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1; RUN: llc < %s -march=hexagon -mcpu=hexagonv4 -O2 -disable-lsr | FileCheck %s
2; ModuleID = 'hwloop-dbg.o'
3target datalayout = "e-p:32:32:32-i64:64:64-i32:32:32-i16:16:16-i1:32:32-f64:64:64-f32:32:32-v64:64:64-v32:32:32-a0:0-n16:32"
4target triple = "hexagon"
5
6define void @foo(i32* nocapture %a, i32* nocapture %b) nounwind !dbg !5 {
7entry:
8  tail call void @llvm.dbg.value(metadata i32* %a, i64 0, metadata !13, metadata !DIExpression()), !dbg !17
9  tail call void @llvm.dbg.value(metadata i32* %b, i64 0, metadata !14, metadata !DIExpression()), !dbg !18
10  tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !15, metadata !DIExpression()), !dbg !19
11  br label %for.body, !dbg !19
12
13for.body:                                         ; preds = %for.body, %entry
14; CHECK:     loop0(
15; CHECK-NOT: add({{r[0-9]*}}, #
16; CHECK:     endloop0
17  %arrayidx.phi = phi i32* [ %a, %entry ], [ %arrayidx.inc, %for.body ]
18  %i.02 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
19  %b.addr.01 = phi i32* [ %b, %entry ], [ %incdec.ptr, %for.body ]
20  %incdec.ptr = getelementptr inbounds i32, i32* %b.addr.01, i32 1, !dbg !21
21  tail call void @llvm.dbg.value(metadata i32* %incdec.ptr, i64 0, metadata !14, metadata !DIExpression()), !dbg !21
22  %0 = load i32, i32* %b.addr.01, align 4, !dbg !21
23  store i32 %0, i32* %arrayidx.phi, align 4, !dbg !21
24  %inc = add nsw i32 %i.02, 1, !dbg !26
25  tail call void @llvm.dbg.value(metadata i32 %inc, i64 0, metadata !15, metadata !DIExpression()), !dbg !26
26  %exitcond = icmp eq i32 %inc, 10, !dbg !19
27  %arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1
28  br i1 %exitcond, label %for.end, label %for.body, !dbg !19
29
30for.end:                                          ; preds = %for.body
31  ret void, !dbg !27
32}
33
34declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
35
36
37!llvm.dbg.cu = !{!0}
38!llvm.module.flags = !{!29}
39
40!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "QuIC LLVM Hexagon Clang version 6.1-pre-unknown, (git://git-hexagon-aus.quicinc.com/llvm/clang-mainline.git e9382867661454cdf44addb39430741578e9765c) (llvm/llvm-mainline.git 36412bb1fcf03ed426d4437b41198bae066675ac)", isOptimized: true, emissionKind: FullDebug, file: !28, enums: !2, retainedTypes: !2, globals: !2)
41!2 = !{}
42!5 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 1, file: !28, scope: null, type: !7, retainedNodes: !11)
43!6 = !DIFile(filename: "hwloop-dbg.c", directory: "/usr2/kparzysz/s.hex/t")
44!7 = !DISubroutineType(types: !8)
45!8 = !{null, !9, !9}
46!9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !10)
47!10 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
48!11 = !{!13, !14, !15}
49!13 = !DILocalVariable(name: "a", line: 1, arg: 1, scope: !5, file: !6, type: !9)
50!14 = !DILocalVariable(name: "b", line: 1, arg: 2, scope: !5, file: !6, type: !9)
51!15 = !DILocalVariable(name: "i", line: 2, scope: !16, file: !6, type: !10)
52!16 = distinct !DILexicalBlock(line: 1, column: 26, file: !28, scope: !5)
53!17 = !DILocation(line: 1, column: 15, scope: !5)
54!18 = !DILocation(line: 1, column: 23, scope: !5)
55!19 = !DILocation(line: 3, column: 8, scope: !20)
56!20 = distinct !DILexicalBlock(line: 3, column: 3, file: !28, scope: !16)
57!21 = !DILocation(line: 4, column: 5, scope: !22)
58!22 = distinct !DILexicalBlock(line: 3, column: 28, file: !28, scope: !20)
59!26 = !DILocation(line: 3, column: 23, scope: !20)
60!27 = !DILocation(line: 6, column: 1, scope: !16)
61!28 = !DIFile(filename: "hwloop-dbg.c", directory: "/usr2/kparzysz/s.hex/t")
62!29 = !{i32 1, !"Debug Info Version", i32 3}
63!30 = !{i32 0}
64