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| author | Jan Hubicka <jh@suse.cz> | 2004-06-02 23:13:55 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2004-06-02 21:13:55 +0000 |
| commit | ce068299f5f38bc06a50f08f751fc4c23288f36f (patch) | |
| tree | f0824776b9bc1f6d3abf7f05e0e3cb8bf1fef7e7 | |
| parent | 415c974c0bd00f130e7795c3342bad4e3f014c6e (diff) | |
| download | gcc-ce068299f5f38bc06a50f08f751fc4c23288f36f.zip gcc-ce068299f5f38bc06a50f08f751fc4c23288f36f.tar.gz gcc-ce068299f5f38bc06a50f08f751fc4c23288f36f.tar.bz2 | |
tree-cfg.c (tree_find_edge_insert_loc): Allow inserting before return_stmt.
* tree-cfg.c (tree_find_edge_insert_loc): Allow inserting before
return_stmt.
From-SVN: r82586
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-cfg.c | 16 |
2 files changed, 21 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index bd63a97..b851e51 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-06-02 Jan Hubicka <jh@suse.cz> + + * tree-cfg.c (tree_find_edge_insert_loc): Allow inserting before + return_stmt. + 2004-06-02 Jason Merrill <jason@redhat.com> * Makefile.in (TAGS): Don't mess with c-parse.[ch]. diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index e53d71c..21277d8 100644 --- a/gcc/tree-cfg.c +++ b/gcc/tree-cfg.c @@ -2931,6 +2931,22 @@ tree_find_edge_insert_loc (edge e, block_stmt_iterator *bsi) tmp = bsi_stmt (*bsi); if (!stmt_ends_bb_p (tmp)) return true; + + /* Insert code just before returning the value. We may need to decompose + the return in the case it contains non-trivial operand. */ + if (TREE_CODE (tmp) == RETURN_EXPR) + { + tree op = TREE_OPERAND (tmp, 0); + if (!is_gimple_val (op)) + { + if (TREE_CODE (op) != MODIFY_EXPR) + abort (); + bsi_insert_before (bsi, op, BSI_NEW_STMT); + TREE_OPERAND (tmp, 0) = TREE_OPERAND (op, 0); + } + bsi_prev (bsi); + return true; + } } /* Otherwise, create a new basic block, and split this edge. */ |