diff options
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index ca475ff..fd3dec4 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -2755,6 +2755,13 @@ nonoverlapping_memrefs_p (const_rtx x, const_rtx y, bool loop_invariant) || TREE_CODE (expry) == CONST_DECL) return 1; + /* If either of the decls doesn't have DECL_RTL set (e.g. marked as + living in multiple places), we can't tell anything. Exception + are FUNCTION_DECLs for which we can create DECL_RTL on demand. */ + if ((!DECL_RTL_SET_P (exprx) && TREE_CODE (exprx) != FUNCTION_DECL) + || (!DECL_RTL_SET_P (expry) && TREE_CODE (expry) != FUNCTION_DECL)) + return 0; + rtlx = DECL_RTL (exprx); rtly = DECL_RTL (expry); |