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1// RUN: %clang_cc1 -triple i386-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 -emit-llvm -o %t1 %s
2// RUN: FileCheck -check-prefix=CHECK-I386 < %t1 %s
3
4// RUN: %clang_cc1 -triple armv6-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 -target-abi apcs-gnu -emit-llvm -o %t2 %s
5// RUN: FileCheck -check-prefix=CHECK-ARM < %t2 %s
6
7@interface I0 {
8@public
9    unsigned x:15;
10    unsigned y: 1;
11}
12@end
13
14// Check that we don't try to use an i32 load here, which would reach beyond the
15// end of the structure.
16//
17// CHECK-I386: define i32 @f0(
18// CHECK-I386:   [[t0_0:%.*]] = load i16* {{.*}}, align 1
19// CHECK-I386:   lshr i16 [[t0_0]], 7
20// CHECK-I386: }
21int f0(I0 *a) {
22  return a->y;
23}
24
25// Check that we can handled straddled loads.
26//
27// CHECK-ARM: define i32 @f1(
28// CHECK-ARM:    [[t1_ptr:%.*]] = getelementptr
29// CHECK-ARM:    [[t1_base:%.*]] = bitcast i8* [[t1_ptr]] to i32*
30// CHECK-ARM:    [[t1_0:%.*]] = load i32* [[t1_base]], align 1
31// CHECK-ARM:    lshr i32 [[t1_0]], 1
32// CHECK-ARM:    [[t1_base_2_cast:%.*]] = bitcast i32* %{{.*}} to i8*
33// CHECK-ARM:    [[t1_base_2:%.*]] = getelementptr i8* [[t1_base_2_cast]]
34// CHECK-ARM:    [[t1_1:%.*]] = load i8* [[t1_base_2]], align 1
35// CHECK-ARM:    and i8 [[t1_1:%.*]], 1
36// CHECK-ARM: }
37@interface I1 {
38@public
39    unsigned x: 1;
40    unsigned y:32;
41}
42@end
43
44int f1(I1 *a) { return a->y; }
45