diff options
| author | Hiroaki Etoh <etoh@cvs.openbsd.org> | 2003-06-20 08:42:13 +0000 |
|---|---|---|
| committer | Hiroaki Etoh <etoh@cvs.openbsd.org> | 2003-06-20 08:42:13 +0000 |
| commit | 07881a9c9946c91d6040bc5dd9d76ab85383232e (patch) | |
| tree | dedb06e1b8b69fc0011311d96c9a3a085707a924 | |
| parent | cb65c3b808a4ef1a09b2a82c29812e12d1e04f26 (diff) | |
To keep the frame pointer addressing for stack_protection,
skip the canonicalization; (minus A (plus B C)) to (minus (minus A B) C) where B is frame pointer and C is frame offset.
ok pvalchev@
| -rw-r--r-- | gnu/egcs/gcc/combine.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gnu/egcs/gcc/combine.c b/gnu/egcs/gcc/combine.c index 14ba11093a6..555604c3631 100644 --- a/gnu/egcs/gcc/combine.c +++ b/gnu/egcs/gcc/combine.c @@ -4060,7 +4060,10 @@ simplify_rtx (x, op0_mode, last, in_dest) /* Canonicalize (minus A (plus B C)) to (minus (minus A B) C) for integers. */ - if (GET_CODE (XEXP (x, 1)) == PLUS && INTEGRAL_MODE_P (mode)) + if (GET_CODE (XEXP (x, 1)) == PLUS && INTEGRAL_MODE_P (mode) + && (! (flag_propolice_protection + && XEXP (XEXP (x, 1), 0) == frame_pointer_rtx + && GET_CODE (XEXP (XEXP (x, 1), 1)) == CONST_INT))) return gen_binary (MINUS, mode, gen_binary (MINUS, mode, XEXP (x, 0), XEXP (XEXP (x, 1), 0)), |