1; RUN: opt < %s -basicaa -dse -S | FileCheck %s
2
3target datalayout = "e-p:64:64:64"
4
5declare void @free(i8* nocapture)
6declare noalias i8* @malloc(i64)
7
8; CHECK-LABEL: @test(
9; CHECK-NEXT: bitcast
10; CHECK-NEXT: @free
11; CHECK-NEXT: ret void
12define void @test(i32* %Q, i32* %P) {
13        %DEAD = load i32, i32* %Q            ; <i32> [#uses=1]
14        store i32 %DEAD, i32* %P
15        %1 = bitcast i32* %P to i8*
16        tail call void @free(i8* %1)
17        ret void
18}
19
20; CHECK-LABEL: @test2(
21; CHECK-NEXT: bitcast
22; CHECK-NEXT: @free
23; CHECK-NEXT: ret void
24define void @test2({i32, i32}* %P) {
25	%Q = getelementptr {i32, i32}, {i32, i32} *%P, i32 0, i32 1
26	store i32 4, i32* %Q
27        %1 = bitcast {i32, i32}* %P to i8*
28        tail call void @free(i8* %1)
29	ret void
30}
31
32; CHECK-LABEL: @test3(
33; CHECK-NOT: store
34; CHECK: ret void
35define void @test3() {
36  %m = call i8* @malloc(i64 24)
37  store i8 0, i8* %m
38  %m1 = getelementptr i8, i8* %m, i64 1
39  store i8 1, i8* %m1
40  call void @free(i8* %m)
41  ret void
42}
43
44; PR11240
45; CHECK-LABEL: @test4(
46; CHECK-NOT: store
47; CHECK: ret void
48define void @test4(i1 %x) nounwind {
49entry:
50  %alloc1 = tail call noalias i8* @malloc(i64 4) nounwind
51  br i1 %x, label %skipinit1, label %init1
52
53init1:
54  store i8 1, i8* %alloc1
55  br label %skipinit1
56
57skipinit1:
58  tail call void @free(i8* %alloc1) nounwind
59  ret void
60}
61
62; CHECK-LABEL: @test5(
63define void @test5() {
64  br label %bb
65
66bb:
67  tail call void @free(i8* undef) nounwind
68  br label %bb
69}
70
71