diff options
Diffstat (limited to 'test/CodeGen/BPF/warn-stack.ll')
| -rw-r--r-- | test/CodeGen/BPF/warn-stack.ll | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/test/CodeGen/BPF/warn-stack.ll b/test/CodeGen/BPF/warn-stack.ll new file mode 100644 index 000000000000..5a579d28554a --- /dev/null +++ b/test/CodeGen/BPF/warn-stack.ll @@ -0,0 +1,76 @@ +; RUN: not llc -march=bpfel < %s 2>&1 >/dev/null | FileCheck %s + +;; CHECK-NOT: nowarn +define void @nowarn() local_unnamed_addr #0 !dbg !6 { + %1 = alloca [504 x i8], align 1 + %2 = getelementptr inbounds [504 x i8], [504 x i8]* %1, i64 0, i64 0, !dbg !15 + call void @llvm.lifetime.start.p0i8(i64 504, i8* nonnull %2) #4, !dbg !15 + tail call void @llvm.dbg.declare(metadata [504 x i8]* %1, metadata !10, metadata !16), !dbg !17 + call void @doit(i8* nonnull %2) #4, !dbg !18 + call void @llvm.lifetime.end.p0i8(i64 504, i8* nonnull %2) #4, !dbg !19 + ret void, !dbg !19 +} + +; Function Attrs: argmemonly nounwind +declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1 + +; Function Attrs: nounwind readnone +declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 + +declare void @doit(i8*) local_unnamed_addr #3 + +; Function Attrs: argmemonly nounwind +declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1 + +; CHECK: error: warn_stack.c +; CHECK: BPF stack limit +define void @warn() local_unnamed_addr #0 !dbg !20 { + %1 = alloca [512 x i8], align 1 + %2 = getelementptr inbounds [512 x i8], [512 x i8]* %1, i64 0, i64 0, !dbg !26 + call void @llvm.lifetime.start.p0i8(i64 512, i8* nonnull %2) #4, !dbg !26 + tail call void @llvm.dbg.declare(metadata [512 x i8]* %1, metadata !22, metadata !16), !dbg !27 + call void @doit(i8* nonnull %2) #4, !dbg !28 + call void @llvm.lifetime.end.p0i8(i64 512, i8* nonnull %2) #4, !dbg !29 + ret void, !dbg !29 +} + +attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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" } +attributes #1 = { argmemonly nounwind } +attributes #2 = { nounwind readnone } +attributes #3 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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" } +attributes #4 = { nounwind } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!3, !4} +!llvm.ident = !{!5} + +!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) +!1 = !DIFile(filename: "warn_stack.c", directory: "/w/llvm/bld") +!2 = !{} +!3 = !{i32 2, !"Dwarf Version", i32 4} +!4 = !{i32 2, !"Debug Info Version", i32 3} +!5 = !{!"clang version 5.0.0 (trunk 292141) (llvm/trunk 292156)"} +!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, variables: !9) +!7 = !DISubroutineType(types: !8) +!8 = !{null} +!9 = !{!10} +!10 = !DILocalVariable(name: "buf", scope: !6, file: !1, line: 4, type: !11) +!11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 4088, elements: !13) +!12 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) +!13 = !{!14} +!14 = !DISubrange(count: 504) +!15 = !DILocation(line: 4, column: 2, scope: !6) +!16 = !DIExpression() +!17 = !DILocation(line: 4, column: 7, scope: !6) +!18 = !DILocation(line: 5, column: 2, scope: !6) +!19 = !DILocation(line: 6, column: 1, scope: !6) +!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, variables: !21) +!21 = !{!22} +!22 = !DILocalVariable(name: "buf", scope: !20, file: !1, line: 9, type: !23) +!23 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 4096, elements: !24) +!24 = !{!25} +!25 = !DISubrange(count: 512) +!26 = !DILocation(line: 9, column: 2, scope: !20) +!27 = !DILocation(line: 9, column: 7, scope: !20) +!28 = !DILocation(line: 10, column: 2, scope: !20) +!29 = !DILocation(line: 11, column: 1, scope: !20) |