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llvm-mirror/test/ThinLTO/X86/writeonly2.ll
Amy Huang 062b5d40cb Reland "Change the X86 datalayout to add three address spaces
for 32 bit signed, 32 bit unsigned, and 64 bit pointers."
This reverts 57076d3199fc2b0af4a3736b7749dd5462cacda5.

Original review at https://reviews.llvm.org/D64931.
Review for added fix at https://reviews.llvm.org/D66843.

llvm-svn: 371568
2019-09-10 23:15:38 +00:00

51 lines
1.7 KiB
LLVM

; Check that we optimize out writeonly variables and corresponding stores.
; This test uses llvm-lto2
; RUN: opt -module-summary %s -o %t1.bc
; RUN: opt -module-summary %p/Inputs/index-const-prop.ll -o %t2.bc
; RUN: llvm-lto2 run %t1.bc %t2.bc -save-temps \
; RUN: -r=%t2.bc,foo,pl \
; RUN: -r=%t2.bc,bar,pl \
; RUN: -r=%t2.bc,baz,pl \
; RUN: -r=%t2.bc,rand, \
; RUN: -r=%t2.bc,gBar,pl \
; RUN: -r=%t1.bc,main,plx \
; RUN: -r=%t1.bc,baz, \
; RUN: -r=%t1.bc,gBar, \
; RUN: -o %t3
; RUN: llvm-dis %t3.1.3.import.bc -o - | FileCheck %s --check-prefix=IMPORT
; RUN: llvm-dis %t3.1.5.precodegen.bc -o - | FileCheck %s --check-prefix=CODEGEN
; Check that gFoo and gBar were eliminated from source module together
; with corresponsing stores
; RUN: llvm-dis %t3.2.5.precodegen.bc -o - | FileCheck %s --check-prefix=CODEGEN-SRC
; IMPORT: @gFoo.llvm.0 = internal unnamed_addr global i32 1, align 4
; IMPORT-NEXT: @gBar = internal local_unnamed_addr global i32 2, align 4
; IMPORT: !DICompileUnit({{.*}})
; CODEGEN-NOT: gFoo
; CODEGEN-NOT: gBar
; CODEGEN: i32 @main
; CODEGEN-NEXT: %1 = tail call i32 @rand()
; CODEGEN-NEXT: %2 = tail call i32 @rand()
; CODEGEN-NEXT: ret i32 0
; CODEGEN-SRC-NOT: gFoo
; CODEGEN-SRC-NOT: gBar
; CODEGEN-SRC: void @baz()
; CODEGEN-SRC-NEXT: %1 = tail call i32 @rand()
; CODEGEN-SRC-NEXT: %2 = tail call i32 @rand()
; CODEGEN-SRC-NEXT: ret void
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"
; We should be able to link external definition of gBar to its declaration
@gBar = external global i32
define i32 @main() local_unnamed_addr {
tail call void @baz()
ret i32 0
}
declare void @baz() local_unnamed_addr