32 lines
899 B
C
32 lines
899 B
C
// 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]] [[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;
|
|
}
|