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Initial Commit - Lesson 31 (Commit #1)

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Norman Lansing
2026-02-24 22:39:26 -05:00
commit 9591e7f503
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58
Plugins/GameLiftServerSDK/ThirdParty/concurrentqueue/benchmarks/tbb/ia64-gas/log2.s vendored Normal file
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// Copyright 2005-2014 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.
.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#