diff options
author | Zancanaro; Carlo <czan8762@plang3.cs.usyd.edu.au> | 2012-09-24 09:58:17 +1000 |
---|---|---|
committer | Zancanaro; Carlo <czan8762@plang3.cs.usyd.edu.au> | 2012-09-24 09:58:17 +1000 |
commit | 222e2a7620e6520ffaf4fc4e69d79c18da31542e (patch) | |
tree | 7bfbc05bfa3b41c8f9d2e56d53a0bc3e310df239 /clang/test/CodeGen/union-init.c | |
parent | 3d206f03985b50beacae843d880bccdc91a9f424 (diff) |
Add the clang library to the repo (with some of my changes, too).
Diffstat (limited to 'clang/test/CodeGen/union-init.c')
-rw-r--r-- | clang/test/CodeGen/union-init.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/clang/test/CodeGen/union-init.c b/clang/test/CodeGen/union-init.c new file mode 100644 index 0000000..60906b5 --- /dev/null +++ b/clang/test/CodeGen/union-init.c @@ -0,0 +1,31 @@ +// RUN: %clang_cc1 -emit-llvm < %s -o - + +// A nice and complicated initialization example with unions from Python +typedef int Py_ssize_t; + +typedef union _gc_head { + struct { + union _gc_head *gc_next; + union _gc_head *gc_prev; + Py_ssize_t gc_refs; + } gc; + long double dummy; /* force worst-case alignment */ +} PyGC_Head; + +struct gc_generation { + PyGC_Head head; + int threshold; /* collection threshold */ + int count; /* count of allocations or collections of younger + generations */ +}; + +#define NUM_GENERATIONS 3 +#define GEN_HEAD(n) (&generations[n].head) + +/* linked lists of container objects */ +struct gc_generation generations[NUM_GENERATIONS] = { + /* PyGC_Head, threshold, count */ + {{{GEN_HEAD(0), GEN_HEAD(0), 0}}, 700, 0}, + {{{GEN_HEAD(1), GEN_HEAD(1), 0}}, 10, 0}, + {{{GEN_HEAD(2), GEN_HEAD(2), 0}}, 10, 0}, +}; |