From 15d0da8cb36f5c96a3c649d29a2e2623e995cd49 Mon Sep 17 00:00:00 2001 From: Will Schmidt Date: Wed, 22 Aug 2012 11:04:42 -0500 Subject: Add versions of wcscpy, wcschr, wcsrchr for power6/power7. Initially based on the versions found in wcsmbs/* ; these files have been changed by hand unrolling, and adding some additional variables to allow some read-ahead to occur, which then relieves some of the wait-for-increment/wait-for-load/wait-for-compare-results pressure that was slowing down every iteration through the while-loop. For 64-bit Power7, These changes give an approx 20% throughput boost for the wcschr and wcsrchr functions; and approx 40% boost for the wcscpy function. 32-bit improvements appear to be slightly better with ~ %30 and ~ %45 respectively. Results for Power6 closely match those for power7. --- sysdeps/powerpc/powerpc32/power6/wcschr.c | 88 ++++++++++++++++++++++++ sysdeps/powerpc/powerpc32/power6/wcscpy.c | 104 +++++++++++++++++++++++++++++ sysdeps/powerpc/powerpc32/power6/wcsrchr.c | 88 ++++++++++++++++++++++++ 3 files changed, 280 insertions(+) create mode 100644 sysdeps/powerpc/powerpc32/power6/wcschr.c create mode 100644 sysdeps/powerpc/powerpc32/power6/wcscpy.c create mode 100644 sysdeps/powerpc/powerpc32/power6/wcsrchr.c (limited to 'sysdeps/powerpc/powerpc32/power6') diff --git a/sysdeps/powerpc/powerpc32/power6/wcschr.c b/sysdeps/powerpc/powerpc32/power6/wcschr.c new file mode 100644 index 0000000000..a981427f72 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power6/wcschr.c @@ -0,0 +1,88 @@ +/* wcschr.c - Wide Character Search for powerpc32/power6. + Copyright (C) 2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include + + +/* Find the first occurrence of WC in WCS. */ +wchar_t * +wcschr (wcs, wc) + register const wchar_t *wcs; + register const wchar_t wc; +{ + register const wchar_t *wcs2 = wcs + 1; + + if (*wcs == wc) + return (wchar_t *) wcs; + if (*wcs == L'\0') + return NULL; + + do + { + wcs += 2; + + if (*wcs2 == wc) + return (wchar_t *) wcs2; + if (*wcs2 == L'\0') + return NULL; + wcs2 += 2; + + if (*wcs == wc) + return (wchar_t *) wcs; + if (*wcs == L'\0') + return NULL; + wcs += 2; + + if (*wcs2 == wc) + return (wchar_t *) wcs2; + if (*wcs2 == L'\0') + return NULL; + wcs2 += 2; + + if (*wcs == wc) + return (wchar_t *) wcs; + if (*wcs == L'\0') + return NULL; + wcs += 2; + + if (*wcs2 == wc) + return (wchar_t *) wcs2; + if (*wcs2 == L'\0') + return NULL; + wcs2 += 2; + + if (*wcs == wc) + return (wchar_t *) wcs; + if (*wcs == L'\0') + return NULL; + wcs += 2; + + if (*wcs2 == wc) + return (wchar_t *) wcs2; + if (*wcs2 == L'\0') + return NULL; + wcs2 += 2; + + if (*wcs == wc) + return (wchar_t *) wcs; + } + while (*wcs != L'\0'); + + return NULL; +} +libc_hidden_def (wcschr) diff --git a/sysdeps/powerpc/powerpc32/power6/wcscpy.c b/sysdeps/powerpc/powerpc32/power6/wcscpy.c new file mode 100644 index 0000000000..9bd907788e --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power6/wcscpy.c @@ -0,0 +1,104 @@ +/* wcscpy.c - Wide Character Copy for powerpc32/power6. + Copyright (C) 2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include +#include + + +/* Copy SRC to DEST. */ +wchar_t * +wcscpy (dest, src) + wchar_t *dest; + const wchar_t *src; +{ + wint_t c,d; + wchar_t *wcp, *wcp2; + + if (__alignof__ (wchar_t) >= sizeof (wchar_t)) + { + const ptrdiff_t off = dest - src; + + wcp = (wchar_t *) src; + wcp2 = wcp + 1 ; + + do + { + d = *wcp; + wcp[off] = d; + if (d == L'\0') + return dest; + wcp += 2; + + c = *wcp2; + wcp2[off] = c; + if (c == L'\0') + return dest; + wcp2 += 2; + + d = *wcp; + wcp[off] = d; + if (d == L'\0') + return dest; + wcp += 2; + + c = *wcp2; + wcp2[off] = c; + if (c == L'\0') + return dest; + wcp2 += 2; + + d = *wcp; + wcp[off] = d; + if (d == L'\0') + return dest; + wcp += 2; + + c = *wcp2; + wcp2[off] = c; + if (c == L'\0') + return dest; + wcp2 += 2; + + d = *wcp; + wcp[off] = d; + if (d == L'\0') + return dest; + wcp += 2; + + c = *wcp2; + wcp2[off] = c; + if (c == L'\0') + return dest; + wcp2 += 2; + } + while (c != L'\0'); + + } + else + { + wcp = dest; + + do + { + c = *src++; + *wcp++ = c; + } + while (c != L'\0'); + } + return dest; +} diff --git a/sysdeps/powerpc/powerpc32/power6/wcsrchr.c b/sysdeps/powerpc/powerpc32/power6/wcsrchr.c new file mode 100644 index 0000000000..f9db8f8b53 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/power6/wcsrchr.c @@ -0,0 +1,88 @@ +/* wcsrchr.c - Wide Character Reverse Search for powerpc32/power6. + Copyright (C) 2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include + + +/* Find the last occurrence of WC in WCS. */ +wchar_t * +wcsrchr (wcs, wc) + register const wchar_t *wcs; + register const wchar_t wc; +{ + register const wchar_t *wcs2 = wcs + 1; + const wchar_t *retval = NULL; + + if (*wcs == wc) + retval = wcs; + + if (*wcs == L'\0') return (wchar_t *) retval; + + do + { + wcs+=2; + + if (*wcs2 == wc) + retval = wcs2; + if (*wcs2 == L'\0') + return (wchar_t *) retval; + wcs2+=2; + + if (*wcs == wc) + retval = wcs; + if (*wcs == L'\0') + return (wchar_t *) retval; + wcs+=2; + + if (*wcs2 == wc) + retval = wcs2; + if (*wcs2 == L'\0') + return (wchar_t *) retval; + wcs2+=2; + + if (*wcs == wc) + retval = wcs; + if (*wcs == L'\0') + return (wchar_t *) retval; + wcs+=2; + + if (*wcs2 == wc) + retval = wcs2; + if (*wcs2 == L'\0') + return (wchar_t *) retval; + wcs2+=2; + + if (*wcs == wc) + retval = wcs; + if (*wcs == L'\0') + return (wchar_t *) retval; + wcs+=2; + + if (*wcs2 == wc) + retval = wcs2; + if (*wcs2 == L'\0') + return (wchar_t *) retval; + wcs2+=2; + + if (*wcs == wc) + retval = wcs; + } + while (*wcs != L'\0'); + + return (wchar_t *) retval; +} -- cgit 1.4.1