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| author | Richard Guenther <rguenther@suse.de> | 2007-08-21 08:23:50 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2007-08-21 08:23:50 +0000 |
| commit | 8015455a87e3e516d3238fb3231ab50214234289 (patch) | |
| tree | a051cfbef7bee98d995fa7021f0aa586f2b4e177 /gcc/fold-const.c | |
| parent | 66644666a511e85b232e586e27262ab0c90fc434 (diff) | |
| download | gcc-8015455a87e3e516d3238fb3231ab50214234289.zip gcc-8015455a87e3e516d3238fb3231ab50214234289.tar.gz gcc-8015455a87e3e516d3238fb3231ab50214234289.tar.bz2 | |
re PR middle-end/33122 (Mistaken type mismatch error prevents bootstrap)
2007-08-21 Richard Guenther <rguenther@suse.de>
PR middle-end/33122
* fold-const.c (fold_binary): Remove index +p PTR folding.
Fix types of POINTER_PLUS_EXPR generated by folding of
(PTR +p B) +p A.
* gcc.c-torture/compile/pr33122.c: New testcase.
From-SVN: r127659
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index d5d0f1e..8faf77d 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -9528,20 +9528,17 @@ 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) { tree inner; tree arg01 = fold_convert (sizetype, TREE_OPERAND (arg0, 1)); tree arg00 = TREE_OPERAND (arg0, 0); - inner = fold_build2 (PLUS_EXPR, sizetype, arg01, fold_convert (sizetype, arg1)); - return fold_build2 (POINTER_PLUS_EXPR, type, arg00, inner); + inner = fold_build2 (PLUS_EXPR, sizetype, + arg01, fold_convert (sizetype, arg1)); + return fold_convert (type, + fold_build2 (POINTER_PLUS_EXPR, + TREE_TYPE (arg00), arg00, inner)); } /* PTR_CST +p CST -> CST1 */ @@ -9559,6 +9556,7 @@ fold_binary (enum tree_code code, tree type, tree op0, tree op1) } return NULL_TREE; + case PLUS_EXPR: /* PTR + INT -> (INT)(PTR p+ INT) */ if (POINTER_TYPE_P (TREE_TYPE (arg0)) |