| Reid Kleckner | 8195f69 | 2016-05-04 02:58:24 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -malign-double -triple i386-unknown-linux -emit-llvm %s -o - \ |
| 2 | // RUN: | FileCheck --check-prefix=CHECK-ON --check-prefix=CHECK %s |
| 3 | |
| 4 | // RUN: %clang_cc1 -triple i386-unknown-linux -emit-llvm %s -o - \ |
| 5 | // RUN: | FileCheck --check-prefix=CHECK-OFF --check-prefix=CHECK %s |
| 6 | |
| 7 | /* Structs S1, S2, S3, S4, and union U5 are taken from Intel, "IA-64 |
| 8 | Software Conventions and Runtime Architecture Guide", version of |
| 9 | August 1999, Section 4.2, Figures 4-1 through 4-5. |
| 10 | A Union containing a double was also thrown in for good measure. */ |
| 11 | |
| 12 | struct S1 { |
| 13 | char c; |
| 14 | }; |
| 15 | |
| 16 | unsigned S1_align = __alignof(struct S1); |
| 17 | unsigned S1_size = sizeof(struct S1); |
| 18 | // CHECK: @S1_align = global i32 1, align 4 |
| 19 | // CHECK: @S1_size = global i32 1, align 4 |
| 20 | |
| 21 | unsigned S1_c_offset = (unsigned) &((struct S1*) 0)->c; |
| 22 | // CHECK: @S1_c_offset = global i32 0, align 4 |
| 23 | |
| 24 | struct S2{ |
| 25 | char c; |
| 26 | char d; |
| 27 | short s; |
| 28 | int n; |
| 29 | }; |
| 30 | |
| 31 | unsigned S2_align = __alignof(struct S2); |
| 32 | unsigned S2_size = sizeof(struct S2); |
| 33 | // CHECK: @S2_align = global i32 4, align 4 |
| 34 | // CHECK: @S2_size = global i32 8, align 4 |
| 35 | |
| 36 | unsigned S2_c_offset = (unsigned) &((struct S2*) 0)->c; |
| 37 | unsigned S2_d_offset = (unsigned) &((struct S2*) 0)->d; |
| 38 | unsigned S2_s_offset = (unsigned) &((struct S2*) 0)->s; |
| 39 | unsigned S2_n_offset = (unsigned) &((struct S2*) 0)->n; |
| 40 | // CHECK: @S2_c_offset = global i32 0, align 4 |
| 41 | // CHECK: @S2_d_offset = global i32 1, align 4 |
| 42 | // CHECK: @S2_s_offset = global i32 2, align 4 |
| 43 | // CHECK: @S2_n_offset = global i32 4, align 4 |
| 44 | |
| 45 | struct S3 { |
| 46 | char c; |
| 47 | short s; |
| 48 | }; |
| 49 | |
| 50 | unsigned S3_align = __alignof(struct S3); |
| 51 | unsigned S3_size = sizeof(struct S3); |
| 52 | // CHECK: @S3_align = global i32 2, align 4 |
| 53 | // CHECK: @S3_size = global i32 4, align 4 |
| 54 | |
| 55 | unsigned S3_c_offset = (unsigned) &((struct S3*) 0)->c; |
| 56 | unsigned S3_s_offset = (unsigned) &((struct S3*) 0)->s; |
| 57 | // CHECK: @S3_c_offset = global i32 0, align 4 |
| 58 | // CHECK: @S3_s_offset = global i32 2, align 4 |
| 59 | |
| 60 | struct S4 { |
| 61 | char c; |
| 62 | double d; |
| 63 | short s; |
| 64 | }; |
| 65 | |
| 66 | unsigned S4_align = __alignof(struct S4); |
| 67 | unsigned S4_size = sizeof(struct S4); |
| 68 | // CHECK-ON: @S4_align = global i32 8, align 4 |
| 69 | // CHECK-ON: @S4_size = global i32 24, align 4 |
| 70 | // CHECK-OFF: @S4_align = global i32 4, align 4 |
| 71 | // CHECK-OFF: @S4_size = global i32 16, align 4 |
| 72 | |
| 73 | unsigned S4_c_offset = (unsigned) &((struct S4*) 0)->c; |
| 74 | unsigned S4_d_offset = (unsigned) &((struct S4*) 0)->d; |
| 75 | unsigned S4_s_offset = (unsigned) &((struct S4*) 0)->s; |
| 76 | // CHECK: @S4_c_offset = global i32 0, align 4 |
| 77 | // CHECK-ON: @S4_d_offset = global i32 8, align 4 |
| 78 | // CHECK-ON: @S4_s_offset = global i32 16, align 4 |
| 79 | // CHECK-OFF: @S4_d_offset = global i32 4, align 4 |
| 80 | // CHECK-OFF: @S4_s_offset = global i32 12, align 4 |
| 81 | |
| 82 | union S5 { |
| 83 | char c; |
| 84 | short s; |
| 85 | int j; |
| 86 | }; |
| 87 | |
| 88 | unsigned S5_align = __alignof(union S5); |
| 89 | unsigned S5_size = sizeof(union S5); |
| 90 | // CHECK: @S5_align = global i32 4, align 4 |
| 91 | // CHECK: @S5_size = global i32 4, align 4 |
| 92 | |
| 93 | unsigned S5_c_offset = (unsigned) &((union S5*) 0)->c; |
| 94 | unsigned S5_s_offset = (unsigned) &((union S5*) 0)->s; |
| 95 | unsigned S5_j_offset = (unsigned) &((union S5*) 0)->j; |
| 96 | // CHECK: @S5_c_offset = global i32 0, align 4 |
| 97 | // CHECK: @S5_s_offset = global i32 0, align 4 |
| 98 | // CHECK: @S5_j_offset = global i32 0, align 4 |
| 99 | |
| 100 | union S6 { |
| 101 | char c; |
| 102 | double d; |
| 103 | }; |
| 104 | |
| 105 | unsigned S6_align = __alignof(union S6); |
| 106 | unsigned S6_size = sizeof(union S6); |
| 107 | // CHECK-ON: @S6_align = global i32 8, align 4 |
| 108 | // CHECK-ON: @S6_size = global i32 8, align 4 |
| 109 | // CHECK-OFF: @S6_align = global i32 4, align 4 |
| 110 | // CHECK-OFF: @S6_size = global i32 8, align 4 |
| 111 | |
| 112 | unsigned S6_c_offset = (unsigned) &((union S6*) 0)->c; |
| 113 | unsigned S6_d_offset = (unsigned) &((union S6*) 0)->d; |
| 114 | // CHECK: @S6_c_offset = global i32 0, align 4 |
| 115 | // CHECK: @S6_d_offset = global i32 0, align 4 |