xref: /llvm-project/llvm/test/Transforms/ConstraintElimination/gep-constexpr.ll (revision 13ffde316a8541d77116bd18f73efada236617f3)
1256c6729SFlorian Hahn; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2256c6729SFlorian Hahn; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
3256c6729SFlorian Hahn
4256c6729SFlorian Hahndeclare void @llvm.assume(i1 noundef) #0
5256c6729SFlorian Hahn
6256c6729SFlorian Hahn@arr1 = common global [3 x i16] zeroinitializer, align 2
7256c6729SFlorian Hahn
8256c6729SFlorian Hahndefine i1 @gep_constexpr_index_lt_upper(i32 noundef %i) {
9256c6729SFlorian Hahn; CHECK-LABEL: @gep_constexpr_index_lt_upper(
10256c6729SFlorian Hahn; CHECK-NEXT:  entry:
11256c6729SFlorian Hahn; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 [[I:%.*]], 3
12256c6729SFlorian Hahn; CHECK-NEXT:    call void @llvm.assume(i1 [[CMP]])
13256c6729SFlorian Hahn; CHECK-NEXT:    [[IDXPROM:%.*]] = zext i32 [[I]] to i64
14256c6729SFlorian Hahn; CHECK-NEXT:    [[UPPER:%.*]] = getelementptr inbounds i16, ptr @arr1, i64 [[IDXPROM]]
15*02885ef3SFlorian Hahn; CHECK-NEXT:    ret i1 true
16256c6729SFlorian Hahn;
17256c6729SFlorian Hahnentry:
18256c6729SFlorian Hahn  %cmp = icmp ult i32 %i, 3
19256c6729SFlorian Hahn  call void @llvm.assume(i1 %cmp)
20256c6729SFlorian Hahn  %idxprom = zext i32 %i to i64
21256c6729SFlorian Hahn  %upper = getelementptr inbounds i16, ptr @arr1, i64 %idxprom
22256c6729SFlorian Hahn  %c.1 = icmp ult ptr %upper, getelementptr inbounds ([3 x i16], ptr @arr1, i64 1, i64 0)
23256c6729SFlorian Hahn  ret i1 %c.1
24256c6729SFlorian Hahn}
25256c6729SFlorian Hahn
26256c6729SFlorian Hahndefine i1 @gep_constexpr_index_may_be_gt_upper(i32 noundef %i) {
27256c6729SFlorian Hahn; CHECK-LABEL: @gep_constexpr_index_may_be_gt_upper(
28256c6729SFlorian Hahn; CHECK-NEXT:  entry:
29256c6729SFlorian Hahn; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 [[I:%.*]], 3
30256c6729SFlorian Hahn; CHECK-NEXT:    call void @llvm.assume(i1 [[CMP]])
31256c6729SFlorian Hahn; CHECK-NEXT:    [[IDXPROM:%.*]] = zext i32 [[I]] to i64
32256c6729SFlorian Hahn; CHECK-NEXT:    [[UPPER:%.*]] = getelementptr inbounds i16, ptr @arr1, i64 [[IDXPROM]]
33256c6729SFlorian Hahn; CHECK-NEXT:    [[C_1:%.*]] = icmp ult ptr [[UPPER]], getelementptr inbounds ([3 x i16], ptr @arr1, i64 0, i64 2)
34256c6729SFlorian Hahn; CHECK-NEXT:    ret i1 [[C_1]]
35256c6729SFlorian Hahn;
36256c6729SFlorian Hahnentry:
37256c6729SFlorian Hahn  %cmp = icmp ult i32 %i, 3
38256c6729SFlorian Hahn  call void @llvm.assume(i1 %cmp)
39256c6729SFlorian Hahn  %idxprom = zext i32 %i to i64
40256c6729SFlorian Hahn  %upper = getelementptr inbounds i16, ptr @arr1, i64 %idxprom
41256c6729SFlorian Hahn  %c.1 = icmp ult ptr %upper, getelementptr inbounds ([3 x i16], ptr @arr1, i64 0, i64 2)
42256c6729SFlorian Hahn  ret i1 %c.1
43256c6729SFlorian Hahn}
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