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| 1 // RUN: %clang_cc1 -triple asmjs-unknown-emscripten %s -emit-llvm -o - | FileChe
ck %s |
| 2 |
| 3 // Basic argument/attribute tests for asmjs/Emscripten |
| 4 |
| 5 // CHECK: define void @f0(i32 %i, i32 %j, i64 %k, double %l, double %m) |
| 6 void f0(int i, long j, long long k, double l, long double m) {} |
| 7 |
| 8 typedef struct { |
| 9 int aa; |
| 10 int bb; |
| 11 } s1; |
| 12 // Structs should be passed byval and not split up. |
| 13 // CHECK: define void @f1(%struct.s1* byval align 4 %i) |
| 14 void f1(s1 i) {} |
| 15 |
| 16 typedef struct { |
| 17 int cc; |
| 18 } s2; |
| 19 // Single-element structs should be returned as the one element. |
| 20 // CHECK: define i32 @f2() |
| 21 s2 f2() { |
| 22 s2 foo; |
| 23 return foo; |
| 24 } |
| 25 |
| 26 typedef struct { |
| 27 int cc; |
| 28 int dd; |
| 29 } s3; |
| 30 // Structs should be returned sret and not simplified by the frontend. |
| 31 // CHECK: define void @f3(%struct.s3* noalias sret %agg.result) |
| 32 s3 f3() { |
| 33 s3 foo; |
| 34 return foo; |
| 35 } |
| 36 |
| 37 // CHECK: define void @f4(i64 %i) |
| 38 void f4(long long i) {} |
| 39 |
| 40 // i8/i16 should be signext, i32 and higher should not. |
| 41 // CHECK: define void @f5(i8 signext %a, i16 signext %b) |
| 42 void f5(char a, short b) {} |
| 43 |
| 44 // CHECK: define void @f6(i8 zeroext %a, i16 zeroext %b) |
| 45 void f6(unsigned char a, unsigned short b) {} |
| 46 |
| 47 |
| 48 enum my_enum { |
| 49 ENUM1, |
| 50 ENUM2, |
| 51 ENUM3, |
| 52 }; |
| 53 // Enums should be treated as the underlying i32. |
| 54 // CHECK: define void @f7(i32 %a) |
| 55 void f7(enum my_enum a) {} |
| 56 |
| 57 enum my_big_enum { |
| 58 ENUM4 = 0xFFFFFFFFFFFFFFFF, |
| 59 }; |
| 60 // Big enums should be treated as the underlying i64. |
| 61 // CHECK: define void @f8(i64 %a) |
| 62 void f8(enum my_big_enum a) {} |
| 63 |
| 64 union simple_union { |
| 65 int a; |
| 66 char b; |
| 67 }; |
| 68 // Unions should be passed as byval structs. |
| 69 // CHECK: define void @f9(%union.simple_union* byval align 4 %s) |
| 70 void f9(union simple_union s) {} |
| 71 |
| 72 typedef struct { |
| 73 int b4 : 4; |
| 74 int b3 : 3; |
| 75 int b8 : 8; |
| 76 } bitfield1; |
| 77 // Bitfields should be passed as byval structs. |
| 78 // CHECK: define void @f10(%struct.bitfield1* byval align 4 %bf1) |
| 79 void f10(bitfield1 bf1) {} |
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