1; RUN: not llc -march=bpfel < %s 2>&1 >/dev/null | FileCheck %s
2
3;; CHECK-NOT: nowarn
4define void @nowarn() local_unnamed_addr #0 !dbg !6 {
5  %1 = alloca [504 x i8], align 1
6  %2 = getelementptr inbounds [504 x i8], [504 x i8]* %1, i64 0, i64 0, !dbg !15
7  call void @llvm.lifetime.start.p0i8(i64 504, i8* nonnull %2) #4, !dbg !15
8  tail call void @llvm.dbg.declare(metadata [504 x i8]* %1, metadata !10, metadata !16), !dbg !17
9  call void @doit(i8* nonnull %2) #4, !dbg !18
10  call void @llvm.lifetime.end.p0i8(i64 504, i8* nonnull %2) #4, !dbg !19
11  ret void, !dbg !19
12}
13
14; Function Attrs: argmemonly nounwind
15declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
16
17; Function Attrs: nounwind readnone
18declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
19
20declare void @doit(i8*) local_unnamed_addr #3
21
22; Function Attrs: argmemonly nounwind
23declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
24
25; CHECK: error: warn_stack.c
26; CHECK: BPF stack limit
27define void @warn() local_unnamed_addr #0 !dbg !20 {
28  %1 = alloca [512 x i8], align 1
29  %2 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 0, !dbg !26
30  call void @llvm.lifetime.start.p0i8(i64 512, i8* nonnull %2) #4, !dbg !26
31  tail call void @llvm.dbg.declare(metadata [512 x i8]* %1, metadata !22, metadata !16), !dbg !27
32  call void @doit(i8* nonnull %2) #4, !dbg !28
33  call void @llvm.lifetime.end.p0i8(i64 512, i8* nonnull %2) #4, !dbg !29
34  ret void, !dbg !29
35}
36
37attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
38attributes #1 = { argmemonly nounwind }
39attributes #2 = { nounwind readnone }
40attributes #3 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
41attributes #4 = { nounwind }
42
43!llvm.dbg.cu = !{!0}
44!llvm.module.flags = !{!3, !4}
45!llvm.ident = !{!5}
46
47!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 (trunk 292141) (llvm/trunk 292156)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
48!1 = !DIFile(filename: "warn_stack.c", directory: "/w/llvm/bld")
49!2 = !{}
50!3 = !{i32 2, !"Dwarf Version", i32 4}
51!4 = !{i32 2, !"Debug Info Version", i32 3}
52!5 = !{!"clang version 5.0.0 (trunk 292141) (llvm/trunk 292156)"}
53!6 = distinct !DISubprogram(name: "nowarn", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !9)
54!7 = !DISubroutineType(types: !8)
55!8 = !{null}
56!9 = !{!10}
57!10 = !DILocalVariable(name: "buf", scope: !6, file: !1, line: 4, type: !11)
58!11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 4088, elements: !13)
59!12 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
60!13 = !{!14}
61!14 = !DISubrange(count: 504)
62!15 = !DILocation(line: 4, column: 2, scope: !6)
63!16 = !DIExpression()
64!17 = !DILocation(line: 4, column: 7, scope: !6)
65!18 = !DILocation(line: 5, column: 2, scope: !6)
66!19 = !DILocation(line: 6, column: 1, scope: !6)
67!20 = distinct !DISubprogram(name: "warn", scope: !1, file: !1, line: 7, type: !7, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !21)
68!21 = !{!22}
69!22 = !DILocalVariable(name: "buf", scope: !20, file: !1, line: 9, type: !23)
70!23 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 4096, elements: !24)
71!24 = !{!25}
72!25 = !DISubrange(count: 512)
73!26 = !DILocation(line: 9, column: 2, scope: !20)
74!27 = !DILocation(line: 9, column: 7, scope: !20)
75!28 = !DILocation(line: 10, column: 2, scope: !20)
76!29 = !DILocation(line: 11, column: 1, scope: !20)
77