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Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/loop-16.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/loop-16.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/loop-16.c b/gcc/testsuite/gcc.dg/tree-ssa/loop-16.c new file mode 100644 index 000000000..50fa33330 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/loop-16.c @@ -0,0 +1,24 @@ +/* A test for # of iterations estimation. We know that the loop is executed + at most 100 times, thus the (32-bit) induction variables do not overflow, + and we may use 64-bit variable to represent them. */ + +/* { dg-options "-O2 -fdump-tree-optimized" } */ +/* { dg-do compile { target x86_64-*-* } } */ + +unsigned a[100]; + +void foo(unsigned n) +{ + unsigned i; + + for (i = 0; i < n; i++) + a[i] = 4 * i; +} + +/* Check that the memory reference was replaced with MEM, and that there is no + multiplication. */ + +/* { dg-final { scan-tree-dump-times "MEM" 1 "optimized" } } */ +/* { dg-final { scan-tree-dump-times "\[^\\n\\r\]*= \\* " 0 "optimized" } } */ + +/* { dg-final { cleanup-tree-dump "optimized" } } */ |