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1# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s2# RUN: wasm-ld --entry=callWeakFuncs --print-gc-sections %t.o \3# RUN: -o %t.wasm 2>&1 | FileCheck -check-prefix=CHECK-GC %s4# RUN: obj2yaml %t.wasm | FileCheck %s5 6 7# Check that calling an undefined weak function generates an appropriate stub8# that will fail at runtime with "unreachable".9 10.functype weakFunc1 () -> ()11.functype weakFunc2 () -> ()12.functype weakFunc3 (i32) -> ()13.functype weakFunc4 () -> ()14 15.globl callWeakFuncs16 17callWeakFuncs:18 .functype callWeakFuncs () -> (i32)19 call weakFunc120 call weakFunc221 i32.const 222 call weakFunc323 i32.const weakFunc124 i32.const weakFunc425 i32.add26 end_function27 28.weak weakFunc129.weak weakFunc230.weak weakFunc331.weak weakFunc432 33# CHECK-GC: removing unused section {{.*}}:(weakFunc4)34 35# CHECK: --- !WASM36# CHECK-NEXT: FileHeader:37# CHECK-NEXT: Version: 0x138# CHECK-NEXT: Sections:39# CHECK-NEXT: - Type: TYPE40# CHECK-NEXT: Signatures:41# CHECK-NEXT: - Index: 042# CHECK-NEXT: ParamTypes:43# CHECK-NEXT: ReturnTypes: []44# CHECK-NEXT: - Index: 145# CHECK-NEXT: ParamTypes:46# CHECK-NEXT: - I3247# CHECK-NEXT: ReturnTypes: []48# CHECK-NEXT: - Index: 249# CHECK-NEXT: ParamTypes:50# CHECK-NEXT: ReturnTypes:51# CHECK-NEXT: - I3252# CHECK-NEXT: - Type: FUNCTION53# CHECK-NEXT: FunctionTypes: [ 0, 0, 1, 2 ]54# CHECK-NEXT: - Type: TABLE55# CHECK-NEXT: Tables:56# CHECK-NEXT: - Index: 057# CHECK-NEXT: ElemType: FUNCREF58# CHECK-NEXT: Limits:59# CHECK-NEXT: Flags: [ HAS_MAX ]60# CHECK-NEXT: Minimum: 0x161# CHECK-NEXT: Maximum: 0x162# CHECK-NEXT: - Type: MEMORY63# CHECK-NEXT: Memories:64# CHECK-NEXT: - Minimum: 0x165# CHECK-NEXT: - Type: GLOBAL66# CHECK-NEXT: Globals:67# CHECK-NEXT: - Index: 068# CHECK-NEXT: Type: I3269# CHECK-NEXT: Mutable: true70# CHECK-NEXT: InitExpr:71# CHECK-NEXT: Opcode: I32_CONST72# CHECK-NEXT: Value: 6553673# CHECK-NEXT: - Type: EXPORT74# CHECK-NEXT: Exports:75# CHECK-NEXT: - Name: memory76# CHECK-NEXT: Kind: MEMORY77# CHECK-NEXT: Index: 078# CHECK-NEXT: - Name: callWeakFuncs79# CHECK-NEXT: Kind: FUNCTION80# CHECK-NEXT: Index: 381# CHECK-NEXT: - Type: CODE82# CHECK-NEXT: Functions:83# CHECK-NEXT: - Index: 084# CHECK-NEXT: Locals:85# CHECK-NEXT: Body: 000B86# CHECK-NEXT: - Index: 187# CHECK-NEXT: Locals:88# CHECK-NEXT: Body: 000B89# CHECK-NEXT: - Index: 290# CHECK-NEXT: Locals:91# CHECK-NEXT: Body: 000B92# CHECK-NEXT: - Index: 393# CHECK-NEXT: Locals:94# CHECK-NEXT: Body: 10808080800010818080800041021082808080004180808080004180808080006A0B95# CHECK-NEXT: - Type: CUSTOM96# CHECK-NEXT: Name: name97# CHECK-NEXT: FunctionNames:98# CHECK-NEXT: - Index: 099# CHECK-NEXT: Name: 'undefined_weak:weakFunc1'100# CHECK-NEXT: - Index: 1101# CHECK-NEXT: Name: 'undefined_weak:weakFunc2'102# CHECK-NEXT: - Index: 2103# CHECK-NEXT: Name: 'undefined_weak:weakFunc3'104# CHECK-NEXT: - Index: 3105# CHECK-NEXT: Name: callWeakFuncs106# CHECK-NEXT: GlobalNames:107# CHECK-NEXT: - Index: 0108# CHECK-NEXT: Name: __stack_pointer109# CHECK-NEXT: ...110