mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-15 04:08:07 +00:00
fe9388ccb4
BasicAA to make use of this fact when computing ModRef info. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63718 91177308-0d34-0410-b5e6-96231b3b80d8
14 lines
375 B
LLVM
14 lines
375 B
LLVM
; RUN: llvm-as < %s | opt -basicaa -gvn | llvm-dis | grep load | count 1
|
|
|
|
@flag0 = internal global i32 zeroinitializer
|
|
@turn = internal global i32 zeroinitializer
|
|
|
|
|
|
define i32 @main() {
|
|
%a = load i32* @flag0
|
|
%b = tail call i32 @llvm.atomic.swap.i32.p0i32(i32* @turn, i32 1)
|
|
%c = load i32* @flag0
|
|
ret i32 %c
|
|
}
|
|
|
|
declare i32 @llvm.atomic.swap.i32.p0i32(i32*, i32) nounwind |