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| author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
|---|---|---|
| committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
| commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
| tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.dg/tree-ssa/pr24287.c | |
| download | cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2 cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz | |
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Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/pr24287.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr24287.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr24287.c b/gcc/testsuite/gcc.dg/tree-ssa/pr24287.c new file mode 100644 index 000000000..c264fbcb2 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr24287.c @@ -0,0 +1,29 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-optimized" } */ +int g1(int); +int h(int *a, int *b)__attribute__((pure)); +void link_error(); + +/* The calls to link_error should be eliminated, since nothing escapes to + non-pure functions. */ +int g(void) +{ + int t = 0, t1 = 2; + /* ??? That's not true. The pointers escape to the integer return + value which we do not track in PTA. */ + int t2 = h(&t, &t1); + if (t != 0) + link_error (); + if (t1 != 2) + link_error (); + /* ??? And it would finally escape here even if we did. */ + g1(t2); + if (t != 0) + link_error (); + if (t1 != 2) + link_error (); + return t2 == 2; +} +/* We are allowed to optimize the first two link_error calls. */ +/* { dg-final { scan-tree-dump-times "link_error" 2 "optimized" } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ |