33 lines
906 B
C
33 lines
906 B
C
// RUN: %clang_cc1 -triple x86_64-pc-win32 -emit-llvm -O2 -o - %s | FileCheck %s
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// Under Windows 64, int and long are 32-bits. Make sure pointer math doesn't
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// cause any sign extensions.
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// CHECK: [[P:%.*]] = add i64 %param, -8
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// CHECK-NEXT: [[Q:%.*]] = inttoptr i64 [[P]] to [[R:%.*]]*
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// CHECK-NEXT: {{%.*}} = getelementptr inbounds [[R]], [[R]]* [[Q]], i64 0, i32 0
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#define CR(Record, TYPE, Field) \
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((TYPE *) ((unsigned char *) (Record) - (unsigned char *) &(((TYPE *) 0)->Field)))
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typedef struct _LIST_ENTRY {
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struct _LIST_ENTRY *ForwardLink;
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struct _LIST_ENTRY *BackLink;
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} LIST_ENTRY;
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typedef struct {
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unsigned long long Signature;
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LIST_ENTRY Link;
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} MEMORY_MAP;
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int test(unsigned long long param)
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{
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LIST_ENTRY *Link;
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MEMORY_MAP *Entry;
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Link = (LIST_ENTRY *) param;
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Entry = CR (Link, MEMORY_MAP, Link);
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return (int) Entry->Signature;
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}
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