[Bug c/114352] RISC-V: ICE when __attribute__((target("arch=+v")) and build with rv64gc -O3

[pan2.li at intel dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114352

--- Comment #1 from Li Pan <pan2.li at intel dot com> ---
Test GCC version:

riscv64-unknown-elf-gcc (GCC) 14.0.1 20240315 (experimental)
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