1 ; RUN: opt < %s -basicaa -gvn -instcombine -S 2>&1 | FileCheck %s
3 target datalayout = "e-p:32:32:32-p1:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
5 ; Make sure that basicaa thinks R and r are must aliases.
6 define i32 @test1(i8 * %P) {
8 %Q = bitcast i8* %P to {i32, i32}*
9 %R = getelementptr {i32, i32}, {i32, i32}* %Q, i32 0, i32 1
10 %S = load i32, i32* %R
12 %q = bitcast i8* %P to {i32, i32}*
13 %r = getelementptr {i32, i32}, {i32, i32}* %q, i32 0, i32 1
14 %s = load i32, i32* %r
18 ; CHECK-LABEL: @test1(
22 define i32 @test2(i8 * %P) {
24 %Q = bitcast i8* %P to {i32, i32, i32}*
25 %R = getelementptr {i32, i32, i32}, {i32, i32, i32}* %Q, i32 0, i32 1
26 %S = load i32, i32* %R
28 %r = getelementptr {i32, i32, i32}, {i32, i32, i32}* %Q, i32 0, i32 2
31 %s = load i32, i32* %R
35 ; CHECK-LABEL: @test2(
40 ; This was a miscompilation.
41 define i32 @test3({float, {i32, i32, i32}}* %P) {
43 %P2 = getelementptr {float, {i32, i32, i32}}, {float, {i32, i32, i32}}* %P, i32 0, i32 1
44 %R = getelementptr {i32, i32, i32}, {i32, i32, i32}* %P2, i32 0, i32 1
45 %S = load i32, i32* %R
47 %r = getelementptr {i32, i32, i32}, {i32, i32, i32}* %P2, i32 0, i32 2
50 %s = load i32, i32* %R
54 ; CHECK-LABEL: @test3(
59 ;; This is reduced from the SmallPtrSet constructor.
60 %SmallPtrSetImpl = type { i8**, i32, i32, i32, [1 x i8*] }
61 %SmallPtrSet64 = type { %SmallPtrSetImpl, [64 x i8*] }
63 define i32 @test4(%SmallPtrSet64* %P) {
65 %tmp2 = getelementptr inbounds %SmallPtrSet64, %SmallPtrSet64* %P, i64 0, i32 0, i32 1
66 store i32 64, i32* %tmp2, align 8
67 %tmp3 = getelementptr inbounds %SmallPtrSet64, %SmallPtrSet64* %P, i64 0, i32 0, i32 4, i64 64
68 store i8* null, i8** %tmp3, align 8
69 %tmp4 = load i32, i32* %tmp2, align 8
71 ; CHECK-LABEL: @test4(
76 define i32 @test5(i32* %p, i64 %i) {
77 %pi = getelementptr i32, i32* %p, i64 %i
78 %i.next = add i64 %i, 1
79 %pi.next = getelementptr i32, i32* %p, i64 %i.next
80 %x = load i32, i32* %pi
81 store i32 42, i32* %pi.next
82 %y = load i32, i32* %pi
85 ; CHECK-LABEL: @test5(
89 define i32 @test5_as1_smaller_size(i32 addrspace(1)* %p, i8 %i) {
90 %pi = getelementptr i32, i32 addrspace(1)* %p, i8 %i
91 %i.next = add i8 %i, 1
92 %pi.next = getelementptr i32, i32 addrspace(1)* %p, i8 %i.next
93 %x = load i32, i32 addrspace(1)* %pi
94 store i32 42, i32 addrspace(1)* %pi.next
95 %y = load i32, i32 addrspace(1)* %pi
98 ; CHECK-LABEL: @test5_as1_smaller_size(
103 define i32 @test5_as1_same_size(i32 addrspace(1)* %p, i16 %i) {
104 %pi = getelementptr i32, i32 addrspace(1)* %p, i16 %i
105 %i.next = add i16 %i, 1
106 %pi.next = getelementptr i32, i32 addrspace(1)* %p, i16 %i.next
107 %x = load i32, i32 addrspace(1)* %pi
108 store i32 42, i32 addrspace(1)* %pi.next
109 %y = load i32, i32 addrspace(1)* %pi
112 ; CHECK-LABEL: @test5_as1_same_size(
117 define i32 @test6(i32* %p, i64 %i1) {
119 %pi = getelementptr i32, i32* %p, i64 %i
120 %i.next = or i64 %i, 1
121 %pi.next = getelementptr i32, i32* %p, i64 %i.next
122 %x = load i32, i32* %pi
123 store i32 42, i32* %pi.next
124 %y = load i32, i32* %pi
127 ; CHECK-LABEL: @test6(
132 define i32 @test7(i32* %p, i64 %i) {
133 %pi = getelementptr i32, i32* %p, i64 1
134 %i.next = shl i64 %i, 2
135 %pi.next = getelementptr i32, i32* %p, i64 %i.next
136 %x = load i32, i32* %pi
137 store i32 42, i32* %pi.next
138 %y = load i32, i32* %pi
141 ; CHECK-LABEL: @test7(
145 ; P[zext(i)] != p[zext(i+1)]
147 define i32 @test8(i32* %p, i16 %i) {
148 %i1 = zext i16 %i to i32
149 %pi = getelementptr i32, i32* %p, i32 %i1
150 %i.next = add i16 %i, 1
151 %i.next2 = zext i16 %i.next to i32
152 %pi.next = getelementptr i32, i32* %p, i32 %i.next2
153 %x = load i32, i32* %pi
154 store i32 42, i32* %pi.next
155 %y = load i32, i32* %pi
158 ; CHECK-LABEL: @test8(
162 define i8 @test9([4 x i8] *%P, i32 %i, i32 %j) {
166 %P2 = getelementptr [4 x i8], [4 x i8] *%P, i32 0, i32 %i3
171 %P4 = getelementptr [4 x i8], [4 x i8]* %P, i32 0, i32 %j2
173 %x = load i8, i8* %P2
175 %y = load i8, i8* %P2
178 ; CHECK-LABEL: @test9(
182 define i8 @test10([4 x i8] *%P, i32 %i) {
186 %P2 = getelementptr [4 x i8], [4 x i8] *%P, i32 0, i32 %i3
189 %P4 = getelementptr [4 x i8], [4 x i8]* %P, i32 0, i32 %i2
191 %x = load i8, i8* %P2
193 %y = load i8, i8* %P2
196 ; CHECK-LABEL: @test10(
200 ; (This was a miscompilation.)
201 define float @test11(i32 %indvar, [4 x [2 x float]]* %q) nounwind ssp {
202 %tmp = mul i32 %indvar, -1
203 %dec = add i32 %tmp, 3
204 %scevgep = getelementptr [4 x [2 x float]], [4 x [2 x float]]* %q, i32 0, i32 %dec
205 %scevgep35 = bitcast [2 x float]* %scevgep to i64*
206 %arrayidx28 = getelementptr inbounds [4 x [2 x float]], [4 x [2 x float]]* %q, i32 0, i32 0
207 %y29 = getelementptr inbounds [2 x float], [2 x float]* %arrayidx28, i32 0, i32 1
208 store float 1.0, float* %y29, align 4
209 store i64 0, i64* %scevgep35, align 4
210 %tmp30 = load float, float* %y29, align 4
212 ; CHECK-LABEL: @test11(
213 ; CHECK: ret float %tmp30
216 ; (This was a miscompilation.)
217 define i32 @test12(i32 %x, i32 %y, i8* %p) nounwind {
218 %a = bitcast i8* %p to [13 x i8]*
219 %b = getelementptr [13 x i8], [13 x i8]* %a, i32 %x
220 %c = bitcast [13 x i8]* %b to [15 x i8]*
221 %d = getelementptr [15 x i8], [15 x i8]* %c, i32 %y, i32 8
222 %castd = bitcast i8* %d to i32*
223 %castp = bitcast i8* %p to i32*
224 store i32 1, i32* %castp
225 store i32 0, i32* %castd
226 %r = load i32, i32* %castp
228 ; CHECK-LABEL: @test12(
232 @P = internal global i32 715827882, align 4
233 @Q = internal global i32 715827883, align 4
234 @.str = private unnamed_addr constant [7 x i8] c"%u %u\0A\00", align 1
236 ; Make sure we recognize that u[0] and u[Global + Cst] may alias
237 ; when the addition has wrapping semantic.
239 ; CHECK-LABEL: @test13(
240 ; Make sure the stores appear before the related loads.
241 ; CHECK: store i8 42,
242 ; CHECK: store i8 99,
243 ; Find the loads and make sure they are used in the arguments to the printf.
244 ; CHECK: [[T0ADDR:%[a-zA-Z0-9_]+]] = getelementptr inbounds [3 x i8], [3 x i8]* %t, i32 0, i32 0
245 ; CHECK: [[T0:%[a-zA-Z0-9_]+]] = load i8, i8* [[T0ADDR]], align 1
246 ; CHECK: [[T0ARG:%[a-zA-Z0-9_]+]] = zext i8 [[T0]] to i32
247 ; CHECK: [[U0ADDR:%[a-zA-Z0-9_]+]] = getelementptr inbounds [3 x i8], [3 x i8]* %u, i32 0, i32 0
248 ; CHECK: [[U0:%[a-zA-Z0-9_]+]] = load i8, i8* [[U0ADDR]], align 1
249 ; CHECK: [[U0ARG:%[a-zA-Z0-9_]+]] = zext i8 [[U0]] to i32
250 ; CHECK: call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i32 0, i32 0), i32 [[T0ARG]], i32 [[U0ARG]])
252 define void @test13() {
254 %t = alloca [3 x i8], align 1
255 %u = alloca [3 x i8], align 1
256 %tmp = load i32, i32* @P, align 4
257 %tmp1 = mul i32 %tmp, 3
258 %mul = add i32 %tmp1, -2147483646
259 %idxprom = zext i32 %mul to i64
260 %arrayidx = getelementptr inbounds [3 x i8], [3 x i8]* %t, i64 0, i64 %idxprom
261 store i8 42, i8* %arrayidx, align 1
262 %tmp2 = load i32, i32* @Q, align 4
263 %tmp3 = mul i32 %tmp2, 3
264 %mul2 = add i32 %tmp3, 2147483647
265 %idxprom3 = zext i32 %mul2 to i64
266 %arrayidx4 = getelementptr inbounds [3 x i8], [3 x i8]* %u, i64 0, i64 %idxprom3
267 store i8 99, i8* %arrayidx4, align 1
268 %arrayidx5 = getelementptr inbounds [3 x i8], [3 x i8]* %t, i64 0, i64 0
269 %tmp4 = load i8, i8* %arrayidx5, align 1
270 %conv = zext i8 %tmp4 to i32
271 %arrayidx6 = getelementptr inbounds [3 x i8], [3 x i8]* %u, i64 0, i64 0
272 %tmp5 = load i8, i8* %arrayidx6, align 1
273 %conv7 = zext i8 %tmp5 to i32
274 %call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %conv, i32 %conv7)
278 declare i32 @printf(i8*, ...)