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400134f8ac
This patch causes RuntimeDyld to check for existing definitions when it encounters weak symbols. If a definition already exists then the new weak definition is discarded. All symbol lookups within a "logical dylib" should now agree on the address of any given weak symbol. This allows the JIT to better match the behavior of the static linker for C++ code. This support is only partial, as it does not allow strong definitions that occur after the first weak definition (in JIT symbol lookup order) to override the previous weak definitions. Support for this will be added in a future patch. llvm-svn: 278065
27 lines
511 B
LLVM
27 lines
511 B
LLVM
; RUN: lli -jit-kind=mcjit -extra-module %p/Inputs/weak-function-2.ll %s
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;
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; Check that functions in two different modules agree on the address of weak
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; function 'baz'
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define linkonce_odr i32 @baz() {
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entry:
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ret i32 0
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}
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define i8* @foo() {
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entry:
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ret i8* bitcast (i32 ()* @baz to i8*)
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}
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declare i8* @bar()
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define i32 @main(i32 %argc, i8** %argv) {
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entry:
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%call = tail call i8* @foo()
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%call1 = tail call i8* @bar()
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%cmp = icmp ne i8* %call, %call1
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%conv = zext i1 %cmp to i32
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ret i32 %conv
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}
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