1 ; This test makes sure that these instructions are properly eliminated.
4 ; RUN: if as < %s | opt -instcombine -die | dis | grep sub | grep -v 'sub int %Cok, %Bok'
12 %B = sub int %A, %A ; ISA constant 0
22 %B = sub int 0, %A ; B = -A
23 %C = sub int 0, %B ; C = -B = A
27 int %test4(int %A, int %x) {
33 int %test5(int %A, int %Bok, int %Cok) {
34 %D = sub int %Bok, %Cok
39 int %test6(int %A, int %B) {
40 %C = and int %A, %B ; A - (A & B) => A & ~B
46 %B = sub int -1, %A ; B = ~A
52 %C = sub int %B, %A ; C = 9*A-A == A*8 == A << 3
58 %C = sub int %A, %B ; C = A-3*A == A*-2
62 int %test10(int %A, int %B) { ; -A*-B == A*B
69 int %test10(int %A) { ; -A *c1 == A * -c1