From af37f0dda914774e24ff384719f136795f76f2f4 Mon Sep 17 00:00:00 2001 From: Jeffrey A Law Date: Sun, 29 Aug 1999 01:42:28 +0000 Subject: jump.c (jump_optimize_1): Do not delete assignments to internal_arg_pointer. * jump.c (jump_optimize_1): Do not delete assignments to internal_arg_pointer. * cse.c (delete_trivially_dead_insns): Always consider a set of the internal_arg_pointer live. From-SVN: r28957 --- gcc/cse.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'gcc/cse.c') diff --git a/gcc/cse.c b/gcc/cse.c index 7a13a7b..8197e42 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -9215,7 +9215,13 @@ delete_trivially_dead_insns (insns, nreg) else if (GET_CODE (SET_DEST (elt)) != REG || REGNO (SET_DEST (elt)) < FIRST_PSEUDO_REGISTER || counts[REGNO (SET_DEST (elt))] != 0 - || side_effects_p (SET_SRC (elt))) + || side_effects_p (SET_SRC (elt)) + /* 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 (elt) + == current_function_internal_arg_pointer)) live_insn = 1; } else if (GET_CODE (elt) != CLOBBER && GET_CODE (elt) != USE) -- cgit v1.1