The gcc-7-branch version of the patch, tested same as the mainline patch.
Committed.
gcc/
* config/riscv/linux.h (ICACHE_FLUSH_FUNC): New.
* config/riscv/riscv.md (clear_cache): Use it.
---
gcc/config/riscv/linux.h | 2 ++
gcc/config/riscv/riscv.md | 6 ++
2 files cha
The RISC-V ISA defines fence.i as flushing the icache on the current hart
(hardware thread, aka core) and not on any other hart. If the linux kernel
moves a process to a different hart in between writes to code, and the
following fence.i instruction, then the result is indeterminate. To fix this,
