forked from OSchip/llvm-project
[BPF] fix flaky btf unit test static-var-derived-type.ll
The DataSecEentries is defined as an unordered_map since
order does not really matter.
std::unordered_map<std::string, std::unique_ptr<BTFKindDataSec>>
DataSecEntries;
This seems causing the test static-var-derived-type.ll flaky
as two sections ".bss" and ".readonly" have undeterministic
ordering when performing map iterating, which decides the
output assembly code sequence of BTF_KIND_DATASEC entries.
Fix the test to have only one data section to remove
flakiness.
Signed-off-by: Yonghong Song <yhs@fb.com>
llvm-svn: 356731
This commit is contained in:
Yonghong Song
parent
dc6c0cf94d
commit
a1ffe2fa49
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@ -6,32 +6,26 @@
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; static int * volatile v1;
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; static const int * volatile v2;
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; static volatile int_ptr v3 = 0;
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; static volatile const int_ptr v4 = 0;
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; long foo() { return (long)(v1 - v2 + v3 - v4); }
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; long foo() { return (long)(v1 - v2 + v3); }
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; Compilation flag:
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; clang -target bpf -O2 -g -S -emit-llvm test.c
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@v1 = internal global i32* null, align 8, !dbg !0
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@v2 = internal global i32* null, align 8, !dbg !8
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@v3 = internal global i32* null, align 8, !dbg !14
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@v4 = internal constant i32* null, align 8, !dbg !19
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; Function Attrs: norecurse nounwind
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define dso_local i64 @foo() local_unnamed_addr #0 !dbg !27 {
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%1 = load volatile i32*, i32** @v1, align 8, !dbg !29, !tbaa !30
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%2 = load volatile i32*, i32** @v2, align 8, !dbg !34, !tbaa !30
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%3 = ptrtoint i32* %1 to i64, !dbg !35
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%4 = ptrtoint i32* %2 to i64, !dbg !35
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%5 = sub i64 %3, %4, !dbg !35
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%6 = ashr exact i64 %5, 2, !dbg !35
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%7 = load volatile i32*, i32** @v3, align 8, !dbg !36, !tbaa !30
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%8 = getelementptr inbounds i32, i32* %7, i64 %6, !dbg !37
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%9 = load volatile i32*, i32** @v4, align 8, !dbg !38, !tbaa !30
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%10 = ptrtoint i32* %8 to i64, !dbg !39
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%11 = ptrtoint i32* %9 to i64, !dbg !39
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%12 = sub i64 %10, %11, !dbg !39
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%13 = ashr exact i64 %12, 2, !dbg !39
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ret i64 %13, !dbg !40
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define dso_local i64 @foo() local_unnamed_addr #0 !dbg !24 {
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%1 = load volatile i32*, i32** @v1, align 8, !dbg !26, !tbaa !27
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%2 = load volatile i32*, i32** @v2, align 8, !dbg !31, !tbaa !27
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%3 = ptrtoint i32* %1 to i64, !dbg !32
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%4 = ptrtoint i32* %2 to i64, !dbg !32
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%5 = sub i64 %3, %4, !dbg !32
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%6 = ashr exact i64 %5, 2, !dbg !32
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%7 = load volatile i32*, i32** @v3, align 8, !dbg !33, !tbaa !27
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%8 = getelementptr inbounds i32, i32* %7, i64 %6, !dbg !34
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%9 = ptrtoint i32* %8 to i64, !dbg !35
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ret i64 %9, !dbg !36
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}
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; CHECK: .section .BTF,"",@progbits
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@ -40,9 +34,9 @@ define dso_local i64 @foo() local_unnamed_addr #0 !dbg !27 {
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .long 24
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 288
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; CHECK-NEXT: .long 288
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; CHECK-NEXT: .long 95
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; CHECK-NEXT: .long 236
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; CHECK-NEXT: .long 236
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; CHECK-NEXT: .long 84
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; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 1)
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; CHECK-NEXT: .long 218103808 # 0xd000000
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; CHECK-NEXT: .long 2
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@ -90,20 +84,7 @@ define dso_local i64 @foo() local_unnamed_addr #0 !dbg !27 {
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; CHECK-NEXT: .long 234881024 # 0xe000000
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; CHECK-NEXT: .long 12
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 0 # BTF_KIND_CONST(id = 15)
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; CHECK-NEXT: .long 167772160 # 0xa000000
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; CHECK-NEXT: .long 12
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; CHECK-NEXT: .long 79 # BTF_KIND_VAR(id = 16)
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; CHECK-NEXT: .long 234881024 # 0xe000000
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; CHECK-NEXT: .long 15
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 82 # BTF_KIND_DATASEC(id = 17)
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; CHECK-NEXT: .long 251658241 # 0xf000001
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 16
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; CHECK-NEXT: .long v4
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; CHECK-NEXT: .long 8
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; CHECK-NEXT: .long 90 # BTF_KIND_DATASEC(id = 18)
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; CHECK-NEXT: .long 79 # BTF_KIND_DATASEC(id = 15)
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; CHECK-NEXT: .long 251658243 # 0xf000003
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 7
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@ -134,27 +115,23 @@ define dso_local i64 @foo() local_unnamed_addr #0 !dbg !27 {
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "v3" # string offset=76
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "v4" # string offset=79
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii ".rodata" # string offset=82
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii ".bss" # string offset=90
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; CHECK-NEXT: .ascii ".bss" # string offset=79
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; CHECK-NEXT: .byte 0
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attributes #0 = { norecurse 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" }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!23, !24, !25}
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!llvm.ident = !{!26}
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!llvm.module.flags = !{!20, !21, !22}
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!llvm.ident = !{!23}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "v1", scope: !2, file: !3, line: 2, type: !22, isLocal: true, isDefinition: true)
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!1 = distinct !DIGlobalVariable(name: "v1", scope: !2, file: !3, line: 2, type: !19, isLocal: true, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.20181009 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !7, nameTableKind: None)
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!3 = !DIFile(filename: "test.c", directory: "/home/yhs/work/tests/llvm/bugs")
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!4 = !{}
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!5 = !{!6}
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!6 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)
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!7 = !{!0, !8, !14, !19}
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!7 = !{!0, !8, !14}
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!8 = !DIGlobalVariableExpression(var: !9, expr: !DIExpression())
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!9 = distinct !DIGlobalVariable(name: "v2", scope: !2, file: !3, line: 3, type: !10, isLocal: true, isDefinition: true)
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!10 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !11)
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@ -166,25 +143,21 @@ attributes #0 = { norecurse nounwind "correctly-rounded-divide-sqrt-fp-math"="fa
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!16 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !17)
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!17 = !DIDerivedType(tag: DW_TAG_typedef, name: "int_ptr", file: !3, line: 1, baseType: !18)
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!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64)
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!19 = !DIGlobalVariableExpression(var: !20, expr: !DIExpression())
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!20 = distinct !DIGlobalVariable(name: "v4", scope: !2, file: !3, line: 5, type: !21, isLocal: true, isDefinition: true)
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!21 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !16)
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!22 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !18)
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!23 = !{i32 2, !"Dwarf Version", i32 4}
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!24 = !{i32 2, !"Debug Info Version", i32 3}
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!25 = !{i32 1, !"wchar_size", i32 4}
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!26 = !{!"clang version 8.0.20181009 "}
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!27 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 6, type: !28, isLocal: false, isDefinition: true, scopeLine: 6, isOptimized: true, unit: !2, retainedNodes: !4)
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!28 = !DISubroutineType(types: !5)
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!29 = !DILocation(line: 6, column: 28, scope: !27)
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!30 = !{!31, !31, i64 0}
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!31 = !{!"any pointer", !32, i64 0}
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!32 = !{!"omnipotent char", !33, i64 0}
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!33 = !{!"Simple C/C++ TBAA"}
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!34 = !DILocation(line: 6, column: 33, scope: !27)
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!35 = !DILocation(line: 6, column: 31, scope: !27)
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!36 = !DILocation(line: 6, column: 38, scope: !27)
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!37 = !DILocation(line: 6, column: 36, scope: !27)
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!38 = !DILocation(line: 6, column: 43, scope: !27)
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!39 = !DILocation(line: 6, column: 41, scope: !27)
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!40 = !DILocation(line: 6, column: 14, scope: !27)
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!19 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !18)
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!20 = !{i32 2, !"Dwarf Version", i32 4}
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!21 = !{i32 2, !"Debug Info Version", i32 3}
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!22 = !{i32 1, !"wchar_size", i32 4}
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!23 = !{!"clang version 8.0.20181009 "}
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!24 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 5, type: !25, isLocal: false, isDefinition: true, scopeLine: 5, isOptimized: true, unit: !2, retainedNodes: !4)
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!25 = !DISubroutineType(types: !5)
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!26 = !DILocation(line: 5, column: 28, scope: !24)
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!27 = !{!28, !28, i64 0}
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!28 = !{!"any pointer", !29, i64 0}
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!29 = !{!"omnipotent char", !30, i64 0}
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!30 = !{!"Simple C/C++ TBAA"}
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!31 = !DILocation(line: 5, column: 33, scope: !24)
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!32 = !DILocation(line: 5, column: 31, scope: !24)
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!33 = !DILocation(line: 5, column: 38, scope: !24)
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!34 = !DILocation(line: 5, column: 36, scope: !24)
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!35 = !DILocation(line: 5, column: 21, scope: !24)
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!36 = !DILocation(line: 5, column: 14, scope: !24)
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