| 1 | /* RUN: %clang_cc1 %s -emit-llvm -triple x86_64-apple-darwin -o - | FileCheck %s |
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| 2 | |
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| 3 | The FE must generate padding here both at the end of each PyG_Head and |
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| 4 | between array elements. Reduced from Python. */ |
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| 5 | |
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| 6 | typedef union _gc_head { |
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| 7 | struct { |
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| 8 | union _gc_head *gc_next; |
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| 9 | union _gc_head *gc_prev; |
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| 10 | long gc_refs; |
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| 11 | } gc; |
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| 12 | int dummy __attribute__((aligned(16))); |
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| 13 | } PyGC_Head; |
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| 14 | |
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| 15 | struct gc_generation { |
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| 16 | PyGC_Head head; |
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| 17 | int threshold; |
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| 18 | int count; |
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| 19 | }; |
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| 20 | |
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| 21 | #define GEN_HEAD(n) (&generations[n].head) |
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| 22 | |
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| 23 | // The idea is that there are 6 undefs in this structure initializer to cover |
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| 24 | // the padding between elements. |
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| 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], [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 }] |
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| 26 | /* linked lists of container objects */ |
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| 27 | struct gc_generation generations[3] = { |
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| 28 | /* PyGC_Head, threshold, count */ |
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| 29 | {{{GEN_HEAD(0), GEN_HEAD(0), 0}}, 700, 0}, |
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| 30 | {{{GEN_HEAD(1), GEN_HEAD(1), 0}}, 10, 0}, |
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| 31 | {{{GEN_HEAD(2), GEN_HEAD(2), 0}}, 10, 0}, |
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| 32 | }; |
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| 33 | |
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