derek.holloway
7502bf64a4
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46 lines
1.5 KiB
LLVM
46 lines
1.5 KiB
LLVM
; REQUIRES: x86
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; RUN: rm -rf %t; split-file %s %t
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; RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/dylib.s -o %t/dylib.o
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; RUN: %lld -dylib -lSystem %t/dylib.o -o %t/dylib.dylib
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;; As baseline, compile the .ll file to a real .o file and check behavior.
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; RUN: llc -filetype=obj %t/weak-ref.ll -o %t/obj.o
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; RUN: %lld -dylib -lSystem %t/obj.o %t/dylib.dylib -o %t/test.obj
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; RUN: llvm-objdump --macho --syms %t/test.obj | FileCheck %s --check-prefixes=WEAK-REF
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;; Check that we get the same behavior compiling the .ll file to a bitcode .o
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;; file and linking that.
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; RUN: opt -module-summary %t/weak-ref.ll -o %t/bitcode.o
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; RUN: %lld -dylib -lSystem %t/bitcode.o %t/dylib.dylib -o %t/test.lto
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; RUN: llvm-objdump --macho --syms %t/test.lto | FileCheck %s --check-prefixes=WEAK-REF
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; WEAK-REF: SYMBOL TABLE:
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; WEAK-REF: w *UND* _my_weak_extern_function
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;--- dylib.s
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.globl _my_weak_extern_function
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_my_weak_extern_function:
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ret
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;--- weak-ref.ll
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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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target triple = "x86_64-apple-macosx10.15.0"
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declare extern_weak void @my_weak_extern_function()
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; Function Attrs: noinline nounwind optnone ssp uwtable
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define i32 @bar(i1 zeroext %0) {
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entry:
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br i1 %0, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @my_weak_extern_function()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret i32 0
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}
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