| Eric Christopher | 7e0afd9 | 2011-07-26 23:39:23 +0000 | [diff] [blame] | 1 | /* RUN: %clang_cc1 %s -emit-llvm -triple x86_64-apple-darwin -o - | FileCheck %s |
| Eric Christopher | 3883e66 | 2011-07-26 22:17:02 +0000 | [diff] [blame] | 2 | |
| 3 | The FE must generate padding here both at the end of each PyG_Head and |
| 4 | between array elements. Reduced from Python. */ |
| 5 | |
| 6 | typedef union _gc_head { |
| 7 | struct { |
| 8 | union _gc_head *gc_next; |
| 9 | union _gc_head *gc_prev; |
| 10 | long gc_refs; |
| 11 | } gc; |
| 12 | int dummy __attribute__((aligned(16))); |
| 13 | } PyGC_Head; |
| 14 | |
| 15 | struct gc_generation { |
| 16 | PyGC_Head head; |
| 17 | int threshold; |
| 18 | int count; |
| 19 | }; |
| 20 | |
| 21 | #define GEN_HEAD(n) (&generations[n].head) |
| 22 | |
| 23 | // The idea is that there are 6 undefs in this structure initializer to cover |
| 24 | // the padding between elements. |
| 25 | // 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]* @generations, i32 0, i32 0, i32 0), %union._gc_head* getelementptr inbounds ([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* bitcast ([3 x %struct.gc_generation]* @generations to i8*), i64 48) to %union._gc_head*), %union._gc_head* bitcast (i8* getelementptr (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* bitcast ([3 x %struct.gc_generation]* @generations to i8*), i64 96) to %union._gc_head*), %union._gc_head* bitcast (i8* getelementptr (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 }] |
| 26 | /* linked lists of container objects */ |
| 27 | struct gc_generation generations[3] = { |
| 28 | /* PyGC_Head, threshold, count */ |
| 29 | {{{GEN_HEAD(0), GEN_HEAD(0), 0}}, 700, 0}, |
| 30 | {{{GEN_HEAD(1), GEN_HEAD(1), 0}}, 10, 0}, |
| 31 | {{{GEN_HEAD(2), GEN_HEAD(2), 0}}, 10, 0}, |
| 32 | }; |