mirror of
https://github.com/RPCS3/llvm.git
synced 2024-11-25 04:39:51 +00:00
f08872048f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93775 91177308-0d34-0410-b5e6-96231b3b80d8
35 lines
754 B
LLVM
35 lines
754 B
LLVM
; RUN: opt < %s -reassociate -die -S | FileCheck %s
|
|
|
|
define i32 @test1(i32 %a, i32 %b) {
|
|
%tmp.2 = and i32 %b, %a
|
|
%tmp.4 = xor i32 %a, -1
|
|
; (A&B)&~A == 0
|
|
%tmp.5 = and i32 %tmp.2, %tmp.4
|
|
ret i32 %tmp.5
|
|
; CHECK: @test1
|
|
; CHECK: ret i32 0
|
|
}
|
|
|
|
define i32 @test2(i32 %a, i32 %b) {
|
|
%tmp.1 = and i32 %a, 1234
|
|
%tmp.2 = and i32 %b, %tmp.1
|
|
%tmp.4 = xor i32 %a, -1
|
|
; A&~A == 0
|
|
%tmp.5 = and i32 %tmp.2, %tmp.4
|
|
ret i32 %tmp.5
|
|
; CHECK: @test2
|
|
; CHECK: ret i32 0
|
|
}
|
|
|
|
define i32 @test3(i32 %b, i32 %a) {
|
|
%tmp.1 = add i32 %a, 1234
|
|
%tmp.2 = add i32 %b, %tmp.1
|
|
%tmp.4 = sub i32 0, %a
|
|
; (b+(a+1234))+-a -> b+1234
|
|
%tmp.5 = add i32 %tmp.2, %tmp.4
|
|
ret i32 %tmp.5
|
|
; CHECK: @test3
|
|
; CHECK: %tmp.5 = add i32 %b, 1234
|
|
; CHECK: ret i32 %tmp.5
|
|
}
|