From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/CodeGen/union-init.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 clang/test/CodeGen/union-init.c (limited to 'clang/test/CodeGen/union-init.c') 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}, +}; -- cgit v1.2.3