diff options
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/cse.c b/gcc/cse.c index 6c7aef31ecd..68fe7b04a92 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -9191,7 +9191,13 @@ delete_trivially_dead_insns (insns, nreg) else if (GET_CODE (SET_DEST (PATTERN (insn))) != REG || REGNO (SET_DEST (PATTERN (insn))) < FIRST_PSEUDO_REGISTER || counts[REGNO (SET_DEST (PATTERN (insn)))] != 0 - || side_effects_p (SET_SRC (PATTERN (insn)))) + || side_effects_p (SET_SRC (PATTERN (insn))) + /* An ADDRESSOF expression can turn into a use of the + internal arg pointer, so always consider the + internal arg pointer live. If it is truly dead, + flow will delete the initializing insn. */ + || (SET_DEST (PATTERN (insn)) + == current_function_internal_arg_pointer)) live_insn = 1; } else if (GET_CODE (PATTERN (insn)) == PARALLEL) |