diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/structopt-2.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/structopt-2.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/structopt-2.c b/gcc/testsuite/gcc.dg/tree-ssa/structopt-2.c new file mode 100644 index 000000000..b4d28257e --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/structopt-2.c @@ -0,0 +1,46 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-optimized -fno-tree-sra" } */ + +/* Even without SRA being enabled, we should be able to eliminate every structure store and load here. */ +extern void foo (const int); +int main(void) +{ + struct a + { + int e; + int f; + int g; + } a; + struct a b; + int x, c; + a.e = 50; + a.f = 9; + a.g = a.e * a.f; + foo (a.f); + foo (a.g); + x = a.f; + c = a.e; + foo (x); + foo (c); + a.e = 5; + a.f = 40; + a.g = 90; + foo (a.e); + foo (a.f); + foo (a.g); + c = a.f; + foo (c); + b.e = 9; + a.e = b.e + 1 * c; + a.f = 30; + foo (a.e); + foo (a.f); + x = a.e * a.f; + foo (x); + +} +/* { dg-final { scan-tree-dump-times "a.e" 0 "optimized" } } */ +/* { dg-final { scan-tree-dump-times "a.f" 0 "optimized" } } */ +/* { dg-final { scan-tree-dump-times "a.g" 0 "optimized" } } */ +/* { dg-final { scan-tree-dump-times "b.e" 0 "optimized" } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ |