diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/scev-cast.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/scev-cast.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/scev-cast.c b/gcc/testsuite/gcc.dg/tree-ssa/scev-cast.c new file mode 100644 index 000000000..2cf245460 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/scev-cast.c @@ -0,0 +1,26 @@ +/* A test for various conversions of chrecs. */ + +/* { dg-do compile { target i?86-*-* x86_64-*-* } } */ +/* { dg-options "-O2 -fdump-tree-optimized" } */ + +void blas (char xxx); +void blau (unsigned char xxx); + +void tst(void) +{ + unsigned i; + + for (i = 0; i < 128; i++) /* This cast to char has to be preserved. */ + blas ((char) i); + for (i = 0; i < 127; i++) /* And this one does not. */ + blas ((char) i); + for (i = 0; i < 255; i++) /* This cast is not necessary. */ + blau ((unsigned char) i); + for (i = 0; i < 256; i++) + blau ((unsigned char) i); /* This one is necessary. */ +} + +/* { dg-final { scan-tree-dump-times "= \\(unsigned char\\)" 1 "optimized" } } */ +/* { dg-final { scan-tree-dump-times "= \\(char\\)" 1 "optimized" } } */ + +/* { dg-final { cleanup-tree-dump "optimized" } } */ |