diff options
Diffstat (limited to 'gcc/config/i386')
| -rw-r--r-- | gcc/config/i386/i386.cc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc index 4f8380c4..b172f71 100644 --- a/gcc/config/i386/i386.cc +++ b/gcc/config/i386/i386.cc @@ -458,6 +458,9 @@ int ix86_arch_specified; indirect thunk pushes the return address onto stack, destroying red-zone. + NB: Don't use red-zone for functions with no_caller_saved_registers + and 32 GPRs since 128-byte red-zone is too small for 31 GPRs. + TODO: If we can reserve the first 2 WORDs, for PUSH and, another for CALL, in red-zone, we can allow local indirect jumps with indirect thunk. */ @@ -467,6 +470,9 @@ ix86_using_red_zone (void) { return (TARGET_RED_ZONE && !TARGET_64BIT_MS_ABI + && (!TARGET_APX_EGPR + || (cfun->machine->call_saved_registers + != TYPE_NO_CALLER_SAVED_REGISTERS)) && (!cfun->machine->has_local_indirect_jump || cfun->machine->indirect_branch_type == indirect_branch_keep)); } |