| 1 | // RUN: %clang_cc1 -triple i386-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 -emit-llvm -o %t1 %s |
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| 2 | // RUN: FileCheck -check-prefix=CHECK-I386 < %t1 %s |
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| 3 | |
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| 4 | // RUN: %clang_cc1 -triple armv6-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 -target-abi apcs-gnu -emit-llvm -o %t2 %s |
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| 5 | // RUN: FileCheck -check-prefix=CHECK-ARM < %t2 %s |
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| 6 | |
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| 7 | @interface I0 { |
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| 8 | @public |
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| 9 | unsigned x:15; |
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| 10 | unsigned y: 1; |
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| 11 | } |
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| 12 | @end |
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| 13 | |
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| 14 | // Check that we don't try to use an i32 load here, which would reach beyond the |
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| 15 | // end of the structure. |
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| 16 | // |
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| 17 | // CHECK-I386-LABEL: define i32 @f0( |
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| 18 | // CHECK-I386: [[t0_0:%.*]] = load i8, i8* {{.*}}, align 1 |
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| 19 | // CHECK-I386: lshr i8 [[t0_0]], 7 |
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| 20 | // CHECK-I386: } |
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| 21 | int f0(I0 *a) { |
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| 22 | return a->y; |
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| 23 | } |
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| 24 | |
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| 25 | // Check that we can handled straddled loads. |
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| 26 | // |
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| 27 | // CHECK-ARM-LABEL: define i32 @f1( |
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| 28 | // CHECK-ARM: [[t1_ptr:%.*]] = getelementptr |
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| 29 | // CHECK-ARM: [[t1_base:%.*]] = bitcast i8* [[t1_ptr]] to i40* |
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| 30 | // CHECK-ARM: [[t1_0:%.*]] = load i40, i40* [[t1_base]], align 1 |
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| 31 | // CHECK-ARM: [[t1_1:%.*]] = lshr i40 [[t1_0]], 1 |
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| 32 | // CHECK-ARM: [[t1_2:%.*]] = and i40 [[t1_1]], |
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| 33 | // CHECK-ARM: trunc i40 [[t1_2]] to i32 |
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| 34 | // CHECK-ARM: } |
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| 35 | @interface I1 { |
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| 36 | @public |
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| 37 | unsigned x: 1; |
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| 38 | unsigned y:32; |
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| 39 | } |
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| 40 | @end |
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| 41 | |
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| 42 | int f1(I1 *a) { return a->y; } |
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| 43 | |
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