| ; Check that we internalize external constant if it is accessed |
| ; purely by non-volatile loads. |
| ; RUN: opt -thinlto-bc %s -o %t-main |
| ; RUN: opt -thinlto-bc %p/Inputs/import-ro-constant-foo.ll -o %t-foo |
| ; RUN: opt -thinlto-bc %p/Inputs/import-ro-constant-bar.ll -o %t-bar |
| ; RUN: llvm-lto2 run -save-temps -o %t-out %t-main %t-foo %t-bar \ |
| ; RUN: -r=%t-foo,foo,pl \ |
| ; RUN: -r=%t-main,main,plx \ |
| ; RUN: -r=%t-main,_Z3barv,l \ |
| ; RUN: -r=%t-main,foo, \ |
| ; RUN: -r=%t-bar,_Z3barv,pl \ |
| ; RUN: -r=%t-bar,foo, |
| ; RUN: llvm-dis %t-out.1.3.import.bc -o - | FileCheck %s --check-prefix=IMPORT |
| ; RUN: llvm-dis %t-out.1.4.opt.bc -o - | FileCheck %s --check-prefix=OPT |
| |
| ; IMPORT: @foo = internal local_unnamed_addr constant i32 21, align 4 #0 |
| ; IMPORT: attributes #0 = { "thinlto-internalize" } |
| ; OPT: i32 @main() |
| ; OPT-NEXT: entry: |
| ; OPT-NEXT: ret i32 42 |
| |
| source_filename = "main.c" |
| 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-unknown-linux-gnu" |
| |
| @foo = external dso_local local_unnamed_addr constant i32, align 4 |
| define dso_local i32 @main() local_unnamed_addr { |
| entry: |
| %0 = load i32, ptr @foo, align 4 |
| %call = tail call i32 @_Z3barv() |
| %add = add nsw i32 %call, %0 |
| ret i32 %add |
| } |
| declare dso_local i32 @_Z3barv() local_unnamed_addr |