| ; REQUIRES: x86 |
| |
| ; RUN: rm -rf %t; split-file %s %t |
| |
| ; RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/dylib.s -o %t/dylib.o |
| ; RUN: %lld -dylib -lSystem %t/dylib.o -o %t/dylib.dylib |
| |
| ;; As baseline, compile the .ll file to a real .o file and check behavior. |
| ; RUN: llc -filetype=obj %t/weak-ref.ll -o %t/obj.o |
| ; RUN: %lld -dylib -lSystem %t/obj.o %t/dylib.dylib -o %t/test.obj |
| ; RUN: llvm-objdump --macho --syms %t/test.obj | FileCheck %s --check-prefixes=WEAK-REF |
| |
| ;; Check that we get the same behavior compiling the .ll file to a bitcode .o |
| ;; file and linking that. |
| ; RUN: opt -module-summary %t/weak-ref.ll -o %t/bitcode.o |
| ; RUN: %lld -dylib -lSystem %t/bitcode.o %t/dylib.dylib -o %t/test.lto |
| ; RUN: llvm-objdump --macho --syms %t/test.lto | FileCheck %s --check-prefixes=WEAK-REF |
| |
| ; WEAK-REF: SYMBOL TABLE: |
| ; WEAK-REF: w *UND* _my_weak_extern_function |
| |
| ;--- dylib.s |
| |
| .globl _my_weak_extern_function |
| _my_weak_extern_function: |
| ret |
| |
| ;--- weak-ref.ll |
| target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.15.0" |
| |
| declare extern_weak void @my_weak_extern_function() |
| |
| ; Function Attrs: noinline nounwind optnone ssp uwtable |
| define i32 @bar(i1 zeroext %0) { |
| entry: |
| br i1 %0, label %if.then, label %if.end |
| |
| if.then: ; preds = %entry |
| call void @my_weak_extern_function() |
| br label %if.end |
| |
| if.end: ; preds = %if.then, %entry |
| ret i32 0 |
| } |