aboutsummaryrefslogtreecommitdiffstats
path: root/test/Transforms/Reassociate/inverses.ll
blob: 0ce704698a2fbe7e778fdba0a1b337d41139ad6a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
; RUN: llvm-as < %s | opt -reassociate -dce | llvm-dis | not grep '\(and\|sub\)'

int %test1(int %a, int %b) {
        %tmp.2 = and int %b, %a
        %tmp.4 = xor int %a, -1
        %tmp.5 = and int %tmp.2, %tmp.4 ; (A&B)&~A == 0
        ret int %tmp.5
}

int %test2(int %a, int %b) {
	%tmp.1 = and int %a, 1234
        %tmp.2 = and int %b, %tmp.1
        %tmp.4 = xor int %a, -1
        %tmp.5 = and int %tmp.2, %tmp.4 ; A&~A == 0
        ret int %tmp.5
}

int %test3(int %b, int %a) {
	%tmp.1 = add int %a, 1234
        %tmp.2 = add int %b, %tmp.1
        %tmp.4 = sub int 0, %a
        %tmp.5 = add int %tmp.2, %tmp.4   ; (b+(a+1234))+-a -> b+1234
        ret int %tmp.5
}