diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c new file mode 100644 index 000000000..261880cc2 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c @@ -0,0 +1,20 @@ +/* { dg-do compile } */ +/* { dg-options "-O -fno-tree-fre -fdump-tree-cddce1" } */ + +int foo(int b) +{ + int a[128]; + a[b] = 1; + if (b) + { + b = 2; + a[2] = 0; + } + a[2] = 3; + return a[2] + b; +} + +/* Verify DCE removes all accesses to a but the last store and the + read from a[2]. */ +/* { dg-final { scan-tree-dump-times "a\\\[\[^\n\]\\\]" 2 "cddce1" } } */ +/* { dg-final { cleanup-tree-dump "cddce1" } } */ |