diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/loop-36.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/loop-36.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/loop-36.c b/gcc/testsuite/gcc.dg/tree-ssa/loop-36.c new file mode 100644 index 000000000..9e9173765 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/loop-36.c @@ -0,0 +1,22 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-dce2" } */ + +struct X { float array[2]; }; + +struct X a,b; + +float foobar () { + float s = 0; + unsigned int d; + struct X c; + for (d=0; d<2; ++d) + c.array[d] = a.array[d] * b.array[d]; + for (d=0; d<2; ++d) + s+=c.array[d]; + return s; +} + +/* The temporary structure should have been promoted to registers + by FRE after the loops have been unrolled by the early unrolling pass. */ +/* { dg-final { scan-tree-dump-not "c\.array" "dce2" } } */ +/* { dg-final { cleanup-tree-dump "dce2" } } */ |