1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -S -indvars -opaque-pointers < %s | FileCheck %s
3
4target datalayout = "n8:16:32:64"
5
6@data = common global [240 x i8] zeroinitializer, align 16
7
8; Based on the test from lftr.ll
9define void @test_zext(ptr %a) {
10; CHECK-LABEL: @test_zext(
11; CHECK-NEXT:  entry:
12; CHECK-NEXT:    br label [[LOOP:%.*]]
13; CHECK:       loop:
14; CHECK-NEXT:    [[P_0:%.*]] = phi ptr [ @data, [[ENTRY:%.*]] ], [ [[T3:%.*]], [[LOOP]] ]
15; CHECK-NEXT:    [[DOT0:%.*]] = phi ptr [ [[A:%.*]], [[ENTRY]] ], [ [[T:%.*]], [[LOOP]] ]
16; CHECK-NEXT:    [[T]] = getelementptr inbounds i8, ptr [[DOT0]], i64 1
17; CHECK-NEXT:    [[T2:%.*]] = load i8, ptr [[DOT0]], align 1
18; CHECK-NEXT:    [[T3]] = getelementptr inbounds i8, ptr [[P_0]], i64 1
19; CHECK-NEXT:    store i8 [[T2]], ptr [[P_0]], align 1
20; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne ptr [[P_0]], getelementptr (i8, ptr @data, i64 239)
21; CHECK-NEXT:    br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT:%.*]]
22; CHECK:       exit:
23; CHECK-NEXT:    ret void
24;
25entry:
26  br label %loop
27
28loop:
29  %i.0 = phi i8 [ 0, %entry ], [ %t4, %loop ]
30  %p.0 = phi ptr [ getelementptr inbounds ([240 x i8], [240 x i8]* @data, i64 0, i64 0), %entry ], [ %t3, %loop ]
31  %.0 = phi ptr [ %a, %entry ], [ %t, %loop ]
32  %t = getelementptr inbounds i8, ptr %.0, i64 1
33  %t2 = load i8, ptr %.0, align 1
34  %t3 = getelementptr inbounds i8, ptr %p.0, i64 1
35  store i8 %t2, ptr %p.0, align 1
36  %t4 = add i8 %i.0, 1
37  %t5 = icmp ult i8 %t4, -16
38  br i1 %t5, label %loop, label %exit
39
40exit:
41  ret void
42}
43