mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-26 12:43:36 +01:00
eb9d6d122a
This patch imports constant variables even when they can't be internalized (which results in promotion). This offers some extra constant folding opportunities. Differential revision: https://reviews.llvm.org/D70404
35 lines
1.3 KiB
LLVM
35 lines
1.3 KiB
LLVM
; 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, i32* @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
|