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| 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.dg/tree-ssa/pta-escape-3.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.dg/tree-ssa/pta-escape-3.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pta-escape-3.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pta-escape-3.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pta-escape-3.c new file mode 100644 index 000000000..870dcf6b1 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pta-escape-3.c @@ -0,0 +1,43 @@ +/* { dg-do run } */ +/* { dg-options "-O -fdump-tree-alias-details" } */ + +int *i; +void __attribute__((noinline)) +foo (void) +{ + *i = 1; +} +int **__attribute__((noinline,const)) +foobar (void) +{ + return &i; +} +int __attribute__((noinline)) +bar(int local_p) +{ + int x = 0; + int *j; + int **p; + if (local_p) + p = &j; + else + p = foobar(); + *p = &x; /* This makes x escape. */ + foo (); + return x; +} +extern void abort (void); +int main() +{ + int k = 2; + i = &k; + if (bar (1) != 0 || k != 1) + abort (); + if (bar (0) != 1) + abort (); + return 0; +} + +/* { dg-final { scan-tree-dump "ESCAPED = { NULL ESCAPED NONLOCAL x }" "alias" { target { ! keeps_null_pointer_checks } } } } */ +/* { dg-final { scan-tree-dump "ESCAPED = { ESCAPED NONLOCAL x }" "alias" { target { keeps_null_pointer_checks } } } } */ +/* { dg-final { cleanup-tree-dump "alias" } } */ |