| // Copyright 2005-2010 Intel Corporation. All Rights Reserved. |
| // |
| // This file is part of Threading Building Blocks. |
| // |
| // Threading Building Blocks is free software; you can redistribute it |
| // and/or modify it under the terms of the GNU General Public License |
| // version 2 as published by the Free Software Foundation. |
| // |
| // Threading Building Blocks 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 General Public License for more details. |
| // |
| // You should have received a copy of the GNU General Public License |
| // along with Threading Building Blocks; if not, write to the Free Software |
| // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| // |
| // As a special exception, you may use this file as part of a free software |
| // library without restriction. Specifically, if other files instantiate |
| // templates or use macros or inline functions from this file, or you compile |
| // this file and link it with other files to produce an executable, this |
| // file does not by itself cause the resulting executable to be covered by |
| // the GNU General Public License. This exception does not however |
| // invalidate any other reasons why the executable file might be covered by |
| // the GNU General Public License. |
| |
| // Support for class ConcurrentVector |
| .section .text |
| .align 16 |
| // unsigned long __TBB_machine_lg( unsigned long x ); |
| // r32 = x |
| .proc __TBB_machine_lg# |
| .global __TBB_machine_lg# |
| __TBB_machine_lg: |
| shr r16=r32,1 // .x |
| ;; |
| shr r17=r32,2 // ..x |
| or r32=r32,r16 // xx |
| ;; |
| shr r16=r32,3 // ...xx |
| or r32=r32,r17 // xxx |
| ;; |
| shr r17=r32,5 // .....xxx |
| or r32=r32,r16 // xxxxx |
| ;; |
| shr r16=r32,8 // ........xxxxx |
| or r32=r32,r17 // xxxxxxxx |
| ;; |
| shr r17=r32,13 |
| or r32=r32,r16 // 13x |
| ;; |
| shr r16=r32,21 |
| or r32=r32,r17 // 21x |
| ;; |
| shr r17=r32,34 |
| or r32=r32,r16 // 34x |
| ;; |
| shr r16=r32,55 |
| or r32=r32,r17 // 55x |
| ;; |
| or r32=r32,r16 // 64x |
| ;; |
| popcnt r8=r32 |
| ;; |
| add r8=-1,r8 |
| br.ret.sptk.many b0 |
| .endp __TBB_machine_lg# |
