32 lines
2.1 KiB
C
32 lines
2.1 KiB
C
/* RUN: %clang_cc1 %s -emit-llvm -triple x86_64-apple-darwin -o - | FileCheck %s
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The FE must generate padding here both at the end of each PyG_Head and
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between array elements. Reduced from Python. */
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typedef union _gc_head {
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struct {
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union _gc_head *gc_next;
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union _gc_head *gc_prev;
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long gc_refs;
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} gc;
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int dummy __attribute__((aligned(16)));
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} PyGC_Head;
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struct gc_generation {
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PyGC_Head head;
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int threshold;
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int count;
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};
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#define GEN_HEAD(n) (&generations[n].head)
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// The idea is that there are 6 undefs in this structure initializer to cover
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// the padding between elements.
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// 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 }]
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/* linked lists of container objects */
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struct gc_generation generations[3] = {
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/* PyGC_Head, threshold, count */
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{{{GEN_HEAD(0), GEN_HEAD(0), 0}}, 700, 0},
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{{{GEN_HEAD(1), GEN_HEAD(1), 0}}, 10, 0},
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{{{GEN_HEAD(2), GEN_HEAD(2), 0}}, 10, 0},
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};
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