| 1 | // RUN: %clang_cc1 -malign-double -triple i386-unknown-linux -emit-llvm %s -o - \ |
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| 2 | // RUN: | FileCheck --check-prefix=CHECK-ON --check-prefix=CHECK %s |
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| 3 | |
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| 4 | // RUN: %clang_cc1 -triple i386-unknown-linux -emit-llvm %s -o - \ |
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| 5 | // RUN: | FileCheck --check-prefix=CHECK-OFF --check-prefix=CHECK %s |
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| 6 | |
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| 7 | /* Structs S1, S2, S3, S4, and union U5 are taken from Intel, "IA-64 |
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| 8 | Software Conventions and Runtime Architecture Guide", version of |
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| 9 | August 1999, Section 4.2, Figures 4-1 through 4-5. |
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| 10 | A Union containing a double was also thrown in for good measure. */ |
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| 11 | |
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| 12 | struct S1 { |
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| 13 | char c; |
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| 14 | }; |
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| 15 | |
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| 16 | unsigned S1_align = __alignof(struct S1); |
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| 17 | unsigned S1_size = sizeof(struct S1); |
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| 18 | // CHECK: @S1_align = global i32 1, align 4 |
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| 19 | // CHECK: @S1_size = global i32 1, align 4 |
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| 20 | |
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| 21 | unsigned S1_c_offset = (unsigned) &((struct S1*) 0)->c; |
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| 22 | // CHECK: @S1_c_offset = global i32 0, align 4 |
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| 23 | |
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| 24 | struct S2{ |
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| 25 | char c; |
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| 26 | char d; |
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| 27 | short s; |
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| 28 | int n; |
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| 29 | }; |
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| 30 | |
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| 31 | unsigned S2_align = __alignof(struct S2); |
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| 32 | unsigned S2_size = sizeof(struct S2); |
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| 33 | // CHECK: @S2_align = global i32 4, align 4 |
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| 34 | // CHECK: @S2_size = global i32 8, align 4 |
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| 35 | |
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| 36 | unsigned S2_c_offset = (unsigned) &((struct S2*) 0)->c; |
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| 37 | unsigned S2_d_offset = (unsigned) &((struct S2*) 0)->d; |
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| 38 | unsigned S2_s_offset = (unsigned) &((struct S2*) 0)->s; |
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| 39 | unsigned S2_n_offset = (unsigned) &((struct S2*) 0)->n; |
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| 40 | // CHECK: @S2_c_offset = global i32 0, align 4 |
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| 41 | // CHECK: @S2_d_offset = global i32 1, align 4 |
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| 42 | // CHECK: @S2_s_offset = global i32 2, align 4 |
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| 43 | // CHECK: @S2_n_offset = global i32 4, align 4 |
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| 44 | |
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| 45 | struct S3 { |
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| 46 | char c; |
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| 47 | short s; |
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| 48 | }; |
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| 49 | |
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| 50 | unsigned S3_align = __alignof(struct S3); |
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| 51 | unsigned S3_size = sizeof(struct S3); |
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| 52 | // CHECK: @S3_align = global i32 2, align 4 |
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| 53 | // CHECK: @S3_size = global i32 4, align 4 |
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| 54 | |
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| 55 | unsigned S3_c_offset = (unsigned) &((struct S3*) 0)->c; |
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| 56 | unsigned S3_s_offset = (unsigned) &((struct S3*) 0)->s; |
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| 57 | // CHECK: @S3_c_offset = global i32 0, align 4 |
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| 58 | // CHECK: @S3_s_offset = global i32 2, align 4 |
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| 59 | |
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| 60 | struct S4 { |
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| 61 | char c; |
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| 62 | double d; |
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| 63 | short s; |
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| 64 | }; |
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| 65 | |
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| 66 | unsigned S4_align = __alignof(struct S4); |
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| 67 | unsigned S4_size = sizeof(struct S4); |
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| 68 | // CHECK-ON: @S4_align = global i32 8, align 4 |
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| 69 | // CHECK-ON: @S4_size = global i32 24, align 4 |
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| 70 | // CHECK-OFF: @S4_align = global i32 4, align 4 |
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| 71 | // CHECK-OFF: @S4_size = global i32 16, align 4 |
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| 72 | |
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| 73 | unsigned S4_c_offset = (unsigned) &((struct S4*) 0)->c; |
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| 74 | unsigned S4_d_offset = (unsigned) &((struct S4*) 0)->d; |
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| 75 | unsigned S4_s_offset = (unsigned) &((struct S4*) 0)->s; |
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| 76 | // CHECK: @S4_c_offset = global i32 0, align 4 |
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| 77 | // CHECK-ON: @S4_d_offset = global i32 8, align 4 |
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| 78 | // CHECK-ON: @S4_s_offset = global i32 16, align 4 |
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| 79 | // CHECK-OFF: @S4_d_offset = global i32 4, align 4 |
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| 80 | // CHECK-OFF: @S4_s_offset = global i32 12, align 4 |
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| 81 | |
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| 82 | union S5 { |
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| 83 | char c; |
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| 84 | short s; |
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| 85 | int j; |
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| 86 | }; |
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| 87 | |
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| 88 | unsigned S5_align = __alignof(union S5); |
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| 89 | unsigned S5_size = sizeof(union S5); |
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| 90 | // CHECK: @S5_align = global i32 4, align 4 |
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| 91 | // CHECK: @S5_size = global i32 4, align 4 |
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| 92 | |
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| 93 | unsigned S5_c_offset = (unsigned) &((union S5*) 0)->c; |
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| 94 | unsigned S5_s_offset = (unsigned) &((union S5*) 0)->s; |
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| 95 | unsigned S5_j_offset = (unsigned) &((union S5*) 0)->j; |
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| 96 | // CHECK: @S5_c_offset = global i32 0, align 4 |
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| 97 | // CHECK: @S5_s_offset = global i32 0, align 4 |
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| 98 | // CHECK: @S5_j_offset = global i32 0, align 4 |
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| 99 | |
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| 100 | union S6 { |
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| 101 | char c; |
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| 102 | double d; |
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| 103 | }; |
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| 104 | |
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| 105 | unsigned S6_align = __alignof(union S6); |
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| 106 | unsigned S6_size = sizeof(union S6); |
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| 107 | // CHECK-ON: @S6_align = global i32 8, align 4 |
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| 108 | // CHECK-ON: @S6_size = global i32 8, align 4 |
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| 109 | // CHECK-OFF: @S6_align = global i32 4, align 4 |
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| 110 | // CHECK-OFF: @S6_size = global i32 8, align 4 |
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| 111 | |
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| 112 | unsigned S6_c_offset = (unsigned) &((union S6*) 0)->c; |
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| 113 | unsigned S6_d_offset = (unsigned) &((union S6*) 0)->d; |
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| 114 | // CHECK: @S6_c_offset = global i32 0, align 4 |
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| 115 | // CHECK: @S6_d_offset = global i32 0, align 4 |
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| 116 | |
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