diff options
Diffstat (limited to 'gcc/tree-sra.c')
| -rw-r--r-- | gcc/tree-sra.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c index 86620e0..d32ef38 100644 --- a/gcc/tree-sra.c +++ b/gcc/tree-sra.c @@ -802,13 +802,15 @@ create_access (tree expr, gimple stmt, bool write) /* Return true iff TYPE is a RECORD_TYPE with fields that are either of gimple - register types or (recursively) records with only these two kinds of - fields. */ + register types or (recursively) records with only these two kinds of fields. + It also returns false if any of these records has a zero-size field as its + last field. */ static bool type_consists_of_records_p (tree type) { tree fld; + bool last_fld_has_zero_size = false; if (TREE_CODE (type) != RECORD_TYPE) return false; @@ -821,7 +823,13 @@ type_consists_of_records_p (tree type) if (!is_gimple_reg_type (ft) && !type_consists_of_records_p (ft)) return false; + + last_fld_has_zero_size = tree_low_cst (DECL_SIZE (fld), 1) == 0; } + + if (last_fld_has_zero_size) + return false; + return true; } |