| /* RUN: %clang_cc1 %s -emit-llvm -triple x86_64-apple-darwin -o - | FileCheck %s |
| |
| The FE must generate padding here both at the end of each PyG_Head and |
| between array elements. Reduced from Python. */ |
| |
| typedef union _gc_head { |
| struct { |
| union _gc_head *gc_next; |
| union _gc_head *gc_prev; |
| long gc_refs; |
| } gc; |
| int dummy __attribute__((aligned(16))); |
| } PyGC_Head; |
| |
| struct gc_generation { |
| PyGC_Head head; |
| int threshold; |
| int count; |
| }; |
| |
| #define GEN_HEAD(n) (&generations[n].head) |
| |
| // The idea is that there are 6 undefs in this structure initializer to cover |
| // the padding between elements. |
| // CHECK: @generations = global [3 x %struct.gc_generation] [%struct.gc_generation { %union._gc_head { %struct.anon { %union._gc_head* getelementptr inbounds ([3 x %struct.gc_generation], [3 x %struct.gc_generation]* @generations, i32 0, i32 0, i32 0), %union._gc_head* getelementptr inbounds ([3 x %struct.gc_generation], [3 x %struct.gc_generation]* @generations, i32 0, i32 0, i32 0), i64 0 }, [8 x i8] undef }, i32 700, i32 0, [8 x i8] undef }, %struct.gc_generation { %union._gc_head { %struct.anon { %union._gc_head* bitcast (i8* getelementptr (i8, i8* bitcast ([3 x %struct.gc_generation]* @generations to i8*), i64 48) to %union._gc_head*), %union._gc_head* bitcast (i8* getelementptr (i8, i8* bitcast ([3 x %struct.gc_generation]* @generations to i8*), i64 48) to %union._gc_head*), i64 0 }, [8 x i8] undef }, i32 10, i32 0, [8 x i8] undef }, %struct.gc_generation { %union._gc_head { %struct.anon { %union._gc_head* bitcast (i8* getelementptr (i8, i8* bitcast ([3 x %struct.gc_generation]* @generations to i8*), i64 96) to %union._gc_head*), %union._gc_head* bitcast (i8* getelementptr (i8, i8* bitcast ([3 x %struct.gc_generation]* @generations to i8*), i64 96) to %union._gc_head*), i64 0 }, [8 x i8] undef }, i32 10, i32 0, [8 x i8] undef }] |
| /* linked lists of container objects */ |
| struct gc_generation generations[3] = { |
| /* 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}, |
| }; |
