diff options
Diffstat (limited to 'gcc-4.8.1/gcc/testsuite/gcc.dg/tree-ssa/pr19210-2.c')
-rw-r--r-- | gcc-4.8.1/gcc/testsuite/gcc.dg/tree-ssa/pr19210-2.c | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/gcc-4.8.1/gcc/testsuite/gcc.dg/tree-ssa/pr19210-2.c b/gcc-4.8.1/gcc/testsuite/gcc.dg/tree-ssa/pr19210-2.c deleted file mode 100644 index 9116e97ec..000000000 --- a/gcc-4.8.1/gcc/testsuite/gcc.dg/tree-ssa/pr19210-2.c +++ /dev/null @@ -1,29 +0,0 @@ -/* { dg-do compile } */ -/* { dg-options "-O2 -funsafe-loop-optimizations -Wunsafe-loop-optimizations" } */ -extern void g(void); - -void -f (unsigned n) -{ - unsigned k; - for(k = 0;k <= n;k++) /* { dg-warning "assuming.*not infinite" } */ - g(); - - for(k = 5;k <= n;k += 4) /* { dg-warning "assuming.*not overflow" } */ - g(); - - /* We used to get warning for this loop. However, since then # of iterations - analysis improved, and we can now prove that this loop does not verflow. - This is because the only case when it would overflow is if n = ~0 (since - ~0 is divisible by 5), and this cannot be the case, since when we got - here, the previous loop exited, thus there exists k > n. */ - for(k = 5;k <= n;k += 5) - g(); - - for(k = 4;k <= n;k += 5) /* { dg-warning "assuming.*not overflow" } */ - g(); - - for(k = 15;k >= n;k--) /* { dg-warning "assuming.*not infinite" } */ - g(); - -} |