1 ; This test makes sure that these instructions are properly eliminated.
3 ; RUN: opt < %s -instcombine -S | \
6 @G1 = global i32 0 ; <i32*> [#uses=1]
7 @G2 = global i32 0 ; <i32*> [#uses=1]
9 define i1 @test0(i1 %A) {
10 ; CHECK-LABEL: @test0(
11 ; CHECK-NEXT: ret i1 %A
12 %B = xor i1 %A, false ; <i1> [#uses=1]
16 define i32 @test1(i32 %A) {
17 ; CHECK-LABEL: @test1(
18 ; CHECK-NEXT: ret i32 %A
19 %B = xor i32 %A, 0 ; <i32> [#uses=1]
23 define i1 @test2(i1 %A) {
24 ; CHECK-LABEL: @test2(
25 ; CHECK-NEXT: ret i1 false
26 %B = xor i1 %A, %A ; <i1> [#uses=1]
30 define i32 @test3(i32 %A) {
31 ; CHECK-LABEL: @test3(
32 ; CHECK-NEXT: ret i32 0
33 %B = xor i32 %A, %A ; <i32> [#uses=1]
37 define i32 @test4(i32 %A) {
38 ; CHECK-LABEL: @test4(
39 ; CHECK-NEXT: ret i32 -1
40 %NotA = xor i32 -1, %A ; <i32> [#uses=1]
41 %B = xor i32 %A, %NotA ; <i32> [#uses=1]
45 define i32 @test5(i32 %A) {
46 ; CHECK-LABEL: @test5(
47 ; CHECK-NEXT: %1 = and i32 %A, -124
48 ; CHECK-NEXT: ret i32 %1
49 %t1 = or i32 %A, 123 ; <i32> [#uses=1]
50 %r = xor i32 %t1, 123 ; <i32> [#uses=1]
54 define i8 @test6(i8 %A) {
55 ; CHECK-LABEL: @test6(
56 ; CHECK-NEXT: ret i8 %A
57 %B = xor i8 %A, 17 ; <i8> [#uses=1]
58 %C = xor i8 %B, 17 ; <i8> [#uses=1]
62 define i32 @test7(i32 %A, i32 %B) {
63 ; CHECK-LABEL: @test7(
64 ; CHECK-NEXT: %A1 = and i32 %A, 7
65 ; CHECK-NEXT: %B1 = and i32 %B, 128
66 ; CHECK-NEXT: %C11 = or i32 %A1, %B1
67 ; CHECK-NEXT: ret i32 %C11
68 %A1 = and i32 %A, 7 ; <i32> [#uses=1]
69 %B1 = and i32 %B, 128 ; <i32> [#uses=1]
70 %C1 = xor i32 %A1, %B1 ; <i32> [#uses=1]
74 define i8 @test8(i1 %c) {
75 ; CHECK-LABEL: @test8(
76 ; CHECK: br i1 %c, label %False, label %True
77 %d = xor i1 %c, true ; <i1> [#uses=1]
78 br i1 %d, label %True, label %False
87 define i1 @test9(i8 %A) {
88 ; CHECK-LABEL: @test9(
89 ; CHECK-NEXT: %C = icmp eq i8 %A, 89
90 ; CHECK-NEXT: ret i1 %C
91 %B = xor i8 %A, 123 ; <i8> [#uses=1]
92 %C = icmp eq i8 %B, 34 ; <i1> [#uses=1]
96 define i8 @test10(i8 %A) {
97 ; CHECK-LABEL: @test10(
98 ; CHECK-NEXT: %B = and i8 %A, 3
99 ; CHECK-NEXT: %C1 = or i8 %B, 4
100 ; CHECK-NEXT: ret i8 %C1
101 %B = and i8 %A, 3 ; <i8> [#uses=1]
102 %C = xor i8 %B, 4 ; <i8> [#uses=1]
106 define i8 @test11(i8 %A) {
107 ; CHECK-LABEL: @test11(
108 ; CHECK-NEXT: %B = and i8 %A, -13
109 ; CHECK-NEXT: %1 = or i8 %B, 8
110 ; CHECK-NEXT: ret i8 %1
111 %B = or i8 %A, 12 ; <i8> [#uses=1]
112 %C = xor i8 %B, 4 ; <i8> [#uses=1]
116 define i1 @test12(i8 %A) {
117 ; CHECK-LABEL: @test12(
118 ; CHECK-NEXT: %c = icmp ne i8 %A, 4
119 ; CHECK-NEXT: ret i1 %c
120 %B = xor i8 %A, 4 ; <i8> [#uses=1]
121 %c = icmp ne i8 %B, 0 ; <i1> [#uses=1]
125 define i1 @test13(i8 %A, i8 %B) {
126 ; CHECK-LABEL: @test13(
127 ; CHECK-NEXT: %1 = icmp ne i8 %A, %B
128 ; CHECK-NEXT: ret i1 %1
129 %C = icmp ult i8 %A, %B ; <i1> [#uses=1]
130 %D = icmp ugt i8 %A, %B ; <i1> [#uses=1]
131 %E = xor i1 %C, %D ; <i1> [#uses=1]
135 define i1 @test14(i8 %A, i8 %B) {
136 ; CHECK-LABEL: @test14(
137 ; CHECK-NEXT: ret i1 true
138 %C = icmp eq i8 %A, %B ; <i1> [#uses=1]
139 %D = icmp ne i8 %B, %A ; <i1> [#uses=1]
140 %E = xor i1 %C, %D ; <i1> [#uses=1]
144 define i32 @test15(i32 %A) {
145 ; CHECK-LABEL: @test15(
146 ; CHECK-NEXT: %C = sub i32 0, %A
147 ; CHECK-NEXT: ret i32 %C
148 %B = add i32 %A, -1 ; <i32> [#uses=1]
149 %C = xor i32 %B, -1 ; <i32> [#uses=1]
153 define i32 @test16(i32 %A) {
154 ; CHECK-LABEL: @test16(
155 ; CHECK-NEXT: %C = sub i32 -124, %A
156 ; CHECK-NEXT: ret i32 %C
157 %B = add i32 %A, 123 ; <i32> [#uses=1]
158 %C = xor i32 %B, -1 ; <i32> [#uses=1]
162 define i32 @test17(i32 %A) {
163 ; CHECK-LABEL: @test17(
164 ; CHECK-NEXT: %C = add i32 %A, -124
165 ; CHECK-NEXT: ret i32 %C
166 %B = sub i32 123, %A ; <i32> [#uses=1]
167 %C = xor i32 %B, -1 ; <i32> [#uses=1]
171 define i32 @test18(i32 %A) {
172 ; CHECK-LABEL: @test18(
173 ; CHECK-NEXT: %C = add i32 %A, 124
174 ; CHECK-NEXT: ret i32 %C
175 %B = xor i32 %A, -1 ; <i32> [#uses=1]
176 %C = sub i32 123, %B ; <i32> [#uses=1]
180 define i32 @test19(i32 %A, i32 %B) {
181 ; CHECK-LABEL: @test19(
182 ; CHECK-NEXT: ret i32 %B
183 %C = xor i32 %A, %B ; <i32> [#uses=1]
184 %D = xor i32 %C, %A ; <i32> [#uses=1]
188 define void @test20(i32 %A, i32 %B) {
189 ; CHECK-LABEL: @test20(
190 ; CHECK-NEXT: store i32 %B, i32* @G1
191 ; CHECK-NEXT: store i32 %A, i32* @G2
192 ; CHECK-NEXT: ret void
193 %tmp.2 = xor i32 %B, %A ; <i32> [#uses=2]
194 %tmp.5 = xor i32 %tmp.2, %B ; <i32> [#uses=2]
195 %tmp.8 = xor i32 %tmp.5, %tmp.2 ; <i32> [#uses=1]
196 store i32 %tmp.8, i32* @G1
197 store i32 %tmp.5, i32* @G2
201 define i32 @test21(i1 %C, i32 %A, i32 %B) {
202 ; CHECK-LABEL: @test21(
203 ; CHECK-NEXT: %D = select i1 %C, i32 %B, i32 %A
204 ; CHECK-NEXT: ret i32 %D
205 %C2 = xor i1 %C, true ; <i1> [#uses=1]
206 %D = select i1 %C2, i32 %A, i32 %B ; <i32> [#uses=1]
210 define i32 @test22(i1 %X) {
211 ; CHECK-LABEL: @test22(
212 ; CHECK-NEXT: %1 = zext i1 %X to i32
213 ; CHECK-NEXT: ret i32 %1
214 %Y = xor i1 %X, true ; <i1> [#uses=1]
215 %Z = zext i1 %Y to i32 ; <i32> [#uses=1]
216 %Q = xor i32 %Z, 1 ; <i32> [#uses=1]
220 define i1 @test23(i32 %a, i32 %b) {
221 ; CHECK-LABEL: @test23(
222 ; CHECK-NEXT: %tmp.4 = icmp eq i32 %b, 0
223 ; CHECK-NEXT: ret i1 %tmp.4
224 %tmp.2 = xor i32 %b, %a ; <i32> [#uses=1]
225 %tmp.4 = icmp eq i32 %tmp.2, %a ; <i1> [#uses=1]
229 define i1 @test24(i32 %c, i32 %d) {
230 ; CHECK-LABEL: @test24(
231 ; CHECK-NEXT: %tmp.4 = icmp ne i32 %d, 0
232 ; CHECK-NEXT: ret i1 %tmp.4
233 %tmp.2 = xor i32 %d, %c ; <i32> [#uses=1]
234 %tmp.4 = icmp ne i32 %tmp.2, %c ; <i1> [#uses=1]
238 define i32 @test25(i32 %g, i32 %h) {
239 ; CHECK-LABEL: @test25(
240 ; CHECK-NEXT: %tmp4 = and i32 %h, %g
241 ; CHECK-NEXT: ret i32 %tmp4
242 %h2 = xor i32 %h, -1 ; <i32> [#uses=1]
243 %tmp2 = and i32 %h2, %g ; <i32> [#uses=1]
244 %tmp4 = xor i32 %tmp2, %g ; <i32> [#uses=1]
248 define i32 @test26(i32 %a, i32 %b) {
249 ; CHECK-LABEL: @test26(
250 ; CHECK-NEXT: %tmp4 = and i32 %a, %b
251 ; CHECK-NEXT: ret i32 %tmp4
252 %b2 = xor i32 %b, -1 ; <i32> [#uses=1]
253 %tmp2 = xor i32 %a, %b2 ; <i32> [#uses=1]
254 %tmp4 = and i32 %tmp2, %a ; <i32> [#uses=1]
258 define i32 @test27(i32 %b, i32 %c, i32 %d) {
259 ; CHECK-LABEL: @test27(
260 ; CHECK-NEXT: %tmp = icmp eq i32 %b, %c
261 ; CHECK-NEXT: %tmp6 = zext i1 %tmp to i32
262 ; CHECK-NEXT: ret i32 %tmp6
263 %tmp2 = xor i32 %d, %b ; <i32> [#uses=1]
264 %tmp5 = xor i32 %d, %c ; <i32> [#uses=1]
265 %tmp = icmp eq i32 %tmp2, %tmp5 ; <i1> [#uses=1]
266 %tmp6 = zext i1 %tmp to i32 ; <i32> [#uses=1]
270 define i32 @test28(i32 %indvar) {
271 ; CHECK-LABEL: @test28(
272 ; CHECK-NEXT: %tmp214 = add i32 %indvar, 1
273 ; CHECK-NEXT: ret i32 %tmp214
274 %tmp7 = add i32 %indvar, -2147483647 ; <i32> [#uses=1]
275 %tmp214 = xor i32 %tmp7, -2147483648 ; <i32> [#uses=1]