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20bde08716
Model weakly defined symbols as symbols that are both exports and imported and marked as weak. Local references to the symbols refer to the import but the linker can resolve this to the weak export if not strong symbol is found at link time. Differential Revision: https://reviews.llvm.org/D35029 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307348 91177308-0d34-0410-b5e6-96231b3b80d8
65 lines
2.1 KiB
LLVM
65 lines
2.1 KiB
LLVM
; RUN: llc -mtriple wasm32-unknown-unknown-wasm -filetype=obj %s -o - | obj2yaml | FileCheck %s
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; foo_alias() function is weak alias of function foo()
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; Generates two exports of the same function, one of them weak
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@foo_alias = weak hidden alias i32 (), i32 ()* @foo
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define hidden i32 @call_alias() #0 {
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entry:
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%call = call i32 @foo_alias()
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ret i32 %call
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}
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define hidden i32 @foo() #0 {
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entry:
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ret i32 0
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}
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; CHECK: - Type: TYPE
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; CHECK-NEXT: Signatures:
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; CHECK-NEXT: - Index: 0
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; CHECK-NEXT: ReturnType: I32
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; CHECK-NEXT: ParamTypes:
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; CHECK: - Type: IMPORT
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; CHECK-NEXT: Imports:
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; CHECK-NEXT: - Module: env
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; CHECK-NEXT: Field: foo_alias
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; CHECK-NEXT: Kind: FUNCTION
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; CHECK-NEXT: SigIndex: 0
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; CHECK: - Type: FUNCTION
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; CHECK-NEXT: FunctionTypes: [ 0, 0 ]
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; CHECK: - Type: EXPORT
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; CHECK-NEXT: Exports:
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; CHECK-NEXT: - Name: call_alias
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; CHECK-NEXT: Kind: FUNCTION
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; CHECK-NEXT: Index: 1
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; CHECK-NEXT: - Name: foo
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; CHECK-NEXT: Kind: FUNCTION
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; CHECK-NEXT: Index: 2
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; CHECK-NEXT: - Name: foo_alias
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; CHECK-NEXT: Kind: FUNCTION
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; CHECK-NEXT: Index: 2
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; CHECK: - Type: CUSTOM
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; CHECK-NEXT: Name: name
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; CHECK-NEXT: FunctionNames:
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; CHECK-NEXT: - Index: 0
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; CHECK-NEXT: Name: foo_alias
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; CHECK-NEXT: - Index: 1
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; CHECK-NEXT: Name: call_alias
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; CHECK-NEXT: - Index: 2
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; CHECK-NEXT: Name: foo
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; CHECK-NEXT: - Type: CUSTOM
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; CHECK-NEXT: Name: linking
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; CHECK-NEXT: DataSize: 0
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; CHECK-NEXT: DataAlignment: 0
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; CHECK-NEXT: SymbolInfo:
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; CHECK-NEXT: - Name: foo_alias
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; CHECK-NEXT: Flags: 1
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; CHECK-NEXT: ...
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