xref: /llvm-project/llvm/test/Transforms/InstSimplify/ConstProp/gep-constanfolding-error.ll (revision 10f315dc9c96ec2413881ab55a285e35d80def88)
1; RUN: opt -passes=gvn -S -o - %s | FileCheck %s
2; RUN: opt -passes=newgvn -S -o - %s | FileCheck %s
3; Test that the constantfolding getelementptr computation results in
4; j[5][4][1] (j+239)
5; and not [1][4][4][1] (#449) which is an incorrect out-of-range error
6target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
7target triple = "armv7-none-eabi"
8
9@f = local_unnamed_addr global i32 2, align 4
10@t6 = local_unnamed_addr global i32 1, align 4
11@j = local_unnamed_addr global [6 x [6 x [7 x i8]]] [[6 x [7 x i8]] [[7 x i8] c"\06\00\00\00\00\00\00", [7 x i8] zeroinitializer, [7 x i8] zeroinitializer, [7 x i8] zeroinitializer, [7 x i8] zeroinitializer, [7 x i8] zeroinitializer], [6 x [7 x i8]] zeroinitializer, [6 x [7 x i8]] zeroinitializer, [6 x [7 x i8]] zeroinitializer, [6 x [7 x i8]] zeroinitializer, [6 x [7 x i8]] zeroinitializer], align 1
12@p = internal global i64 0, align 8
13@y = local_unnamed_addr global ptr @p, align 4
14@b = internal unnamed_addr global i32 0, align 4
15@h = common local_unnamed_addr global i16 0, align 2
16@a = common local_unnamed_addr global i32 0, align 4
17@k = common local_unnamed_addr global i32 0, align 4
18@t11 = common local_unnamed_addr global i32 0, align 4
19
20; Function Attrs: nounwind
21define i32 @main() local_unnamed_addr {
22entry:
23  %0 = load i32, ptr @t6, align 4
24  %inc = add nsw i32 %0, 1
25  store i32 %inc, ptr @t6, align 4
26  store i16 4, ptr @h, align 2
27  %1 = load i32, ptr @a, align 4
28  %conv = trunc i32 %1 to i8
29  store i32 1, ptr @f, align 4
30  %2 = load i64, ptr @p, align 8
31  %cmp4 = icmp slt i64 %2, 2
32  %conv6 = zext i1 %cmp4 to i8
33  %3 = load i16, ptr @h, align 2
34  %conv7 = sext i16 %3 to i32
35  %add = add nsw i32 %conv7, 1
36  %f.promoted = load i32, ptr @f, align 4
37  %4 = mul i32 %conv7, 7
38  %5 = add i32 %4, 5
39  %6 = sub i32 -1, %f.promoted
40  %7 = icmp sgt i32 %6, -2
41  %smax = select i1 %7, i32 %6, i32 -2
42  %8 = sub i32 6, %smax
43  %scevgep = getelementptr [6 x [6 x [7 x i8]]], ptr @j, i32 0, i32 0, i32 %5, i32 %8
44  %9 = add i32 %f.promoted, %smax
45  %10 = add i32 %9, 2
46  call void @llvm.memset.p0.i32(ptr %scevgep, i8 %conv6, i32 %10, i1 false)
47; CHECK: call void @llvm.memset.p0.i32(ptr getelementptr inbounds nuw (i8, ptr @j, i32 239), i8 %conv6, i32 1, i1 false)
48  ret i32 0
49}
50; Function Attrs: argmemonly nounwind
51declare void @llvm.memset.p0.i32(ptr nocapture writeonly, i8, i32, i1)
52