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| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-05-11 08:29:40 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-05-11 08:29:40 +0000 |
| commit | 219dad967d620f9b4ee558fb5ba3bf5fb8c4cabc (patch) | |
| tree | 17f244ccd429a0d120041c3e273cdd7bc9688376 /gcc/testsuite/gcc.dg/tree-ssa/foldcast-1.c | |
| parent | 26ff41d3eb1a3d9514af82a7bccd9dfc1fb49eb4 (diff) | |
| download | gcc-219dad967d620f9b4ee558fb5ba3bf5fb8c4cabc.tar.gz | |
2006-05-11 Richard Guenther <rguenther@suse.de>
PR middle-end/27529
* fold-const.c (fold_unary): Handle intermediate conversion
to a pointer type like intermediate conversion to an integer
type in folding of (T1)(T2)var to var.
Match the code to the comment in the final conversion for
(T1)(T2)var to (T1)var regarding to type precision. Rather
than disallow T1 being of pointer type, assert that both T1
and var are of pointer type or not. Make sure not to fall
over the frontends lazyness wrt array to pointer decay though.
* gcc.dg/tree-ssa/foldcast-1.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@113692 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/foldcast-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/foldcast-1.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/foldcast-1.c b/gcc/testsuite/gcc.dg/tree-ssa/foldcast-1.c new file mode 100644 index 00000000000..a0626ea10d9 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/foldcast-1.c @@ -0,0 +1,16 @@ +/* { dg-do "compile" } */ +/* { dg-options "-fdump-tree-original" } */ + +typedef int ssize_t __attribute__((mode(pointer))); +ssize_t foo (ssize_t x) +{ + return (ssize_t)(char *)x; +} + +char *bar (char *x) +{ + return (char *)(ssize_t)x; +} + +/* { dg-final { scan-tree-dump-times "return x;" 2 "original" } } */ +/* { dg-final { cleanup-tree-dump "original" } } */ |