--- /dev/null
+dnl IA-64 mpn_popcount -- mpn population count.
+
+dnl Copyright 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation,
+dnl 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: 1.5
+C Itanium 2: 1
+
+C INPUT PARAMETERS
+define(`up', `r32')
+define(`n', `r33')
+
+define(`u0',`r16') define(`u1',`r17') define(`u2',`r18') define(`u3',`r19')
+define(`c0',`r28') define(`c1',`r29') define(`c2',`r30') define(`c3',`r31')
+define(`s',`r8')
+
+
+ASM_START()
+PROLOGUE(mpn_popcount)
+ .prologue
+ifdef(`HAVE_ABI_32',
+` addp4 up = 0, up C M I
+ zxt4 n = n C I
+ ;;
+')
+
+ {.mmi; add r9 = 512, up C prefetch pointer M I
+ ld8 r10 = [up], 8 C load first limb M01
+ mov.i r2 = ar.lc C save ar.lc I0
+}{.mmi; and r14 = 3, n C M I
+ cmp.lt p15, p14 = 4, n C small count? M I
+ add n = -5, 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 u1 = [up], 8 C M01
+ shr.u n = n, 2 C I0
+ mov s = 0 C M I
+ ;;
+ ld8 u2 = [up], 8 C M01
+ popcnt c0 = r10 C I0
+ mov.i ar.lc = n C I0
+ ;;
+ ld8 u3 = [up], 8 C M01
+ popcnt c1 = u1 C I0
+ (p15) br.cond.dptk .grt4 C B
+ ;;
+ nop.m 0 C -
+ nop.m 0 C -
+ popcnt c2 = u2 C I0
+ ;;
+ mov s = c0 C M I
+ popcnt c3 = u3 C I0
+ br .Lcj4 C B
+
+.grt4: ld8 u0 = [up], 8 C M01
+ popcnt c2 = u2 C I0
+ br .LL00 C B
+
+
+.Lb01:
+ popcnt s = r10 C I0
+ (p14) br.ret.sptk.many b0 C B
+
+.grt1: ld8 u0 = [up], 8 C M01
+ shr.u n = n, 2 C I0
+ ;;
+ ld8 u1 = [up], 8 C M01
+ mov.i ar.lc = n C I0
+ ;;
+ ld8 u2 = [up], 8 C M01
+ popcnt c0 = u0 C I0
+ mov c3 = 0 C I0
+
+ ;;
+ ld8 u3 = [up], 8 C M01
+ popcnt c1 = u1 C I0
+ br.cloop.dptk .Loop C B
+ br .Lend C B
+
+
+.Lb10: ld8 u3 = [up], 8 C M01
+ shr.u n = n, 2 C I0
+ (p15) br.cond.dptk .grt2 C B
+
+ popcnt s = r10 C I0
+ ;;
+ popcnt c3 = u3 C I0
+ br .Lcj2 C B
+
+.grt2: ld8 u0 = [up], 8 C M01
+ mov.i ar.lc = n C I0
+ popcnt c2 = r10 C I0
+ ;;
+ ld8 u1 = [up], 8 C M01
+ popcnt c3 = u3 C I0
+ mov s = 0 C M I
+ ;;
+ ld8 u2 = [up], 8 C M01
+ popcnt c0 = u0 C I0
+ br .LL10 C B
+
+
+.Lb11: ld8 u2 = [up], 8 C M01
+ shr.u n = n, 2 C I0
+ mov s = 0 C M I
+ ;;
+ ld8 u3 = [up], 8 C M01
+ popcnt s = r10 C I0
+ (p15) br.cond.dptk .grt3 C B
+
+ popcnt c2 = u2 C I0
+ ;;
+ popcnt c3 = u3 C I0
+ br .Lcj3 C B
+
+.grt3: ld8 u0 = [up], 8 C M01
+ popcnt c2 = u2 C I0
+ mov.i ar.lc = n C I0
+ mov c1 = 0
+ ;;
+ ld8 u1 = [up], 8 C M01
+ popcnt c3 = u3 C I0
+ br .LL11 C B
+
+
+.Loop: ld8 u0 = [up], 8 C M01
+ popcnt c2 = u2 C I0
+ add s = s, c3 C M I
+ ;;
+.LL00: ld8 u1 = [up], 8 C M01
+ popcnt c3 = u3 C I0
+ add s = s, c0 C M I
+ ;;
+.LL11: ld8 u2 = [up], 8 C M01
+ popcnt c0 = u0 C I0
+ add s = s, c1 C M I
+ ;;
+.LL10: ld8 u3 = [up], 8 C M01
+ popcnt c1 = u1 C I0
+ add s = s, c2 C M I
+ lfetch [r9], 32 C M01
+ nop.m 0 C -
+ br.cloop.dptk .Loop C B
+ ;;
+
+.Lend: popcnt c2 = u2 C I0
+ add s = s, c3 C M I
+ ;;
+ popcnt c3 = u3 C I0
+ add s = s, c0 C M I
+ ;;
+.Lcj4: add s = s, c1 C M I
+ ;;
+.Lcj3: add s = s, c2 C M I
+ ;;
+.Lcj2: add s = s, c3 C M I
+ mov.i ar.lc = r2 C I0
+ br.ret.sptk.many b0 C B
+EPILOGUE()
+ASM_END()
projects / msp430-gcc.git / blobdiff