diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20111227-3.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20111227-3.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20111227-3.c b/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20111227-3.c new file mode 100644 index 000000000..d6726c473 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20111227-3.c @@ -0,0 +1,45 @@ +/* Testcase derived from 20111227-1.c to ensure that REE is combining + redundant sign extends with sign extend to wider mode. */ +/* { dg-options "-fdump-rtl-ree -O" } */ + +extern void abort (void); + +signed short s; +signed int i; +signed long l; +signed char v = -1; + +void __attribute__((noinline,noclone)) +bar (int t) +{ + if (t == 2 && s != -1) + abort (); + if (t == 1 && i != -1) + abort (); + if (t == 0 && l != -1) + abort (); +} + +void __attribute__((noinline,noclone)) +foo (signed char *a, int t) +{ + signed char r = v; + + if (t == 2) + s = (signed short) r; + else if (t == 1) + i = (signed int) r; + else if (t == 0) + l = (signed long) r; + bar (t); +} + +int main(void) +{ + foo (&v, 0); + foo (&v, 1); + foo (&v, 2); + return 0; +} +/* { dg-final { scan-rtl-dump "Elimination opportunities = 3 realized = 3" "ree" } } */ +/* { dg-final { cleanup-rtl-dump "ree" } } */ |