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