| 1 | // RUN: %clang_cc1 -triple wasm32-unknown-unknown %s -emit-llvm -o - \ |
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| 2 | // RUN: | FileCheck %s -check-prefix=WEBASSEMBLY32 |
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| 3 | // RUN: %clang_cc1 -triple wasm64-unknown-unknown %s -emit-llvm -o - \ |
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| 4 | // RUN: | FileCheck %s -check-prefix=WEBASSEMBLY64 |
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| 5 | |
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| 6 | // Basic argument/attribute tests for WebAssembly |
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| 7 | |
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| 8 | // WEBASSEMBLY32: define void @f0(i32 %i, i32 %j, i64 %k, double %l, fp128 %m) |
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| 9 | // WEBASSEMBLY64: define void @f0(i32 %i, i64 %j, i64 %k, double %l, fp128 %m) |
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| 10 | void f0(int i, long j, long long k, double l, long double m) {} |
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| 11 | |
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| 12 | typedef struct { |
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| 13 | int aa; |
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| 14 | int bb; |
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| 15 | } s1; |
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| 16 | // Structs should be passed byval and not split up. |
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| 17 | // WEBASSEMBLY32: define void @f1(%struct.s1* byval align 4 %i) |
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| 18 | // WEBASSEMBLY64: define void @f1(%struct.s1* byval align 4 %i) |
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| 19 | void f1(s1 i) {} |
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| 20 | |
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| 21 | typedef struct { |
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| 22 | int cc; |
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| 23 | } s2; |
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| 24 | // Single-element structs should be returned as the one element. |
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| 25 | // WEBASSEMBLY32: define i32 @f2() |
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| 26 | // WEBASSEMBLY64: define i32 @f2() |
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| 27 | s2 f2(void) { |
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| 28 | s2 foo; |
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| 29 | return foo; |
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| 30 | } |
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| 31 | |
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| 32 | typedef struct { |
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| 33 | int cc; |
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| 34 | int dd; |
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| 35 | } s3; |
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| 36 | // Structs should be returned sret and not simplified by the frontend. |
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| 37 | // WEBASSEMBLY32: define void @f3(%struct.s3* noalias sret %agg.result) |
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| 38 | // WEBASSEMBLY64: define void @f3(%struct.s3* noalias sret %agg.result) |
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| 39 | s3 f3(void) { |
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| 40 | s3 foo; |
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| 41 | return foo; |
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| 42 | } |
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| 43 | |
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| 44 | // WEBASSEMBLY32: define void @f4(i64 %i) |
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| 45 | // WEBASSEMBLY64: define void @f4(i64 %i) |
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| 46 | void f4(long long i) {} |
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| 47 | |
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| 48 | // i8/i16 should be signext, i32 and higher should not. |
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| 49 | // WEBASSEMBLY32: define void @f5(i8 signext %a, i16 signext %b) |
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| 50 | // WEBASSEMBLY64: define void @f5(i8 signext %a, i16 signext %b) |
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| 51 | void f5(char a, short b) {} |
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| 52 | |
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| 53 | // WEBASSEMBLY32: define void @f6(i8 zeroext %a, i16 zeroext %b) |
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| 54 | // WEBASSEMBLY64: define void @f6(i8 zeroext %a, i16 zeroext %b) |
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| 55 | void f6(unsigned char a, unsigned short b) {} |
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| 56 | |
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| 57 | enum my_enum { |
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| 58 | ENUM1, |
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| 59 | ENUM2, |
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| 60 | ENUM3, |
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| 61 | }; |
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| 62 | // Enums should be treated as the underlying i32. |
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| 63 | // WEBASSEMBLY32: define void @f7(i32 %a) |
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| 64 | // WEBASSEMBLY64: define void @f7(i32 %a) |
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| 65 | void f7(enum my_enum a) {} |
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| 66 | |
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| 67 | enum my_big_enum { |
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| 68 | ENUM4 = 0xFFFFFFFFFFFFFFFF, |
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| 69 | }; |
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| 70 | // Big enums should be treated as the underlying i64. |
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| 71 | // WEBASSEMBLY32: define void @f8(i64 %a) |
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| 72 | // WEBASSEMBLY64: define void @f8(i64 %a) |
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| 73 | void f8(enum my_big_enum a) {} |
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| 74 | |
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| 75 | union simple_union { |
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| 76 | int a; |
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| 77 | char b; |
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| 78 | }; |
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| 79 | // Unions should be passed as byval structs. |
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| 80 | // WEBASSEMBLY32: define void @f9(%union.simple_union* byval align 4 %s) |
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| 81 | // WEBASSEMBLY64: define void @f9(%union.simple_union* byval align 4 %s) |
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| 82 | void f9(union simple_union s) {} |
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| 83 | |
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| 84 | typedef struct { |
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| 85 | int b4 : 4; |
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| 86 | int b3 : 3; |
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| 87 | int b8 : 8; |
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| 88 | } bitfield1; |
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| 89 | // Bitfields should be passed as byval structs. |
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| 90 | // WEBASSEMBLY32: define void @f10(%struct.bitfield1* byval align 4 %bf1) |
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| 91 | // WEBASSEMBLY64: define void @f10(%struct.bitfield1* byval align 4 %bf1) |
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| 92 | void f10(bitfield1 bf1) {} |
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| 93 | |
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