// Copyright (c) 2005-2019 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the 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#
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