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Diffstat (limited to 'gcc/tree-flow-inline.h')
| -rw-r--r-- | gcc/tree-flow-inline.h | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/gcc/tree-flow-inline.h b/gcc/tree-flow-inline.h index 94e1972..3f8e89d 100644 --- a/gcc/tree-flow-inline.h +++ b/gcc/tree-flow-inline.h @@ -1490,13 +1490,28 @@ get_subvar_at (tree var, unsigned HOST_WIDE_INT offset) /* Return true if V is a tree that we can have subvars for. Normally, this is any aggregate type, however, due to implementation - limitations ATM, we exclude array types as well. */ + limitations ATM, we exclude array types as well. Also complex + types which are not gimple registers can have subvars. */ static inline bool var_can_have_subvars (tree v) { - return (AGGREGATE_TYPE_P (TREE_TYPE (v)) && - TREE_CODE (TREE_TYPE (v)) != ARRAY_TYPE); + /* Non decls or memory tags can never have subvars. */ + if (!DECL_P (v) || MTAG_P (v)) + return false; + + /* Aggregates besides arrays can have subvars. */ + if (AGGREGATE_TYPE_P (TREE_TYPE (v)) + && TREE_CODE (TREE_TYPE (v)) != ARRAY_TYPE) + return true; + + /* Complex types variables which are not also a gimple register can + have subvars. */ + if (TREE_CODE (TREE_TYPE (v)) == COMPLEX_TYPE + && !DECL_COMPLEX_GIMPLE_REG_P (v)) + return true; + + return false; } |