diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/loop-18.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/loop-18.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/loop-18.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/loop-18.c new file mode 100644 index 000000000..ca75db941 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/loop-18.c @@ -0,0 +1,24 @@ +/* A test for # of iterations estimation. We know that I does not overflow, + thus we can perform strength reduction (even though the 32-bit variable + i is first extended to 64-bit type). */ + +/* { dg-options "-O2 -fdump-tree-optimized" } */ +/* { dg-do compile { target x86_64-*-* } } */ + +unsigned bar(void); + +void foo(unsigned *p, unsigned n) +{ + unsigned i; + + for (i = 0; i < n; i++) + p[i] = bar (); +} + +/* 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" } } */ |