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| ; RUN: llc -filetype=obj %s -o %t.o
; 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".
target triple = "wasm32-unknown-unknown"
declare extern_weak void @weakFunc1()
declare extern_weak void @weakFunc2() ; same signature
declare extern_weak void @weakFunc3(i32 %arg) ; different
declare extern_weak void @weakFunc4() ; should be GC'd as not called
; CHECK-GC: removing unused section {{.*}}:(weakFunc4)
define i32 @callWeakFuncs() {
call void @weakFunc1()
call void @weakFunc2()
call void @weakFunc3(i32 2)
%addr1 = ptrtoint void ()* @weakFunc1 to i32
%addr4 = ptrtoint void ()* @weakFunc4 to i32
%sum = add i32 %addr1, %addr4
ret i32 %sum
}
; CHECK: --- !WASM
; CHECK-NEXT: FileHeader:
; CHECK-NEXT: Version: 0x00000001
; 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: - ElemType: FUNCREF
; CHECK-NEXT: Limits:
; CHECK-NEXT: Flags: [ HAS_MAX ]
; CHECK-NEXT: Initial: 0x00000001
; CHECK-NEXT: Maximum: 0x00000001
; CHECK-NEXT: - Type: MEMORY
; CHECK-NEXT: Memories:
; CHECK-NEXT: - Initial: 0x00000002
; 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:weakFunc1'
; CHECK-NEXT: - Index: 1
; CHECK-NEXT: Name: 'undefined:weakFunc2'
; CHECK-NEXT: - Index: 2
; CHECK-NEXT: Name: 'undefined:weakFunc3'
; CHECK-NEXT: - Index: 3
; CHECK-NEXT: Name: callWeakFuncs
; CHECK-NEXT: ...
|