1# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s 2# RUN: wasm-ld --entry=callWeakFuncs --print-gc-sections %t.o \ 3# RUN: -o %t.wasm 2>&1 | FileCheck -check-prefix=CHECK-GC %s 4# RUN: obj2yaml %t.wasm | FileCheck %s 5 6 7# Check that calling an undefined weak function generates an appropriate stub 8# that will fail at runtime with "unreachable". 9 10.functype weakFunc1 () -> () 11.functype weakFunc2 () -> () 12.functype weakFunc3 (i32) -> () 13.functype weakFunc4 () -> () 14 15.globl callWeakFuncs 16 17callWeakFuncs: 18 .functype callWeakFuncs () -> (i32) 19 call weakFunc1 20 call weakFunc2 21 i32.const 2 22 call weakFunc3 23 i32.const weakFunc1 24 i32.const weakFunc4 25 i32.add 26 end_function 27 28.weak weakFunc1 29.weak weakFunc2 30.weak weakFunc3 31.weak weakFunc4 32 33# CHECK-GC: removing unused section {{.*}}:(weakFunc4) 34 35# CHECK: --- !WASM 36# CHECK-NEXT: FileHeader: 37# CHECK-NEXT: Version: 0x1 38# CHECK-NEXT: Sections: 39# CHECK-NEXT: - Type: TYPE 40# CHECK-NEXT: Signatures: 41# CHECK-NEXT: - Index: 0 42# CHECK-NEXT: ParamTypes: 43# CHECK-NEXT: ReturnTypes: [] 44# CHECK-NEXT: - Index: 1 45# CHECK-NEXT: ParamTypes: 46# CHECK-NEXT: - I32 47# CHECK-NEXT: ReturnTypes: [] 48# CHECK-NEXT: - Index: 2 49# CHECK-NEXT: ParamTypes: 50# CHECK-NEXT: ReturnTypes: 51# CHECK-NEXT: - I32 52# CHECK-NEXT: - Type: FUNCTION 53# CHECK-NEXT: FunctionTypes: [ 0, 0, 1, 2 ] 54# CHECK-NEXT: - Type: TABLE 55# CHECK-NEXT: Tables: 56# CHECK-NEXT: - Index: 0 57# CHECK-NEXT: ElemType: FUNCREF 58# CHECK-NEXT: Limits: 59# CHECK-NEXT: Flags: [ HAS_MAX ] 60# CHECK-NEXT: Minimum: 0x1 61# CHECK-NEXT: Maximum: 0x1 62# CHECK-NEXT: - Type: MEMORY 63# CHECK-NEXT: Memories: 64# CHECK-NEXT: - Minimum: 0x2 65# CHECK-NEXT: - Type: GLOBAL 66# CHECK-NEXT: Globals: 67# CHECK-NEXT: - Index: 0 68# CHECK-NEXT: Type: I32 69# CHECK-NEXT: Mutable: true 70# CHECK-NEXT: InitExpr: 71# CHECK-NEXT: Opcode: I32_CONST 72# CHECK-NEXT: Value: 66560 73# CHECK-NEXT: - Type: EXPORT 74# CHECK-NEXT: Exports: 75# CHECK-NEXT: - Name: memory 76# CHECK-NEXT: Kind: MEMORY 77# CHECK-NEXT: Index: 0 78# CHECK-NEXT: - Name: callWeakFuncs 79# CHECK-NEXT: Kind: FUNCTION 80# CHECK-NEXT: Index: 3 81# CHECK-NEXT: - Type: CODE 82# CHECK-NEXT: Functions: 83# CHECK-NEXT: - Index: 0 84# CHECK-NEXT: Locals: 85# CHECK-NEXT: Body: 000B 86# CHECK-NEXT: - Index: 1 87# CHECK-NEXT: Locals: 88# CHECK-NEXT: Body: 000B 89# CHECK-NEXT: - Index: 2 90# CHECK-NEXT: Locals: 91# CHECK-NEXT: Body: 000B 92# CHECK-NEXT: - Index: 3 93# CHECK-NEXT: Locals: 94# CHECK-NEXT: Body: 10808080800010818080800041021082808080004180808080004180808080006A0B 95# CHECK-NEXT: - Type: CUSTOM 96# CHECK-NEXT: Name: name 97# CHECK-NEXT: FunctionNames: 98# CHECK-NEXT: - Index: 0 99# CHECK-NEXT: Name: 'undefined_weak:weakFunc1' 100# CHECK-NEXT: - Index: 1 101# CHECK-NEXT: Name: 'undefined_weak:weakFunc2' 102# CHECK-NEXT: - Index: 2 103# CHECK-NEXT: Name: 'undefined_weak:weakFunc3' 104# CHECK-NEXT: - Index: 3 105# CHECK-NEXT: Name: callWeakFuncs 106# CHECK-NEXT: GlobalNames: 107# CHECK-NEXT: - Index: 0 108# CHECK-NEXT: Name: __stack_pointer 109# CHECK-NEXT: ... 110