| ; Test to ensure that we import a single copy of a global variable. This is |
| ; important when we link in an object file twice, which is normally works when |
| ; all symbols have either weak or internal linkage. If we import an internal |
| ; global variable twice it will get promoted in each module, and given the same |
| ; name as the IR hash will be identical, resulting in multiple defs when linking. |
| ; RUN: opt -module-summary %s -o %t1.bc |
| ; RUN: opt -module-summary %p/Inputs/globals-import.ll -o %t2.bc |
| ; RUN: opt -module-summary %p/Inputs/globals-import.ll -o %t2b.bc |
| ; RUN: llvm-lto -thinlto-action=thinlink %t1.bc %t2.bc %t2b.bc -o %t3.index.bc |
| |
| ; RUN: llvm-lto -thinlto-action=import %t1.bc -thinlto-index=%t3.index.bc |
| ; RUN: llvm-dis %t1.bc.thinlto.imported.bc -o - | FileCheck --check-prefix=IMPORT %s |
| ; RUN: llvm-lto -thinlto-action=promote %t2.bc -thinlto-index=%t3.index.bc |
| ; RUN: llvm-lto -thinlto-action=promote %t2b.bc -thinlto-index=%t3.index.bc |
| ; RUN: llvm-dis %t2.bc.thinlto.promoted.bc -o - | FileCheck --check-prefix=PROMOTE1 %s |
| ; RUN: llvm-dis %t2b.bc.thinlto.promoted.bc -o - | FileCheck --check-prefix=PROMOTE2 %s |
| |
| ; IMPORT: @baz.llvm.0 = internal constant i32 10, align 4 |
| |
| ; PROMOTE1: @baz.llvm.0 = hidden constant i32 10, align 4 |
| ; PROMOTE1: define weak_odr i32 @foo() { |
| |
| ; Second copy of IR object should not have any symbols imported/promoted. |
| ; PROMOTE2: @baz = internal constant i32 10, align 4 |
| ; PROMOTE2: define available_externally i32 @foo() { |
| |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-pc-linux-gnu" |
| |
| declare i32 @foo() |
| |
| define i32 @main() local_unnamed_addr { |
| %1 = call i32 @foo() |
| ret i32 %1 |
| } |