xref: /llvm-project/llvm/test/Transforms/GlobalOpt/constantfold-initializers.ll (revision deab451e7a7f2dff42097049274637052c87eabd)
1; RUN: opt < %s -S -passes=globalopt | FileCheck %s
2
3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
4
5@.str91250 = global [3 x i8] zeroinitializer
6
7; CHECK: @A = local_unnamed_addr global i64 4
8@A = global i64 ptrtoint (ptr getelementptr (i32, ptr null, i64 1) to i64)
9
10; PR11352
11
12@xs = global [2 x i32] zeroinitializer, align 4
13; CHECK: @xs = local_unnamed_addr global [2 x i32] [i32 1, i32 1]
14
15; PR12642
16%PR12642.struct = type { i8 }
17@PR12642.s = global <{}> zeroinitializer, align 1
18@PR12642.p = constant ptr getelementptr (i8, ptr @PR12642.s, i64 1), align 8
19
20define internal void @test1() {
21entry:
22  store i32 1, ptr @xs
23  %0 = load i32, ptr @xs, align 4
24  store i32 %0, ptr getelementptr inbounds ([2 x i32], ptr @xs, i64 0, i64 1)
25  ret void
26}
27
28; PR12060
29
30%closure = type { i32 }
31
32@f = internal global %closure zeroinitializer, align 4
33@m = global i32 0, align 4
34; CHECK-NOT: @f
35; CHECK: @m = local_unnamed_addr global i32 13
36
37define internal i32 @test2_helper(ptr %this, i32 %b) {
38entry:
39  %0 = load i32, ptr %this, align 4
40  %add = add nsw i32 %0, %b
41  ret i32 %add
42}
43
44define internal void @test2() {
45entry:
46  store i32 4, ptr @f
47  %call = call i32 @test2_helper(ptr @f, i32 9)
48  store i32 %call, ptr @m, align 4
49  ret void
50}
51
52; PR19955
53
54@dllimportptr = global ptr null, align 4
55; CHECK: @dllimportptr = local_unnamed_addr global ptr null, align 4
56@dllimportvar = external dllimport global i32
57define internal void @test3() {
58entry:
59  store ptr @dllimportvar, ptr @dllimportptr, align 4
60  ret void
61}
62
63@dllexportptr = global ptr null, align 4
64; CHECK: @dllexportptr = local_unnamed_addr global ptr @dllexportvar, align 4
65@dllexportvar = dllexport global i32 0, align 4
66; CHECK: @dllexportvar = dllexport global i32 20, align 4
67define internal void @test4() {
68entry:
69  store i32 20, ptr @dllexportvar, align 4
70  store ptr @dllexportvar, ptr @dllexportptr, align 4
71  ret void
72}
73
74@threadlocalptr = global ptr null, align 4
75; CHECK: @threadlocalptr = local_unnamed_addr global ptr null, align 4
76@threadlocalvar = external thread_local global i32
77define internal void @test5() {
78entry:
79  %p = call ptr @llvm.threadlocal.address(ptr @threadlocalvar)
80  store ptr %p, ptr @threadlocalptr, align 4
81  ret void
82}
83
84@test6_v1 = internal global { i32, i32 } { i32 42, i32 0 }, align 8
85@test6_v2 = global i32 0, align 4
86; CHECK: @test6_v2 = local_unnamed_addr global i32 42, align 4
87define internal void @test6() {
88  %load = load { i32, i32 }, ptr @test6_v1, align 8
89  %xv0 = extractvalue { i32, i32 } %load, 0
90  %iv = insertvalue { i32, i32 } %load, i32 %xv0, 1
91  %xv1 = extractvalue { i32, i32 } %iv, 1
92  store i32 %xv1, ptr @test6_v2, align 4
93  ret void
94}
95
96@llvm.global_ctors = appending constant
97  [6 x { i32, ptr, ptr }]
98  [{ i32, ptr, ptr } { i32 65535, ptr @test1, ptr null },
99   { i32, ptr, ptr } { i32 65535, ptr @test2, ptr null },
100   { i32, ptr, ptr } { i32 65535, ptr @test3, ptr null },
101   { i32, ptr, ptr } { i32 65535, ptr @test4, ptr null },
102   { i32, ptr, ptr } { i32 65535, ptr @test5, ptr null },
103   { i32, ptr, ptr } { i32 65535, ptr @test6, ptr null }]
104