https://llvm.org/bugs/show_bug.cgi?id=30693
Bug ID: 30693
Summary: AVX512 Segfault: alignment incorrect for relative
addressing
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: roland.sch...@intel.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Steps to reproduce:
git clone -b clang https://github.com/rolandschulz/gromacs.git
cd gromacs
mkdir build
cd build
FLAGS=-g; CFLAGS=$FLAGS CXXFLAGS=$FLAGS CC=clang CXX=clang++ cmake .. -GNinja
-DGMX_SIMD=AVX_512_KNL -DGMX_BUILD_HELP=OFF -DBUILD_SHARED_LIBS=no
-DGMX_HWLOC=no -DGMX_OPENMP=no
ninja mdrun-test
./bin/mdrun-test
--gtest_filter=MdrunCanWrite/Trajectories.ThatDifferInNstxout/0
It segfaults on
0x00000000009f4622 <+370>: vmovdqa 0x5b6fa(%rip),%xmm7 # 0xa4fd2
That relative address is not aligned to 16 and thus segfaults.
Sorry I have no idea how to produce a small test case for this.
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