1; RUN: llc -filetype=obj %s -o %t.o 2; RUN: yaml2obj %S/Inputs/globals.yaml -o %t_globals.o 3; RUN: wasm-ld -print-gc-sections -o %t1.wasm %t.o %t_globals.o | \ 4; RUN: FileCheck %s -check-prefix=PRINT-GC 5; PRINT-GC: removing unused section {{.*}}:(unused_function) 6; PRINT-GC-NOT: removing unused section {{.*}}:(used_function) 7; PRINT-GC: removing unused section {{.*}}:(.data.unused_data) 8; PRINT-GC-NOT: removing unused section {{.*}}:(.data.used_data) 9; PRINT-GC: removing unused section {{.*}}:(unused_global) 10; PRINT-GC-NOT: removing unused section {{.*}}:(used_global) 11 12target triple = "wasm32-unknown-unknown" 13 14@unused_data = hidden global i64 1, align 4 15@used_data = hidden global i32 2, align 4 16 17define hidden i64 @unused_function(i64 %arg) { 18 %1 = load i64, i64* @unused_data, align 4 19 ret i64 %1 20} 21 22define hidden i32 @used_function() { 23 %1 = load i32, i32* @used_data, align 4 24 ret i32 %1 25} 26 27declare i64 @use_global() 28 29define hidden void @_start() { 30entry: 31 call i32 @used_function() 32 call i64 @use_global() 33 ret void 34} 35 36; RUN: obj2yaml %t1.wasm | FileCheck %s 37 38; CHECK: - Type: TYPE 39; CHECK-NEXT: Signatures: 40; CHECK-NEXT: - Index: 0 41; CHECK-NEXT: ParamTypes: [] 42; CHECK-NEXT: ReturnTypes: 43; CHECK-NEXT: - I32 44; CHECK-NEXT: - Index: 1 45; CHECK-NEXT: ParamTypes: [] 46; CHECK-NEXT: ReturnTypes: [] 47; CHECK-NEXT: - Index: 2 48; CHECK-NEXT: ParamTypes: [] 49; CHECK-NEXT: ReturnTypes: 50; CHECK-NEXT: - I64 51; CHECK-NEXT: - Type: FUNCTION 52 53; CHECK: - Type: GLOBAL 54; CHECK-NEXT: Globals: 55; CHECK-NEXT: - Index: 0 56; CHECK-NEXT: Type: I32 57; CHECK-NEXT: Mutable: true 58; CHECK-NEXT: InitExpr: 59; CHECK-NEXT: Opcode: I32_CONST 60; CHECK-NEXT: Value: 66576 61; CHECK-NEXT: - Index: 1 62; CHECK-NEXT: Type: I64 63; CHECK-NEXT: Mutable: true 64; CHECK-NEXT: InitExpr: 65; CHECK-NEXT: Opcode: I64_CONST 66; CHECK-NEXT: Value: 456 67 68; CHECK: - Type: DATA 69; CHECK-NEXT: Segments: 70; CHECK-NEXT: - SectionOffset: 7 71; CHECK-NEXT: InitFlags: 0 72; CHECK-NEXT: Offset: 73; CHECK-NEXT: Opcode: I32_CONST 74; CHECK-NEXT: Value: 1024 75; CHECK-NEXT: Content: '02000000' 76; CHECK-NEXT: - Type: CUSTOM 77; CHECK-NEXT: Name: name 78; CHECK-NEXT: FunctionNames: 79; CHECK-NEXT: - Index: 0 80; CHECK-NEXT: Name: used_function 81; CHECK-NEXT: - Index: 1 82; CHECK-NEXT: Name: _start 83; CHECK-NEXT: - Index: 2 84; CHECK-NEXT: Name: use_global 85; CHECK-NEXT: ... 86 87; RUN: wasm-ld -print-gc-sections --no-gc-sections -o %t1.no-gc.wasm \ 88; RUN: %t.o %t_globals.o 89; RUN: obj2yaml %t1.no-gc.wasm | FileCheck %s -check-prefix=NO-GC 90 91; NO-GC: - Type: TYPE 92; NO-GC-NEXT: Signatures: 93; NO-GC-NEXT: - Index: 0 94; NO-GC-NEXT: ParamTypes: [] 95; NO-GC-NEXT: ReturnTypes: [] 96; NO-GC-NEXT: - Index: 1 97; NO-GC-NEXT: ParamTypes: 98; NO-GC-NEXT: - I64 99; NO-GC-NEXT: ReturnTypes: 100; NO-GC-NEXT: - I64 101; NO-GC-NEXT: - Index: 2 102; NO-GC-NEXT: ParamTypes: [] 103; NO-GC-NEXT: ReturnTypes: 104; NO-GC-NEXT: - I32 105; NO-GC-NEXT: - Index: 3 106; NO-GC-NEXT: ParamTypes: [] 107; NO-GC-NEXT: ReturnTypes: 108; NO-GC-NEXT: - I64 109; NO-GC-NEXT: - Type: FUNCTION 110 111; NO-GC: - Type: GLOBAL 112; NO-GC-NEXT: Globals: 113; NO-GC-NEXT: - Index: 0 114; NO-GC-NEXT: Type: I32 115; NO-GC-NEXT: Mutable: true 116; NO-GC-NEXT: InitExpr: 117; NO-GC-NEXT: Opcode: I32_CONST 118; NO-GC-NEXT: Value: 66576 119; NO-GC-NEXT: - Index: 1 120; NO-GC-NEXT: Type: I64 121; NO-GC-NEXT: Mutable: true 122; NO-GC-NEXT: InitExpr: 123; NO-GC-NEXT: Opcode: I64_CONST 124; NO-GC-NEXT: Value: 123 125; NO-GC-NEXT: - Index: 2 126; NO-GC-NEXT: Type: I64 127; NO-GC-NEXT: Mutable: true 128; NO-GC-NEXT: InitExpr: 129; NO-GC-NEXT: Opcode: I64_CONST 130; NO-GC-NEXT: Value: 456 131 132; NO-GC: - Type: DATA 133; NO-GC-NEXT: Segments: 134; NO-GC-NEXT: - SectionOffset: 7 135; NO-GC-NEXT: InitFlags: 0 136; NO-GC-NEXT: Offset: 137; NO-GC-NEXT: Opcode: I32_CONST 138; NO-GC-NEXT: Value: 1024 139; NO-GC-NEXT: Content: '010000000000000002000000' 140; NO-GC-NEXT: - Type: CUSTOM 141; NO-GC-NEXT: Name: name 142; NO-GC-NEXT: FunctionNames: 143; NO-GC-NEXT: - Index: 0 144; NO-GC-NEXT: Name: __wasm_call_ctors 145; NO-GC-NEXT: - Index: 1 146; NO-GC-NEXT: Name: unused_function 147; NO-GC-NEXT: - Index: 2 148; NO-GC-NEXT: Name: used_function 149; NO-GC-NEXT: - Index: 3 150; NO-GC-NEXT: Name: _start 151; NO-GC-NEXT: - Index: 4 152; NO-GC-NEXT: Name: use_global 153; NO-GC-NEXT: ... 154 155; RUN: not wasm-ld --gc-sections --relocatable -o %t1.no-gc.wasm %t.o 2>&1 | FileCheck %s -check-prefix=CHECK-ERROR 156; CHECK-ERROR: error: -r and --gc-sections may not be used together 157