diff options
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index acfd934..8a20f46 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -2287,14 +2287,13 @@ true_dependence (const_rtx mem, enum machine_mode mem_mode, const_rtx x, Variant of true_dependence which assumes MEM has already been canonicalized (hence we no longer do that here). The mem_addr argument has been added, since true_dependence computed - this value prior to canonicalizing. */ + this value prior to canonicalizing. + If x_addr is non-NULL, it is used in preference of XEXP (x, 0). */ int canon_true_dependence (const_rtx mem, enum machine_mode mem_mode, rtx mem_addr, - const_rtx x, bool (*varies) (const_rtx, bool)) + const_rtx x, rtx x_addr, bool (*varies) (const_rtx, bool)) { - rtx x_addr; - if (MEM_VOLATILE_P (x) && MEM_VOLATILE_P (mem)) return 1; @@ -2320,7 +2319,8 @@ canon_true_dependence (const_rtx mem, enum machine_mode mem_mode, rtx mem_addr, if (nonoverlapping_memrefs_p (x, mem)) return 0; - x_addr = get_addr (XEXP (x, 0)); + if (! x_addr) + x_addr = get_addr (XEXP (x, 0)); if (! base_alias_check (x_addr, mem_addr, GET_MODE (x), mem_mode)) return 0; |