running the test clpeak results in an error llvm sigsegv

git clone https://github.com/krrishnarraj/clpeak.git
cd clpeak
mkdir build
cmake ..
make
./clpeak

Platform: Clover
  Device: AMD CAICOS (DRM 2.50.0 / 5.4.0-64-generic, LLVM 10.0.0)
    Driver version : 20.0.8 (Linux x64)
    Compute units : 2
    Clock frequency : 750 MHz
Segmentation fault (core dumped)

the problem is reproducible with video cards:
 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Caicos [Radeon HD 6450/7450/8450 / R5 230 OEM]
VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Seymour [Radeon HD 6400M/7400M Series]
Both video cards use radeon from mesa. With RX500 (mesa amdgpu) and R7 250 (radeonsi) clpeak work correctly

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: libllvm10:amd64 1:10.0.0-4ubuntu1~18.04.2
ProcVersionSignature: Ubuntu 5.4.0-64.72~18.04.1-generic 5.4.78
Uname: Linux 5.4.0-64-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.21
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri Jan 29 00:00:09 2021
InstallationDate: Installed on 2020-03-09 (325 days ago)
InstallationMedia: Xubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
SourcePackage: llvm-toolchain-10
UpgradeStatus: No upgrade log present (probably fresh install)