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llvm-project/compiler-rt/lib/builtins/hexagon/divsi3.S

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Add basic compiler-rt builtins support for hexagon. Differential Revision: https://reviews.llvm.org/D46364 llvm-svn: 331881
2018-05-09 22:44:54 +08:00
//===----------------------Hexagon builtin routine ------------------------===//
//
Update more file headers across all of the LLVM projects in the monorepo to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
2019-01-19 18:56:40 +08:00
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
Add basic compiler-rt builtins support for hexagon. Differential Revision: https://reviews.llvm.org/D46364 llvm-svn: 331881
2018-05-09 22:44:54 +08:00
//
//===----------------------------------------------------------------------===//
.macro FUNCTION_BEGIN name
.text
.p2align 5
.globl \name
.type \name, @function
\name:
.endm
.macro FUNCTION_END name
.size \name, . - \name
.endm
FUNCTION_BEGIN __hexagon_divsi3
{
p0 = cmp.ge(r0,#0)
p1 = cmp.ge(r1,#0)
r1 = abs(r0)
r2 = abs(r1)
}
{
r3 = cl0(r1)
r4 = cl0(r2)
r5 = sub(r1,r2)
p2 = cmp.gtu(r2,r1)
}
#if (__HEXAGON_ARCH__ == 60)
{
r0 = #0
p1 = xor(p0,p1)
p0 = cmp.gtu(r2,r5)
}
if (p2) jumpr r31
#else
{
r0 = #0
p1 = xor(p0,p1)
p0 = cmp.gtu(r2,r5)
if (p2) jumpr r31
}
#endif
{
r0 = mux(p1,#-1,#1)
if (p0) jumpr r31
r4 = sub(r4,r3)
r3 = #1
}
{
r0 = #0
r3:2 = vlslw(r3:2,r4)
loop0(1f,r4)
}
.falign
1:
{
p0 = cmp.gtu(r2,r1)
if (!p0.new) r1 = sub(r1,r2)
if (!p0.new) r0 = add(r0,r3)
r3:2 = vlsrw(r3:2,#1)
}:endloop0
{
p0 = cmp.gtu(r2,r1)
if (!p0.new) r0 = add(r0,r3)
if (!p1) jumpr r31
}
{
r0 = neg(r0)
jumpr r31
}
FUNCTION_END __hexagon_divsi3
.globl __qdsp_divsi3
.set __qdsp_divsi3, __hexagon_divsi3