diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-25.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-25.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-25.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-25.c new file mode 100644 index 000000000..32b068275 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-25.c @@ -0,0 +1,23 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-pre-stats" } */ + +struct X { int i; }; + +int foo (int x) +{ + struct X a; + struct X b; + struct X *p; + a.i = 1; + b.i = 2; + if (x) + p = &a; + else + p = &b; + return p->i; +} + +/* We should eliminate the load from p for a PHI node with values 1 and 2. */ + +/* { dg-final { scan-tree-dump "Eliminated: 1" "pre" } } */ +/* { dg-final { cleanup-tree-dump "pre" } } */ |