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| author | vries <vries@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-10-31 09:33:25 +0000 |
|---|---|---|
| committer | vries <vries@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-10-31 09:33:25 +0000 |
| commit | 5569a36f8123867c2ad6efd4effebc55ea778af7 (patch) | |
| tree | 8d3d2131443e37af6aa9321e23fd5a717c4b411f /gcc/fold-const.c | |
| parent | e83a804f79584275f87695b8a8e3c2e841016c91 (diff) | |
| download | gcc-5569a36f8123867c2ad6efd4effebc55ea778af7.tar.gz | |
Tune pointer-plus folding
2015-10-31 Tom de Vries <tom@codesourcery.com>
* fold-const.c (fold_unary_loc): Tune POINTER_PLUS_EXPR folding.
* gfortran.dg/assumed_type_2.f90: Update test.
* gfortran.dg/no_arg_check_2.f90: Same.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@229621 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index b9168f331ed..197ccfddddb 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -7755,14 +7755,12 @@ fold_unary_loc (location_t loc, enum tree_code code, tree type, tree op0) } } - /* Convert (T1)(X p+ Y) into ((T1)X p+ Y), for pointer type, - when one of the new casts will fold away. Conservatively we assume - that this happens when X or Y is NOP_EXPR or Y is INTEGER_CST. */ + /* Convert (T1)(X p+ Y) into ((T1)X p+ Y), for pointer type, when the new + cast (T1)X will fold away. We assume that this happens when X itself + is a cast. */ if (POINTER_TYPE_P (type) && TREE_CODE (arg0) == POINTER_PLUS_EXPR - && (TREE_CODE (TREE_OPERAND (arg0, 1)) == INTEGER_CST - || TREE_CODE (TREE_OPERAND (arg0, 0)) == NOP_EXPR - || TREE_CODE (TREE_OPERAND (arg0, 1)) == NOP_EXPR)) + && CONVERT_EXPR_P (TREE_OPERAND (arg0, 0))) { tree arg00 = TREE_OPERAND (arg0, 0); tree arg01 = TREE_OPERAND (arg0, 1); |