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# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s
# RUN: wasm-ld --entry=callWeakFuncs --print-gc-sections %t.o \
# RUN: -o %t.wasm 2>&1 | FileCheck -check-prefix=CHECK-GC %s
# RUN: obj2yaml %t.wasm | FileCheck %s
# Check that calling an undefined weak function generates an appropriate stub
# that will fail at runtime with "unreachable".
.functype weakFunc1 () -> ()
.functype weakFunc2 () -> ()
.functype weakFunc3 (i32) -> ()
.functype weakFunc4 () -> ()
.globl callWeakFuncs
callWeakFuncs:
.functype callWeakFuncs () -> (i32)
call weakFunc1
call weakFunc2
i32.const 2
call weakFunc3
i32.const weakFunc1
i32.const weakFunc4
i32.add
end_function
.weak weakFunc1
.weak weakFunc2
.weak weakFunc3
.weak weakFunc4
# CHECK-GC: removing unused section {{.*}}:(weakFunc4)
# CHECK: --- !WASM
# CHECK-NEXT: FileHeader:
# CHECK-NEXT: Version: 0x1
# CHECK-NEXT: Sections:
# CHECK-NEXT: - Type: TYPE
# CHECK-NEXT: Signatures:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: ParamTypes:
# CHECK-NEXT: ReturnTypes: []
# CHECK-NEXT: - Index: 1
# CHECK-NEXT: ParamTypes:
# CHECK-NEXT: - I32
# CHECK-NEXT: ReturnTypes: []
# CHECK-NEXT: - Index: 2
# CHECK-NEXT: ParamTypes:
# CHECK-NEXT: ReturnTypes:
# CHECK-NEXT: - I32
# CHECK-NEXT: - Type: FUNCTION
# CHECK-NEXT: FunctionTypes: [ 0, 0, 1, 2 ]
# CHECK-NEXT: - Type: TABLE
# CHECK-NEXT: Tables:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: ElemType: FUNCREF
# CHECK-NEXT: Limits:
# CHECK-NEXT: Flags: [ HAS_MAX ]
# CHECK-NEXT: Minimum: 0x1
# CHECK-NEXT: Maximum: 0x1
# CHECK-NEXT: - Type: MEMORY
# CHECK-NEXT: Memories:
# CHECK-NEXT: - Minimum: 0x2
# CHECK-NEXT: - Type: GLOBAL
# CHECK-NEXT: Globals:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: Type: I32
# CHECK-NEXT: Mutable: true
# CHECK-NEXT: InitExpr:
# CHECK-NEXT: Opcode: I32_CONST
# CHECK-NEXT: Value: 66560
# CHECK-NEXT: - Type: EXPORT
# CHECK-NEXT: Exports:
# CHECK-NEXT: - Name: memory
# CHECK-NEXT: Kind: MEMORY
# CHECK-NEXT: Index: 0
# CHECK-NEXT: - Name: callWeakFuncs
# CHECK-NEXT: Kind: FUNCTION
# CHECK-NEXT: Index: 3
# CHECK-NEXT: - Type: CODE
# CHECK-NEXT: Functions:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: Locals:
# CHECK-NEXT: Body: 000B
# CHECK-NEXT: - Index: 1
# CHECK-NEXT: Locals:
# CHECK-NEXT: Body: 000B
# CHECK-NEXT: - Index: 2
# CHECK-NEXT: Locals:
# CHECK-NEXT: Body: 000B
# CHECK-NEXT: - Index: 3
# CHECK-NEXT: Locals:
# CHECK-NEXT: Body: 10808080800010818080800041021082808080004180808080004180808080006A0B
# CHECK-NEXT: - Type: CUSTOM
# CHECK-NEXT: Name: name
# CHECK-NEXT: FunctionNames:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: Name: 'undefined_weak:weakFunc1'
# CHECK-NEXT: - Index: 1
# CHECK-NEXT: Name: 'undefined_weak:weakFunc2'
# CHECK-NEXT: - Index: 2
# CHECK-NEXT: Name: 'undefined_weak:weakFunc3'
# CHECK-NEXT: - Index: 3
# CHECK-NEXT: Name: callWeakFuncs
# CHECK-NEXT: GlobalNames:
# CHECK-NEXT: - Index: 0
# CHECK-NEXT: Name: __stack_pointer
# CHECK-NEXT: ...
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