU Lesser General Public License as published
+dnl by the Free Software Foundation; either version 3 of the License, or (at
+dnl your option) any later version.
+
+dnl The GNU MP Library is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+dnl License for more details.
+
+dnl You should have received a copy of the GNU Lesser General Public License
+dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
+
+include(`../config.m4')
+
+C cycles/limb
+C Itanium: 2.5
+C Itanium 2: 1.5
+
+C TODO
+C * Rewrite function entry code using aorslsh1_n.asm style.
+C * Micro-optimize feed-in and wind-down code.
+
+C INPUT PARAMETERS
+define(`rp',`r32')
+define(`up',`r33')
+define(`vp',`r34')
+define(`n',`r35')
+
+ifdef(`OPERATION_rsh1add_n',`
+ define(ADDSUB, add)
+ define(PRED, ltu)
+ define(INCR, 1)
+ define(LIM, -1)
+ define(func, mpn_rsh1add_n)
+')
+ifdef(`OPERATION_rsh1sub_n',`
+ define(ADDSUB, sub)
+ define(PRED, gtu)
+ define(INCR, -1)
+ define(LIM, 0)
+ define(func, mpn_rsh1sub_n)
+')
+
+C Some useful aliases for registers we use
+define(`u0',`r14') define(`u1',`r15') define(`u2',`r16') define(`u3',`r17')
+define(`v0',`r18') define(`v1',`r19') define(`v2',`r20') define(`v3',`r21')
+define(`w0',`r22') define(`w1',`r23') define(`w2',`r24') define(`w3',`r25')
+define(`x0',`r26') define(`x1',`r9') define(`x2',`r30') define(`x3',`r31')
+
+MULFUNC_PROLOGUE(mpn_rsh1add_n mpn_rsh1sub_n)
+
+ASM_START()
+PROLOGUE(func)
+ .prologue
+ .save ar.lc, r2
+ .body
+ifdef(`HAVE_ABI_32',`
+ addp4 rp = 0, rp C M I
+ addp4 up = 0, up C M I
+ addp4 vp = 0, vp C M I
+ zxt4 n = n C I
+ ;;
+')
+ {.mmi; ld8 r11 = [vp], 8 C M01
+ ld8 r10 = [up], 8 C M01
+ mov.i r2 = ar.lc C I0
+}{.mmi; and r14 = 3, n C M I
+ cmp.lt p15, p0 = 4, n C M I
+ add n = -4, n C M I
+ ;;
+}{.mmi; cmp.eq p6, p0 = 1, r14 C M I
+ cmp.eq p7, p0 = 2, r14 C M I
+ cmp.eq p8, p0 = 3, r14 C M I
+}{.bbb
+ (p6) br.dptk .Lb01 C B
+ (p7) br.dptk .Lb10 C B
+ (p8) br.dptk .Lb11 C B
+}
+
+.Lb00: ld8 v0 = [vp], 8 C M01
+ ld8 u0 = [up], 8 C M01
+ shr.u n = n, 2 C I0
+ ;;
+ ld8 v1 = [vp], 8 C M01
+ ld8 u1 = [up], 8 C M01
+ ADDSUB w3 = r10, r11 C M I
+ ;;
+ ld8 v2 = [vp], 8 C M01
+ ld8 u2 = [up], 8 C M01
+ (p15) br.dpnt .grt4 C B
+ ;;
+
+ cmp.PRED p7, p0 = w3, r10 C M I
+ and r8 = 1, w3 C M I
+ ADDSUB w0 = u0, v0 C M I
+ ;;
+ cmp.PRED p8, p0 = w0, u0 C M I
+ ADDSUB w1 = u1, v1 C M I
+ ;;
+ cmp.PRED p9, p0 = w1, u1 C M I
+ (p7) cmp.eq.or p8, p0 = LIM, w0 C M I
+ (p7) add w0 = INCR, w0 C M I
+ ;;
+ shrp x3 = w0, w3, 1 C I0
+ ADDSUB w2 = u2, v2 C M I
+ (p8) cmp.eq.or p9, p0 = LIM, w1 C M I
+ (p8) add w1 = INCR, w1 C M I
+ br .Lcj4 C B
+
+.grt4: ld8 v3 = [vp], 8 C M01
+ cmp.PRED p7, p0 = w3, r10 C M I
+ ld8 u3 = [up], 8 C M01
+ and r8 = 1, w3 C M I
+ ;;
+ ADDSUB w0 = u0, v0 C M I
+ ld8 v0 = [vp], 8 C M01
+ add n = -1, n
+ ;;
+ cmp.PRED p8, p0 = w0, u0 C M I
+ ld8 u0 = [up], 8 C M01
+ ADDSUB w1 = u1, v1 C M I
+ ;;
+ ld8 v1 = [vp], 8 C M01
+ mov.i ar.lc = n C I0
+ cmp.PRED p9, p0 = w1, u1 C M I
+ ld8 u1 = [up], 8 C M01
+ (p7) cmp.eq.or p8, p0 = LIM, w0 C M I
+ (p7) add w0 = INCR, w0 C M I
+ ;;
+ ADDSUB w2 = u2, v2 C M I
+ ld8 v2 = [vp], 8 C M01
+ shrp x3 = w0, w3, 1 C I0
+ (p8) cmp.eq.or p9, p0 = LIM, w1 C M I
+ (p8) add w1 = INCR, w1 C M I
+ br .LL00 C B
+
+
+.Lb01: ADDSUB w2 = r10, r11 C M I
+ shr.u n = n, 2 C I0
+ (p15) br.dpnt .grt1 C B
+ ;;
+
+ cmp.PRED p6, p7 = w2, r10 C M I
+ shr.u x2 = w2, 1 C I0
+ and r8 = 1, w2 C M I
+ ;;
+ (p6) dep x2 = -1, x2, 63, 1 C I0
+ br .Lcj1 C B
+
+.grt1: ld8 v3 = [vp], 8 C M01
+ ld8 u3 = [up], 8 C M01
+ ;;
+ ld8 v0 = [vp], 8 C M01
+ ld8 u0 = [up], 8 C M01
+ mov.i ar.lc = n C FIXME swap with next I0
+ ;;
+ ld8 v1 = [vp], 8 C M01
+ ld8 u1 = [up], 8 C M01
+ ;;
+ ld8 v2 = [vp], 8 C M01
+ ld8 u2 = [up], 8 C M01
+ cmp.PRED p6, p0 = w2, r10 C M I
+ and r8 = 1, w2 C M I
+ ADDSUB w3 = u3, v3 C M I
+ br.cloop.dptk .grt5 C B
+ ;;
+
+ cmp.PRED p7, p0 = w3, u3 C M I
+ ;;
+ ADDSUB w0 = u0, v0 C M I
+ (p6) cmp.eq.or p7, p0 = LIM, w3 C M I
+ (p6) add w3 = INCR, w3 C M I
+ ;;
+ cmp.PRED p8, p0 = w0, u0 C M I
+ shrp x2 = w3, w2, 1 C I0
+ ADDSUB w1 = u1, v1 C M I
+ ;;
+ cmp.PRED p9, p0 = w1, u1 C M I
+ (p7) cmp.eq.or p8, p0 = LIM, w0 C M I
+ (p7) add w0 = INCR, w0 C M I
+ br .Lcj5 C B
+
+.grt5: ld8 v3 = [vp], 8 C M01
+ cmp.PRED p7, p0 = w3, u3 C M I
+ ld8 u3 = [up], 8 C M01
+ ;;
+ ADDSUB w0 = u0, v0 C M I
+ ld8 v0 = [vp], 8 C M01
+ (p6) cmp.eq.or p7, p0 = LIM, w3 C M I
+ (p6) add w3 = INCR, w3 C M I
+ ;;
+ cmp.PRED p8, p0 = w0, u0 C M I
+ shrp x2 = w3, w2, 1 C I0
+ ld8 u0 = [up], 8 C M01
+ ADDSUB w1 = u1, v1 C M I
+ ;;
+ ld8 v1 = [vp], 8 C M01
+ cmp.PRED p9, p0 = w1, u1 C M I
+ ld8 u1 = [up], 8 C M01
+ (p7) cmp.eq.or p8, p0 = LIM, w0 C M I
+ (p7) add w0 = INCR, w0 C M I
+ br .LL01 C B
+
+
+.Lb10: ld8 v2 = [vp], 8 C M01
+ ld8 u2 = [up], 8 C M01
+ shr.u n = n, 2 C I0
+ ADDSUB w1 = r10, r11 C M I
+ (p15) br.dpnt .grt2 C B
+ ;;
+
+ cmp.PRED p9, p0 = w1, r10 C M I
+ and r8 = 1, w1 C M I
+ ADDSUB w2 = u2, v2 C M I
+ ;;
+ cmp.PRED p6, p0 = w2, u2 C M I
+ ;;
+ (p9) cmp.eq.or p6, p0 = LIM, w2 C M I
+ (p9) add w2 = INCR, w2 C M I
+ ;;
+ shrp x1 = w2, w1, 1 C I0
+ shr.u x2 = w2, 1 C I0
+ br .Lcj2 C B
+
+.grt2: ld8 v3 = [vp], 8 C M01
+ ld8 u3 = [up], 8 C M01
+ ;;
+ ld8 v0 = [vp], 8 C M01
+ ld8 u0 = [up], 8 C M01
+ mov.i ar.lc = n C I0
+ ;;
+ ld8 v1 = [vp], 8 C M01
+ cmp.PRED p9, p0 = w1, r10 C M I
+ ld8 u1 = [up], 8 C M01
+ and r8 = 1, w1 C M I
+ ;;
+ ADDSUB w2 = u2, v2 C M I
+ ld8 v2 = [vp], 8 C M01
+ ;;
+ cmp.PRED p6, p0 = w2, u2 C M I
+ ld8 u2 = [up], 8 C M01
+ ADDSUB w3 = u3, v3 C M I
+ br.cloop.dptk .grt6 C B
+ ;;
+
+ cmp.PRED p7, p0 = w3, u3 C M I
+ (p9) cmp.eq.or p6, p0 = LIM, w2 C M I
+ (p9) add w2 = INCR, w2 C M I
+ ;;
+ shrp x1 = w2, w1, 1 C I0
+ ADDSUB w0 = u0, v0 C M I
+ (p6) cmp.eq.or p7, p0 = LIM, w3 C M I
+ (p6) add w3 = INCR, w3 C M I
+ br .Lcj6 C B
+
+.grt6: ld8 v3 = [vp], 8 C M01
+ cmp.PRED p7, p0 = w3, u3 C M I
+ ld8 u3 = [up], 8 C M01
+ (p9) cmp.eq.or p6, p0 = LIM, w2 C M I
+ (p9) add w2 = INCR, w2 C M I
+ ;;
+ shrp x1 = w2, w1, 1 C I0
+ ADDSUB w0 = u0, v0 C M I
+ ld8 v0 = [vp], 8 C M01
+ (p6) cmp.eq.or p7, p0 = LIM, w3 C M I
+ (p6) add w3 = INCR, w3 C M I
+ br .LL10 C B
+
+
+.Lb11: ld8 v1 = [vp], 8 C M01
+ ld8 u1 = [up], 8 C M01
+ shr.u n = n, 2 C I0
+ ;;
+ ld8 v2 = [vp], 8 C M01
+ ld8 u2 = [up], 8 C M01
+ ADDSUB w0 = r10, r11 C M I
+ (p15) br.dpnt .grt3 C B
+ ;;
+
+ cmp.PRED p8, p0 = w0, r10 C M I
+ ADDSUB w1 = u1, v1 C M I
+ and r8 = 1, w0 C M I
+ ;;
+ cmp.PRED p9, p0 = w1, u1 C M I
+ ;;
+ ADDSUB w2 = u2, v2 C M I
+ (p8) cmp.eq.or p9, p0 = LIM, w1 C M I
+ (p8) add w1 = INCR, w1 C M I
+ ;;
+ cmp.PRED p6, p0 = w2, u2 C M I
+ shrp x0 = w1, w0, 1 C I0
+ ;;
+ (p9) cmp.eq.or p6, p0 = LIM, w2 C M I
+ (p9) add w2 = INCR, w2 C M I
+ br .Lcj3 C B
+
+.grt3: ld8 v3 = [vp], 8 C M01
+ ld8 u3 = [up], 8 C M01
+ ;;
+ ld8 v0 = [vp], 8 C M01
+ mov.i ar.lc = n C I0
+ cmp.PRED p8, p0 = w0, r10 C M I
+ ld8 u0 = [up], 8 C M01
+ ADDSUB w1 = u1, v1 C M I
+ and r8 = 1, w0 C M I
+ ;;
+ ld8 v1 = [vp], 8 C M01
+ cmp.PRED p9, p0 = w1, u1 C M I
+ ld8 u1 = [up], 8 C M01
+ ;;
+ ADDSUB w2 = u2, v2 C M I
+ ld8 v2 = [vp], 8 C M01
+ (p8) cmp.eq.or p9, p0 = LIM, w1 C M I
+ (p8) add w1 = INCR, w1 C M I
+ ;;
+ cmp.PRED p6, p0 = w2, u2 C M I
+ shrp x0 = w1, w0, 1 C I0
+ ld8 u2 = [up], 8 C M01
+ ADDSUB w3 = u3, v3 C M I
+ br.cloop.dptk .grt7 C B
+ ;;
+
+ cmp.PRED p7, p0 = w3, u3 C M I
+ (p9) cmp.eq.or p6, p0 = LIM, w2 C M I
+ (p9) add w2 = INCR, w2 C M I
+ br .Lcj7 C B
+
+.grt7: ld8 v3 = [vp], 8 C M01
+ cmp.PRED p7, p0 = w3, u3 C M I
+ ld8 u3 = [up], 8 C M01
+ (p9) cmp.eq.or p6, p0 = LIM, w2 C M I
+ (p9) add w2 = INCR, w2 C M I
+ br .LL11 C B
+
+
+C *** MAIN LOOP START ***
+ ALIGN(32)
+.Loop: st8 [rp] = x3, 8 C M23
+ ld8 v3 = [vp], 8 C M01
+ cmp.PRED p7, p0 = w3, u3 C M I
+ ld8 u3 = [up], 8 C M01
+ (p9) cmp.eq.or p6, p0 = LIM, w2 C M I
+ (p9) add w2 = INCR, w2 C M I
+ ;;
+.LL11: st8 [rp] = x0, 8 C M23
+ shrp x1 = w2, w1, 1 C I0
+ ADDSUB w0 = u0, v0 C M I
+ ld8 v0 = [vp], 8 C M01
+ (p6) cmp.eq.or p7, p0 = LIM, w3 C M I
+ (p6) add w3 = INCR, w3 C M I
+ ;;
+.LL10: cmp.PRED p8, p0 = w0, u0 C M I
+ shrp x2 = w3, w2, 1 C I0
+ nop.b 0
+ ld8 u0 = [up], 8 C M01
+ ADDSUB w1 = u1, v1 C M I
+ nop.b 0
+ ;;
+ st8 [rp] = x1, 8 C M23
+ ld8 v1 = [vp], 8 C M01
+ cmp.PRED p9, p0 = w1, u1 C M I
+ ld8 u1 = [up], 8 C M01
+ (p7) cmp.eq.or p8, p0 = LIM, w0 C M I
+ (p7) add w0 = INCR, w0 C M I
+ ;;
+.LL01: st8 [rp] = x2, 8 C M23
+ shrp x3 = w0, w3, 1 C I0
+ ADDSUB w2 = u2, v2 C M I
+ ld8 v2 = [vp], 8 C M01
+ (p8) cmp.eq.or p9, p0 = LIM, w1 C M I
+ (p8) add w1 = INCR, w1 C M I
+ ;;
+.LL00: cmp.PRED p6, p0 = w2, u2 C M I
+ shrp x0 = w1, w0, 1 C I0
+ nop.b 0
+ ld8 u2 = [up], 8 C M01
+ ADDSUB w3 = u3, v3 C M I
+ br.cloop.dptk .Loop C B
+ ;;
+C *** MAIN LOOP END ***
+
+.Lskip: st8 [rp] = x3, 8 C M23
+ cmp.PRED p7, p0 = w3, u3 C M I
+ (p9) cmp.eq.or p6, p0 = LIM, w2 C M I
+ (p9) add w2 = INCR, w2 C M I
+ ;;
+.Lcj7: st8 [rp] = x0, 8 C M23
+ shrp x1 = w2, w1, 1 C I0
+ ADDSUB w0 = u0, v0 C M I
+ (p6) cmp.eq.or p7, p0 = LIM, w3 C M I
+ (p6) add w3 = INCR, w3 C M I
+ ;;
+.Lcj6: cmp.PRED p8, p0 = w0, u0 C M I
+ shrp x2 = w3, w2, 1 C I0
+ ADDSUB w1 = u1, v1 C M I
+ ;;
+ st8 [rp] = x1, 8 C M23
+ cmp.PRED p9, p0 = w1, u1 C M I
+ (p7) cmp.eq.or p8, p0 = LIM, w0 C M I
+ (p7) add w0 = INCR, w0 C M I
+ ;;
+.Lcj5: st8 [rp] = x2, 8 C M23
+ shrp x3 = w0, w3, 1 C I0
+ ADDSUB w2 = u2, v2 C M I
+ (p8) cmp.eq.or p9, p0 = LIM, w1 C M I
+ (p8) add w1 = INCR, w1 C M I
+ ;;
+.Lcj4: cmp.PRED p6, p0 = w2, u2 C M I
+ shrp x0 = w1, w0, 1 C I0
+ ;;
+ st8 [rp] = x3, 8 C M23
+ (p9) cmp.eq.or p6, p0 = LIM, w2 C M I
+ (p9) add w2 = INCR, w2 C M I
+ ;;
+.Lcj3: st8 [rp] = x0, 8 C M23
+ shrp x1 = w2, w1, 1 C I0
+ shr.u x2 = w2, 1 C I0
+ ;;
+.Lcj2: st8 [rp] = x1, 8 C M23
+ (p6) dep x2 = -1, x2, 63, 1 C I0
+ ;;
+.Lcj1: st8 [rp] = x2 C M23
+ mov.i ar.lc = r2 C I0
+ br.ret.sptk.many b0 C B
+EPILOGUE()
projects / msp430-gcc.git / blobdiff