| Daniel Dunbar | c5c446c | 2010-09-02 23:53:31 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -triple i386-apple-darwin10 -emit-llvm -o %t %s |
| 2 | // RUN: FileCheck -check-prefix=CHECK-I386 < %t %s |
| 3 | // RUN: %clang_cc1 -triple armv6-apple-darwin10 -target-abi apcs-gnu -emit-llvm -o %t %s |
| 4 | // RUN: FileCheck -check-prefix=CHECK-ARM < %t %s |
| 5 | |
| 6 | @interface I0 { |
| 7 | @public |
| 8 | unsigned x:15; |
| 9 | unsigned y: 1; |
| 10 | } |
| 11 | @end |
| 12 | |
| 13 | // Check that we don't try to use an i32 load here, which would reach beyond the |
| 14 | // end of the structure. |
| 15 | // |
| 16 | // CHECK-I386: define i32 @f0( |
| 17 | // CHECK-I386: [[t0_0:%.*]] = load i16* {{.*}}, align 1 |
| 18 | // CHECK-I386: lshr i16 [[t0_0]], 7 |
| 19 | // CHECK-I386: } |
| 20 | int f0(I0 *a) { |
| 21 | return a->y; |
| 22 | } |
| 23 | |
| 24 | // Check that we can handled straddled loads. |
| 25 | // |
| 26 | // CHECK-ARM: define i32 @f1( |
| 27 | // CHECK-ARM: [[t1_ptr:%.*]] = getelementptr |
| 28 | // CHECK-ARM: [[t1_base:%.*]] = bitcast i8* [[t1_ptr]] to i32* |
| 29 | // CHECK-ARM: [[t1_0:%.*]] = load i32* [[t1_base]], align 1 |
| 30 | // CHECK-ARM: lshr i32 [[t1_0]], 1 |
| 31 | // CHECK-ARM: [[t1_base_2_cast:%.*]] = bitcast i32* %1 to i8* |
| 32 | // CHECK-ARM: [[t1_base_2:%.*]] = getelementptr i8* [[t1_base_2_cast]] |
| 33 | // CHECK-ARM: [[t1_1:%.*]] = load i8* [[t1_base_2]], align 1 |
| 34 | // CHECK-ARM: and i8 [[t1_1:%.*]], 1 |
| 35 | // CHECK-ARM: } |
| 36 | @interface I1 { |
| 37 | @public |
| 38 | unsigned x: 1; |
| 39 | unsigned y:32; |
| 40 | } |
| 41 | @end |
| 42 | |
| 43 | int f1(I1 *a) { return a->y; } |