17 lines
482 B
LLVM
17 lines
482 B
LLVM
; RUN: opt < %s -aa-pipeline=basic-aa -gvn -instcombine -S | FileCheck %s
|
|
|
|
define i32 @test() {
|
|
; CHECK: ret i32 0
|
|
%A = alloca i32 ; <i32*> [#uses=3]
|
|
call void @foo( i32* %A )
|
|
%X = load i32, i32* %A ; <i32> [#uses=1]
|
|
tail call void @bar( )
|
|
%Y = load i32, i32* %A ; <i32> [#uses=1]
|
|
%Z = sub i32 %X, %Y ; <i32> [#uses=1]
|
|
ret i32 %Z
|
|
}
|
|
|
|
declare void @foo(i32*)
|
|
|
|
declare void @bar()
|