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| author | Richard Guenther <rguenther@suse.de> | 2007-08-21 09:18:15 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2007-08-21 09:18:15 +0000 |
| commit | f7d1e0c6cb12146eaddeac1386e1a5b9394f5955 (patch) | |
| tree | da8009658e74e845d6bc8c65006d9ea505a606a8 /gcc/fold-const.c | |
| parent | 8015455a87e3e516d3238fb3231ab50214234289 (diff) | |
| download | gcc-f7d1e0c6cb12146eaddeac1386e1a5b9394f5955.zip gcc-f7d1e0c6cb12146eaddeac1386e1a5b9394f5955.tar.gz gcc-f7d1e0c6cb12146eaddeac1386e1a5b9394f5955.tar.bz2 | |
fold-const.c (fold_binary): Revert removing of index +p PTR
2007-08-21 Richard Guenther <rguenther@suse.de>
* fold-const.c (fold_binary): Revert removing of index +p PTR
* folding.
* gcc.dg/pointer-arith-10.c: New testcase.
From-SVN: r127660
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 8faf77d..33467eb 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -9528,6 +9528,13 @@ fold_binary (enum tree_code code, tree type, tree op0, tree op1) fold_convert (sizetype, arg1), fold_convert (sizetype, arg0))); + /* index +p PTR -> PTR +p index */ + if (POINTER_TYPE_P (TREE_TYPE (arg1)) + && INTEGRAL_TYPE_P (TREE_TYPE (arg0))) + return fold_build2 (POINTER_PLUS_EXPR, type, + fold_convert (type, arg1), + fold_convert (sizetype, arg0)); + /* (PTR +p B) +p A -> PTR +p (B + A) */ if (TREE_CODE (arg0) == POINTER_PLUS_EXPR) { |