diff options
Diffstat (limited to 'erts/configure.ac')
| -rw-r--r-- | erts/configure.ac | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/erts/configure.ac b/erts/configure.ac index ab2ee78acd..a052c319ba 100644 --- a/erts/configure.ac +++ b/erts/configure.ac @@ -2855,7 +2855,26 @@ AS_IF([test ${enable_jit} != no], JIT_ARCH=x86 ;; arm64) - JIT_ARCH=arm + case "$OPSYS" in + win32|darwin) + # These platforms have dedicated system calls for clearing + # instruction cache, and don't require us to manually issue + # instruction barriers on all threads. + JIT_ARCH=arm + ;; + *) + # We need to use `DC CVAU`, `IC IVAU`, and `ISB SY` to clear + # instruction cache. These have already been tested as part of + # ETHR_CHK_GCC_ATOMIC_OPS([]). + + if test "$ethr_arm_isb_sy_instr_val$ethr_arm_dc_cvau_instr_val$ethr_arm_ic_ivau_instr_val" = "111"; then + JIT_ARCH=arm + else + enable_jit=no + AC_MSG_WARN([JIT disabled due to lack of cache-clearing instructions]) + fi + ;; + esac ;; *) if test ${enable_jit} = yes; then |