llvm-project

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; REQUIRES: x86
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; RUN: rm -rf %t; split-file %s %t
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;; Test that a weak symbol in a direct .o file wins over
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;; a weak symbol in a .a file.
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;; Like weak-definition-in-main-file.s, but in bitcode.
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; RUN: llvm-as %t/test.ll -o %t/test.o
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; RUN: llvm-as %t/weakfoo.ll -o %t/weakfoo.o
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; RUN: llvm-ar --format=darwin rcs %t/weakfoo.a %t/weakfoo.o
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; PREFER-DIRECT-OBJECT-NOT: O __TEXT,weak _foo
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; RUN: %lld -lSystem -o %t/out %t/weakfoo.a %t/test.o
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; RUN: llvm-objdump --syms %t/out | FileCheck %s --check-prefix=PREFER-DIRECT-OBJECT
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;--- weakfoo.ll
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target triple = "x86_64-apple-macosx10.15.0"
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target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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define void @baz() noinline optnone {
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  ret void
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}
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define weak void @foo() noinline optnone section "__TEXT,weak" {
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  ret void
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}
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;--- test.ll
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target triple = "x86_64-apple-macosx10.15.0"
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target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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declare void @baz();
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define weak void @foo() noinline optnone {
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  ret void
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}
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define void @main() {
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  ; This pulls in weakfoo.a due to the __baz undef, but __foo should
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  ; still be resolved against the weak symbol in this file.
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  call void @baz()
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  call void @foo()
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  ret void
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}
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