1; Check that we optimize out writeonly variables and corresponding stores. 2; This test uses llvm-lto2 3 4; RUN: opt -module-summary %s -o %t1.bc 5; RUN: opt -module-summary %p/Inputs/index-const-prop.ll -o %t2.bc 6; RUN: llvm-lto2 run %t1.bc %t2.bc -save-temps \ 7; RUN: -r=%t2.bc,foo,pl \ 8; RUN: -r=%t2.bc,bar,pl \ 9; RUN: -r=%t2.bc,baz,pl \ 10; RUN: -r=%t2.bc,rand, \ 11; RUN: -r=%t2.bc,gBar,pl \ 12; RUN: -r=%t1.bc,main,plx \ 13; RUN: -r=%t1.bc,baz, \ 14; RUN: -r=%t1.bc,gBar, \ 15; RUN: -o %t3 16; RUN: llvm-dis %t3.1.3.import.bc -o - | FileCheck %s --check-prefix=IMPORT 17; RUN: llvm-dis %t3.1.5.precodegen.bc -o - | FileCheck %s --check-prefix=CODEGEN 18; Check that gFoo and gBar were eliminated from source module together 19; with corresponsing stores 20; RUN: llvm-dis %t3.2.5.precodegen.bc -o - | FileCheck %s --check-prefix=CODEGEN-SRC 21 22; IMPORT: @gFoo.llvm.0 = internal unnamed_addr global i32 0, align 4 23; IMPORT-NEXT: @gBar = internal local_unnamed_addr global i32 0, align 4 24; IMPORT: !DICompileUnit({{.*}}) 25 26; CODEGEN-NOT: gFoo 27; CODEGEN-NOT: gBar 28; CODEGEN: i32 @main 29; CODEGEN-NEXT: %1 = tail call i32 @rand() 30; CODEGEN-NEXT: %2 = tail call i32 @rand() 31; CODEGEN-NEXT: ret i32 0 32 33; CODEGEN-SRC-NOT: gFoo 34; CODEGEN-SRC-NOT: gBar 35; CODEGEN-SRC: void @baz() 36; CODEGEN-SRC-NEXT: %1 = tail call i32 @rand() 37; CODEGEN-SRC-NEXT: %2 = tail call i32 @rand() 38; CODEGEN-SRC-NEXT: ret void 39 40target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 41target triple = "x86_64-pc-linux-gnu" 42 43; We should be able to link external definition of gBar to its declaration 44@gBar = external global i32 45 46define i32 @main() local_unnamed_addr { 47 tail call void @baz() 48 ret i32 0 49} 50declare void @baz() local_unnamed_addr 51