diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-01-13 22:21:25 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-01-13 22:21:25 +0000 |
| commit | d8fd6ef989e8335ddea4ccb63e498e2d632ce25a (patch) | |
| tree | 359c4896609ee7f80473c97fa28f6fc3f69ed247 /gcc/tree-ssa-ccp.c | |
| parent | 032ce1f8a732e97e0b4ef2a5ad5f2ee0a8d34ad9 (diff) | |
| download | gcc-d8fd6ef989e8335ddea4ccb63e498e2d632ce25a.tar.gz | |
2010-01-13 Richard Guenther <rguenther@suse.de>
PR tree-optimization/42730
* tree-ssa-ccp.c (maybe_fold_stmt_indirect): Add shortcut for
offset zero.
* gcc.c-torture/compile/pr42730.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@155872 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-ccp.c')
| -rw-r--r-- | gcc/tree-ssa-ccp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index f3f113c902f..b40dba36d08 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -2120,6 +2120,10 @@ maybe_fold_stmt_indirect (tree expr, tree base, tree offset) && is_gimple_min_invariant (DECL_INITIAL (base))) return DECL_INITIAL (base); + /* If there is no offset involved simply return the folded base. */ + if (integer_zerop (offset)) + return base; + /* Try folding *(&B+O) to B.X. */ t = maybe_fold_offset_to_reference (loc, base_addr, offset, TREE_TYPE (expr)); |