maleadt

SLP vectorizer compile-time reproducer (x86_64, -mcpu=haswell; same with the default CPU).

• keccak-round-reduced.ll: 333 lines, llvm-reduce output, one loop with 26 PHIs and xor/fshl chains. SLP vectorizes nothing in it and executes ~0.5e9 instructions.

• absorb-pre-slp.ll: the original function as it reaches the SLP pass at -O3 (dumped with -print-before=slp-vectorizer).

• absorb-unopt.ll: the original function before any optimization.

  opt -passes=slp-vectorizer -mcpu=haswell -time-passes keccak-round-reduced.ll -o /dev/null opt -passes=slp-vectorizer -mcpu=haswell -time-passes absorb-pre-slp.ll -o /dev/null opt -O3 -mcpu=haswell -time-passes absorb-unopt.ll -o /dev/null

for comparison: opt ... -slp-phi-vectorization-budget=0

maleadt

dummy

maleadt

empty

maleadt

#!/usr/bin/env python3
#
#===- git-runic - Runic Git Integration ----------------------*- python -*--===#
#
# Based on `git-clang-format`, which is part of the LLVM Project, under the
# Apache License v2.0 with LLVM Exceptions (see https://llvm.org/LICENSE.txt).
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#
#===------------------------------------------------------------------------===#

maleadt

GC error (probable corruption)
Allocations: 1078722668 (Pool: 1077025051; Big: 1697617); GC: 326
<?#0x7fb5614741f0::<circular reference @-1>>

thread 0 ptr queue:
~~~~~~~~~~ ptr queue top ~~~~~~~~~~
Task(next=nothing, queue=nothing, storage=Base.IdDict{Any, Any}(ht=Array{Any, (32,)}[...], count=0, ndel=6), donenotify=nothing, result=nothing, logstate=nothing, code=#<null>, rngState0=0xb9b65b60cba58093, rngState1=0x895111e6bfbbe017, rngState2=0x5d9292a04cee1ecf, rngState3=0x938cad6c397efe1b, rngState4=0x57f85d18e1c9877a, _state=0x00, sticky=true, _isexception=false, priority=0x0000)
==========
Task(next=nothing, queue=nothing, storage=Base.IdDict{Any, Any}(ht=Array{Any, (32,)}[

maleadt

//
// Generated by LLVM NVPTX Back-End
//

.version 6.3
.target sm_75, debug
.address_size 64

.extern .func  (.param .b32 func_retval0) vprintf
(

maleadt

/*
   Copyright 2010 Ken Domino

   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

maleadt

maleadt

build
Manifest.toml

maleadt

(gdb) f 0
#0  0x00007fffe06dee9d in zgemm_kernel_n_SANDYBRIDGE () from /home/tbesard/.cache/jl/installs/bin/linux/x64/1.7/julia-latest-linux64/bin/../lib/julia/libopenblas64_.so
(gdb) disassemble
Dump of assembler code for function zgemm_kernel_n_SANDYBRIDGE:
   0x00007fffe06dee00 <+0>:     sub    $0x80,%rsp
   0x00007fffe06dee07 <+7>:     mov    %rbx,(%rsp)
   0x00007fffe06dee0b <+11>:    mov    %rbp,0x8(%rsp)
   0x00007fffe06dee10 <+16>:    mov    %r12,0x10(%rsp)
   0x00007fffe06dee15 <+21>:    mov    %r13,0x18(%rsp)
   0x00007fffe06dee1a <+26>:    mov    %r14,0x20(%rsp)