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test/CodeGen/malign-double.cpp
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| // RUN: %clang_cc1 -malign-double -triple i386-unknown-linux -emit-llvm %s -o - \ | |||||
| // RUN: | FileCheck --check-prefix=CHECK-ON --check-prefix=CHECK %s | |||||
| // RUN: %clang_cc1 -triple i386-unknown-linux -emit-llvm %s -o - \ | |||||
| // RUN: | FileCheck --check-prefix=CHECK-OFF --check-prefix=CHECK %s | |||||
| /* Structs S1, S2, S3, S4, and union U5 are taken from Intel, "IA-64 | |||||
| Software Conventions and Runtime Architecture Guide", version of | |||||
| August 1999, Section 4.2, Figures 4-1 through 4-5. | |||||
| A Union containing a double was also thrown in for good measure. */ | |||||
| struct S1 { | |||||
| char c; | |||||
| }; | |||||
| unsigned S1_align = __alignof(struct S1); | |||||
| unsigned S1_size = sizeof(struct S1); | |||||
| // CHECK: @S1_align = global i32 1, align 4 | |||||
| // CHECK: @S1_size = global i32 1, align 4 | |||||
| unsigned S1_c_offset = (unsigned) &((struct S1*) 0)->c; | |||||
| // CHECK: @S1_c_offset = global i32 0, align 4 | |||||
| struct S2{ | |||||
| char c; | |||||
| char d; | |||||
| short s; | |||||
| int n; | |||||
| }; | |||||
| unsigned S2_align = __alignof(struct S2); | |||||
| unsigned S2_size = sizeof(struct S2); | |||||
| // CHECK: @S2_align = global i32 4, align 4 | |||||
| // CHECK: @S2_size = global i32 8, align 4 | |||||
| unsigned S2_c_offset = (unsigned) &((struct S2*) 0)->c; | |||||
| unsigned S2_d_offset = (unsigned) &((struct S2*) 0)->d; | |||||
| unsigned S2_s_offset = (unsigned) &((struct S2*) 0)->s; | |||||
| unsigned S2_n_offset = (unsigned) &((struct S2*) 0)->n; | |||||
| // CHECK: @S2_c_offset = global i32 0, align 4 | |||||
| // CHECK: @S2_d_offset = global i32 1, align 4 | |||||
| // CHECK: @S2_s_offset = global i32 2, align 4 | |||||
| // CHECK: @S2_n_offset = global i32 4, align 4 | |||||
| struct S3 { | |||||
| char c; | |||||
| short s; | |||||
| }; | |||||
| unsigned S3_align = __alignof(struct S3); | |||||
| unsigned S3_size = sizeof(struct S3); | |||||
| // CHECK: @S3_align = global i32 2, align 4 | |||||
| // CHECK: @S3_size = global i32 4, align 4 | |||||
| unsigned S3_c_offset = (unsigned) &((struct S3*) 0)->c; | |||||
| unsigned S3_s_offset = (unsigned) &((struct S3*) 0)->s; | |||||
| // CHECK: @S3_c_offset = global i32 0, align 4 | |||||
| // CHECK: @S3_s_offset = global i32 2, align 4 | |||||
| struct S4 { | |||||
| char c; | |||||
| double d; | |||||
| short s; | |||||
| }; | |||||
| unsigned S4_align = __alignof(struct S4); | |||||
| unsigned S4_size = sizeof(struct S4); | |||||
| // CHECK-ON: @S4_align = global i32 8, align 4 | |||||
| // CHECK-ON: @S4_size = global i32 24, align 4 | |||||
| // CHECK-OFF: @S4_align = global i32 4, align 4 | |||||
| // CHECK-OFF: @S4_size = global i32 16, align 4 | |||||
| unsigned S4_c_offset = (unsigned) &((struct S4*) 0)->c; | |||||
| unsigned S4_d_offset = (unsigned) &((struct S4*) 0)->d; | |||||
| unsigned S4_s_offset = (unsigned) &((struct S4*) 0)->s; | |||||
| // CHECK: @S4_c_offset = global i32 0, align 4 | |||||
| // CHECK-ON: @S4_d_offset = global i32 8, align 4 | |||||
| // CHECK-ON: @S4_s_offset = global i32 16, align 4 | |||||
| // CHECK-OFF: @S4_d_offset = global i32 4, align 4 | |||||
| // CHECK-OFF: @S4_s_offset = global i32 12, align 4 | |||||
| union S5 { | |||||
| char c; | |||||
| short s; | |||||
| int j; | |||||
| }; | |||||
| unsigned S5_align = __alignof(union S5); | |||||
| unsigned S5_size = sizeof(union S5); | |||||
| // CHECK: @S5_align = global i32 4, align 4 | |||||
| // CHECK: @S5_size = global i32 4, align 4 | |||||
| unsigned S5_c_offset = (unsigned) &((union S5*) 0)->c; | |||||
| unsigned S5_s_offset = (unsigned) &((union S5*) 0)->s; | |||||
| unsigned S5_j_offset = (unsigned) &((union S5*) 0)->j; | |||||
| // CHECK: @S5_c_offset = global i32 0, align 4 | |||||
| // CHECK: @S5_s_offset = global i32 0, align 4 | |||||
| // CHECK: @S5_j_offset = global i32 0, align 4 | |||||
| union S6 { | |||||
| char c; | |||||
| double d; | |||||
| }; | |||||
| unsigned S6_align = __alignof(union S6); | |||||
| unsigned S6_size = sizeof(union S6); | |||||
| // CHECK-ON: @S6_align = global i32 8, align 4 | |||||
| // CHECK-ON: @S6_size = global i32 8, align 4 | |||||
| // CHECK-OFF: @S6_align = global i32 4, align 4 | |||||
| // CHECK-OFF: @S6_size = global i32 8, align 4 | |||||
| unsigned S6_c_offset = (unsigned) &((union S6*) 0)->c; | |||||
| unsigned S6_d_offset = (unsigned) &((union S6*) 0)->d; | |||||
| // CHECK: @S6_c_offset = global i32 0, align 4 | |||||
| // CHECK: @S6_d_offset = global i32 0, align 4 | |||||