diff options
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index 5bcba14..4684a54 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -679,7 +679,12 @@ expand_builtin_setjmp_receiver (rtx receiver_label ATTRIBUTE_UNUSED) #ifdef HAVE_nonlocal_goto if (! HAVE_nonlocal_goto) #endif - emit_move_insn (virtual_stack_vars_rtx, hard_frame_pointer_rtx); + { + emit_move_insn (virtual_stack_vars_rtx, hard_frame_pointer_rtx); + /* This might change the hard frame pointer in ways that aren't + apparent to early optimization passes, so force a clobber. */ + emit_insn (gen_rtx_CLOBBER (VOIDmode, hard_frame_pointer_rtx)); + } #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM if (fixed_regs[ARG_POINTER_REGNUM]) |