Arm compiler 24.10 hangs when building GROMACS with -Ofast on SVE architecture

With the latest 24.10 Arm compilers, GROMACS  hangs when built with -Ofast on SVE architecture (A64fx in my case, but this is not limited to this platform)

The hang can be observed with the 2024 and 2025 series.

Arm compilers 24.04 works fine.

Arm compiler 24.10 works fine with -O3 but hangs with -Ofast.

I was able to trim down the code to this simple reproducer

reproducer.cpp

#include <arm_sve.h>

svfloat32_t foo(svbool_t mask, svfloat32_t x)
{

    svbool_t pg = svptrue_b32();
    return svsub_f32_x(pg, x, svadd_f32_x(pg, x, svsel_f32(mask, x, svdup_f32(0.0f))));
}

$ armclang++ --version
Arm C/C++/Fortran Compiler version 24.10 (build number 31) (based on LLVM 19.1.0)
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/arm/arm-linux-compiler-24.10_RHEL-8/llvm-bin

$ armclang++ -march=armv8.2-a+sve -c -O3 reproducer.cpp # OK

$ armclang++ -march=armv8.2-a+sve -c -Ofast reproducer.cpp # HANG