File: index-const-prop-gvref.ll

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llvm-toolchain-9 1%3A9.0.1-16.1
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; RUN: opt -module-summary %s -o %t1.bc
; RUN: opt -module-summary %p/Inputs/index-const-prop-gvref.ll -o %t2.bc
; RUN: llvm-lto2 run -save-temps %t2.bc -r=%t2.bc,b,pl -r=%t2.bc,a,pl \
; RUN:               %t1.bc -r=%t1.bc,main,plx -r=%t1.bc,a, -r=%t1.bc,b, -o %t3
; RUN: llvm-dis %t3.1.3.import.bc -o - | FileCheck %s --check-prefix=SRC
; RUN: llvm-dis %t3.2.3.import.bc -o - | FileCheck %s --check-prefix=DEST

; No variable in the source module should have been internalized
; SRC:      @b = dso_local global i32* @a
; SRC-NEXT: @a = dso_local global i32 42

; We can't internalize globals referenced by other live globals
; DEST:      @b = external dso_local global i32*
; DEST-NEXT: @a = available_externally dso_local global i32 42, align 4

target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@a = external global i32
@b = external global i32*

define i32 @main() {
  %p = load i32*, i32** @b, align 8  
  store i32 33, i32* %p, align 4
  %v = load i32, i32* @a, align 4
  ret i32 %v
}