diff options
| author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
|---|---|---|
| committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
| commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
| tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20111227-2.c | |
| parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
| download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip | |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20111227-2.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20111227-2.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20111227-2.c b/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20111227-2.c new file mode 100644 index 000000000..692c947e9 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20111227-2.c @@ -0,0 +1,44 @@ +/* Testcase derived from 20111227-1.c to ensure that REE is combining + redundant zero extends with zero extend to wider mode. */ +/* { dg-options "-fdump-rtl-ree -O" } */ +extern void abort (void); + +unsigned short s; +unsigned int i; +unsigned long l; +unsigned char v = -1; + +void __attribute__((noinline,noclone)) +bar (int t) +{ + if (t == 2 && s != 0xff) + abort (); + if (t == 1 && i != 0xff) + abort (); + if (t == 0 && l != 0xff) + abort (); +} + +void __attribute__((noinline,noclone)) +foo (unsigned char *a, int t) +{ + unsigned char r = v; + + if (t == 2) + s = (unsigned short) r; + else if (t == 1) + i = (unsigned int) r; + else if (t == 0) + l = (unsigned 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" } } */ |