| 1 | // RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-nacl -emit-llvm -o - %s | FileCheck %s |
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| 2 | // RUN: %clang_cc1 -std=c++11 -triple=x86_64-unknown-linux-gnux32 -emit-llvm -o - %s | FileCheck %s |
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| 3 | |
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| 4 | struct test_struct {}; |
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| 5 | typedef int test_struct::* test_struct_mdp; |
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| 6 | typedef int (test_struct::*test_struct_mfp)(); |
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| 7 | |
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| 8 | // CHECK-LABEL: define i32 @{{.*}}f_mdp{{.*}}(i32 %a) |
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| 9 | test_struct_mdp f_mdp(test_struct_mdp a) { return a; } |
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| 10 | |
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| 11 | // CHECK-LABEL: define {{.*}} @{{.*}}f_mfp{{.*}}(i64 %a.coerce) |
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| 12 | test_struct_mfp f_mfp(test_struct_mfp a) { return a; } |
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| 13 | |
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| 14 | // A struct with <= 12 bytes before a member data pointer should still |
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| 15 | // be allowed in registers, since the member data pointer is only 4 bytes. |
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| 16 | // CHECK-LABEL: define void @{{.*}}f_struct_with_mdp{{.*}}(i64 %a.coerce0, i64 %a.coerce1) |
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| 17 | struct struct_with_mdp { char *a; char *b; char *c; test_struct_mdp d; }; |
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| 18 | void f_struct_with_mdp(struct_with_mdp a) { (void)a; } |
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| 19 | |
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| 20 | struct struct_with_mdp_too_much { |
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| 21 | char *a; char *b; char *c; char *d; test_struct_mdp e; |
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| 22 | }; |
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| 23 | // CHECK-LABEL: define void @{{.*}}f_struct_with_mdp_too_much{{.*}}({{.*}} byval {{.*}} %a) |
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| 24 | void f_struct_with_mdp_too_much(struct_with_mdp_too_much a) { |
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| 25 | (void)a; |
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| 26 | } |
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| 27 | |
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| 28 | // A struct with <= 8 bytes before a member function pointer should still |
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| 29 | // be allowed in registers, since the member function pointer is only 8 bytes. |
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| 30 | // CHECK-LABEL: define void @{{.*}}f_struct_with_mfp_0{{.*}}(i64 %a.coerce0, i32 %a.coerce1) |
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| 31 | struct struct_with_mfp_0 { char *a; test_struct_mfp b; }; |
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| 32 | void f_struct_with_mfp_0(struct_with_mfp_0 a) { (void)a; } |
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| 33 | |
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| 34 | // CHECK-LABEL: define void @{{.*}}f_struct_with_mfp_1{{.*}}(i64 %a.coerce0, i64 %a.coerce1) |
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| 35 | struct struct_with_mfp_1 { char *a; char *b; test_struct_mfp c; }; |
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| 36 | void f_struct_with_mfp_1(struct_with_mfp_1 a) { (void)a; } |
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| 37 | |
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| 38 | // CHECK-LABEL: define void @{{.*}}f_struct_with_mfp_too_much{{.*}}({{.*}} byval {{.*}} %a, i32 %x) |
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| 39 | struct struct_with_mfp_too_much { |
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| 40 | char *a; char *b; char *c; test_struct_mfp d; |
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| 41 | }; |
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| 42 | void f_struct_with_mfp_too_much(struct_with_mfp_too_much a, int x) { |
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| 43 | (void)a; |
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| 44 | } |
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| 45 | |
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| 46 | /* Struct containing an empty struct */ |
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| 47 | typedef struct { int* a; test_struct x; double *b; } struct_with_empty; |
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| 48 | |
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| 49 | // CHECK-LABEL: define void @{{.*}}f_pass_struct_with_empty{{.*}}(i64 %x{{.*}}, double* %x |
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| 50 | void f_pass_struct_with_empty(struct_with_empty x) { |
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| 51 | (void) x; |
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| 52 | } |
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| 53 | |
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| 54 | // CHECK-LABEL: define { i64, double* } @{{.*}}f_return_struct_with_empty |
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| 55 | struct_with_empty f_return_struct_with_empty() { |
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| 56 | return {0, {}, 0}; |
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| 57 | } |
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| 58 | |
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