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| author | Jakub Jelinek <jakub@redhat.com> | 2012-10-05 11:37:25 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2012-10-05 11:37:25 +0200 |
| commit | 440d347233baeb164433435f63fda2093e98cb6a (patch) | |
| tree | 53aad70f269552ef0dbc7184a9b6589dc2ac08d4 /gcc/testsuite/gcc.dg/tree-ssa/vrp85.c | |
| parent | 5e3e4fe8749caf4f90f41910458d094bc4519f69 (diff) | |
| download | gcc-440d347233baeb164433435f63fda2093e98cb6a.zip gcc-440d347233baeb164433435f63fda2093e98cb6a.tar.gz gcc-440d347233baeb164433435f63fda2093e98cb6a.tar.bz2 | |
re PR tree-optimization/54810 (VRP doesn't handle comparison of narrowing cast like comparison of BIT_AND_EXPR)
PR tree-optimization/54810
* tree-vrp.c (register_edge_assert_for_2): Handle
NAME = (unsigned) NAME2; if (NAME cmp CST) for
narrowing casts to unsigned integral type like
NAME = NAME2 & CST2; if (NAME cmp CST) where CST2
is the max value of the unsigned integral type.
* gcc.dg/tree-ssa/vrp85.c: New test.
From-SVN: r192115
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/vrp85.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/vrp85.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp85.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp85.c new file mode 100644 index 0000000..ad2b38d --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp85.c @@ -0,0 +1,40 @@ +/* PR tree-optimization/54810 */ +/* { dg-do link } */ +/* { dg-options "-O2 -fdump-tree-vrp1" } */ + +extern void link_error (void); + +#define T(n, ntype, wtype) \ +void \ +f##n (wtype s) \ +{ \ + if ((ntype) s == 0) \ + return; \ + if (s == 0) \ + link_error (); \ +} + +T(1, unsigned char, unsigned char) +T(2, unsigned char, unsigned short) +T(3, unsigned char, unsigned int) +T(4, unsigned char, unsigned long int) +T(5, unsigned char, unsigned long long int) +T(6, unsigned short int, unsigned short int) +T(7, unsigned short int, unsigned int) +T(8, unsigned short int, unsigned long int) +T(9, unsigned short int, unsigned long long int) +T(10, unsigned int, unsigned int) +T(11, unsigned int, unsigned long int) +T(12, unsigned int, unsigned long long int) +T(13, unsigned long int, unsigned long int) +T(14, unsigned long int, unsigned long long int) +T(15, unsigned long long int, unsigned long long int) + +int +main () +{ + return 0; +} + +/* { dg-final { scan-tree-dump-not "link_error" "vrp1"} } */ +/* { dg-final { cleanup-tree-dump "vrp1" } } */ |