13aef3528SEugene Leviant; Check that we optimize out writeonly variables and corresponding stores. 23aef3528SEugene Leviant; This test uses llvm-lto2 33aef3528SEugene Leviant 43aef3528SEugene Leviant; RUN: opt -module-summary %s -o %t1.bc 53aef3528SEugene Leviant; RUN: opt -module-summary %p/Inputs/index-const-prop.ll -o %t2.bc 63aef3528SEugene Leviant; RUN: llvm-lto2 run %t1.bc %t2.bc -save-temps \ 73aef3528SEugene Leviant; RUN: -r=%t2.bc,foo,pl \ 83aef3528SEugene Leviant; RUN: -r=%t2.bc,bar,pl \ 93aef3528SEugene Leviant; RUN: -r=%t2.bc,baz,pl \ 103aef3528SEugene Leviant; RUN: -r=%t2.bc,rand, \ 113aef3528SEugene Leviant; RUN: -r=%t2.bc,gBar,pl \ 123aef3528SEugene Leviant; RUN: -r=%t1.bc,main,plx \ 133aef3528SEugene Leviant; RUN: -r=%t1.bc,baz, \ 143aef3528SEugene Leviant; RUN: -r=%t1.bc,gBar, \ 153aef3528SEugene Leviant; RUN: -o %t3 163aef3528SEugene Leviant; RUN: llvm-dis %t3.1.3.import.bc -o - | FileCheck %s --check-prefix=IMPORT 173aef3528SEugene Leviant; RUN: llvm-dis %t3.1.5.precodegen.bc -o - | FileCheck %s --check-prefix=CODEGEN 183aef3528SEugene Leviant; Check that gFoo and gBar were eliminated from source module together 193aef3528SEugene Leviant; with corresponsing stores 203aef3528SEugene Leviant; RUN: llvm-dis %t3.2.5.precodegen.bc -o - | FileCheck %s --check-prefix=CODEGEN-SRC 213aef3528SEugene Leviant 22*cedfa38fSJin Lin; IMPORT: @gBar = internal local_unnamed_addr global i32 0, align 4 23*cedfa38fSJin Lin; IMPORT-NEXT: @gFoo.llvm.0 = internal unnamed_addr global i32 0, align 4 243aef3528SEugene Leviant; IMPORT: !DICompileUnit({{.*}}) 253aef3528SEugene Leviant 263aef3528SEugene Leviant; CODEGEN-NOT: gFoo 273aef3528SEugene Leviant; CODEGEN-NOT: gBar 283aef3528SEugene Leviant; CODEGEN: i32 @main 293aef3528SEugene Leviant; CODEGEN-NEXT: %1 = tail call i32 @rand() 303aef3528SEugene Leviant; CODEGEN-NEXT: %2 = tail call i32 @rand() 313aef3528SEugene Leviant; CODEGEN-NEXT: ret i32 0 323aef3528SEugene Leviant 333aef3528SEugene Leviant; CODEGEN-SRC-NOT: gFoo 343aef3528SEugene Leviant; CODEGEN-SRC-NOT: gBar 353aef3528SEugene Leviant; CODEGEN-SRC: void @baz() 363aef3528SEugene Leviant; CODEGEN-SRC-NEXT: %1 = tail call i32 @rand() 373aef3528SEugene Leviant; CODEGEN-SRC-NEXT: %2 = tail call i32 @rand() 383aef3528SEugene Leviant; CODEGEN-SRC-NEXT: ret void 393aef3528SEugene Leviant 407b1d7937SAmy Huangtarget datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 413aef3528SEugene Levianttarget triple = "x86_64-pc-linux-gnu" 423aef3528SEugene Leviant 433aef3528SEugene Leviant; We should be able to link external definition of gBar to its declaration 443aef3528SEugene Leviant@gBar = external global i32 453aef3528SEugene Leviant 463aef3528SEugene Leviantdefine i32 @main() local_unnamed_addr { 473aef3528SEugene Leviant tail call void @baz() 483aef3528SEugene Leviant ret i32 0 493aef3528SEugene Leviant} 503aef3528SEugene Leviantdeclare void @baz() local_unnamed_addr 51