Problem with runing simulator with riscv-tests

[artykisa]

Hello, I'm using riscv simualtor from mipt-mips (github.com/MIPT-ILab/) to run tests from riscv-tests(github.com/MIPT-ILab/riscv-tests ) also with the help of riscv-gnu-toolchain (github.com/riscv/riscv-gnu-toolchain).

How i have builded simulator:
git clone --recursive https://github.com/MIPT-ILab/mipt-mips.git

cmake /path/to/mipt-mips/simulator -G "Ninja"
sudo ninja

How i have builded tests:
In my riscv-gnu-toolchain directory: git clone https://github.com/riscv/riscv-tests
cd riscv-tests
git submodule update --init --recursive
autoconf
./configure --prefix=$RISCV/target
sudo make
sudo make install

I'm running tests in --bp-mode
So my simulator works fine with p-format tests, but there are not too much instructions(like ~880). Also I've tried to run v-format tests, but they give me the same results in percents of mispredict despite various --bp-mode and tests, I dont think that it's good.
Then I've decided to try tests from benchmarks like qsort, so i've run them with this command from my build directory
./mipt-mips --isa riscv64 -b ~/riscv-gnu-toolchain/riscv-tests/bencmarks/qsort.riscv (path to test) --bp-mode always_taken --mars
After that i have this output

So my problem is that i cant run riscv-tests from benchmarks and want to find tests with a lot of instructions that will work fine in --bp-mode

[pavelkryukov]

After that i have this output

This happens because we have not fixed #1076 yet, assuming next instruction is always PC + 4, while for compressed instructions it should be PC + 2.
You may try to disable compressed instructions in GCC/Assembler: look for -march=rv64abcdefgh string in Makefile and remove c letter.

give me the same results in percents of mispredict despite various --bp-mode and tests,

Current assignment for MIPT students is to implement benchmarks sensitive to different branch prediction modes,
I can drop something I have in a private repository, so it won't be exposed before our deadlines :-)

[nougat11]

You may try to disable compressed instructions in GCC/Assembler: look for -march=rv64abcdefgh string in Makefile and remove c letter.

I didn't find this string in Makefile, also tried to write this as a flag, but it says that there is an error.
So maybe you can tell me in which makefile i should find that line or how to run this command with flag?

[pavelkryukov]

Sorry, I was not precise, this string was a bad example.
In shot, RISC-V ISA has few sub-sets, and each subset is encoded with a single letter: A for atomic, B for bit manipulations, C for compressed, etc.

To disable compressed instructions, add to this line:
https://github.com/riscv/riscv-tests/blob/58eb560a84ea2d6a392f7e75bba649a0c5946617/benchmarks/Makefile#L40

following options:
-march=rv64im -mabi=lp64

[avl-bsuir]

I will add few points that may clarify the current state. I succeeded with running those tests. Unfortunately, not all benchmarks could be compiled with proposed options. Those are benchamrks that use floating point instructions or atomic instructions. I could not find any option to exclude them from build, so I fixed Makefile a bit. You may find patch attached.
patch.txt

Unfortunately, single test fails.