diff options
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/gcc/function.c b/gcc/function.c index e9e99fe10e0..7560866df19 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -2622,10 +2622,14 @@ instantiate_decls (fndecl, valid_only) /* Process all parameters of the function. */ for (decl = DECL_ARGUMENTS (fndecl); decl; decl = TREE_CHAIN (decl)) { - instantiate_decl (DECL_RTL (decl), int_size_in_bytes (TREE_TYPE (decl)), - valid_only); - instantiate_decl (DECL_INCOMING_RTL (decl), - int_size_in_bytes (TREE_TYPE (decl)), valid_only); + int size = int_size_in_bytes (TREE_TYPE (decl)); + instantiate_decl (DECL_RTL (decl), size, valid_only); + + /* If the parameter was promoted, then the incoming RTL mode may be + larger than the declared type size. We must use the larger of + the two sizes. */ + size = MAX (GET_MODE_SIZE (GET_MODE (DECL_INCOMING_RTL (decl))), size); + instantiate_decl (DECL_INCOMING_RTL (decl), size, valid_only); } /* Now process all variables defined in the function or its subblocks. */ |