094572701d
This patch makes the final major change of the RemoveDIs project, changing the default IR output from debug intrinsics to debug records. This is expected to break a large number of tests: every single one that tests for uses or declarations of debug intrinsics and does not explicitly disable writing records. If this patch has broken your downstream tests (or upstream tests on a configuration I wasn't able to run): 1. If you need to immediately unblock a build, pass `--write-experimental-debuginfo=false` to LLVM's option processing for all failing tests (remember to use `-mllvm` for clang/flang to forward arguments to LLVM). 2. For most test failures, the changes are trivial and mechanical, enough that they can be done by script; see the migration guide for a guide on how to do this: https://llvm.org/docs/RemoveDIsDebugInfo.html#test-updates 3. If any tests fail for reasons other than FileCheck check lines that need updating, such as assertion failures, that is most likely a real bug with this patch and should be reported as such. For more information, see the recent PSA: https://discourse.llvm.org/t/psa-ir-output-changing-from-debug-intrinsics-to-debug-records/79578
115 lines
5.2 KiB
LLVM
115 lines
5.2 KiB
LLVM
; RUN: opt -passes=bpf-preserve-static-offset -mtriple=bpf-pc-linux -S -o - %s | FileCheck %s
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;
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; Source:
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; #define __ctx __attribute__((preserve_static_offset))
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; #define __pai __attribute__((preserve_access_index))
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;
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; struct bar {
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; int a;
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; int b;
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; } __pai;
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;
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; struct buz {
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; int _1;
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; struct bar *b;
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; } __pai __ctx;
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;
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; void foo(struct buz *p) {
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; p->b->b = 42;
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; }
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;
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;
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; Compilation flag:
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; clang -cc1 -O2 -triple bpf -S -emit-llvm -disable-llvm-passes \
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; -debug-info-kind=limited -o - \
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; | opt -passes=function(sroa) -S -o -
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%struct.buz = type { i32, ptr }
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%struct.bar = type { i32, i32 }
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; Function Attrs: nounwind
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define dso_local void @foo(ptr noundef %p) #0 !dbg !5 {
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entry:
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call void @llvm.dbg.value(metadata ptr %p, metadata !20, metadata !DIExpression()), !dbg !21
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%0 = call ptr @llvm.preserve.static.offset(ptr %p), !dbg !22
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%1 = call ptr @llvm.preserve.struct.access.index.p0.p0(ptr elementtype(%struct.buz) %0, i32 1, i32 1), !dbg !22, !llvm.preserve.access.index !9
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%2 = load ptr, ptr %1, align 8, !dbg !22, !tbaa !23
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%3 = call ptr @llvm.preserve.struct.access.index.p0.p0(ptr elementtype(%struct.bar) %2, i32 1, i32 1), !dbg !29, !llvm.preserve.access.index !15
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store i32 42, ptr %3, align 4, !dbg !30, !tbaa !31
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ret void, !dbg !33
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}
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; CHECK: define dso_local void @foo(ptr noundef %[[p:.*]]) {{.*}} {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: #dbg_value
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; CHECK-NEXT: %[[v5:.*]] = call ptr (ptr, i1, i8, i8, i8, i1, ...)
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; CHECK-SAME: @llvm.bpf.getelementptr.and.load.p0
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; CHECK-SAME: (ptr readonly elementtype(%struct.buz) %[[p]],
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; CHECK-SAME: i1 false, i8 0, i8 1, i8 3, i1 true, i32 immarg 0, i32 immarg 1)
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; CHECK-SAME: #[[v6:.*]], !tbaa
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; CHECK-NEXT: %[[v8:.*]] =
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; CHECK-SAME: call ptr @llvm.preserve.struct.access.index.p0.p0
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; CHECK-SAME: (ptr elementtype(%struct.bar) %[[v5]], i32 1, i32 1),
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; CHECK-SAME: !dbg ![[#]], !llvm.preserve.access.index ![[#]]
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; CHECK-NEXT: store i32 42, ptr %[[v8]], align 4, !dbg ![[#]], !tbaa
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; CHECK-NEXT: ret void, !dbg
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; CHECK-NEXT: }
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; CHECK : attributes #[[v6]] = { memory(argmem: read) }
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; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
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declare ptr @llvm.preserve.static.offset(ptr readnone) #1
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; Function Attrs: nocallback nofree nosync nounwind willreturn memory(none)
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declare ptr @llvm.preserve.struct.access.index.p0.p0(ptr, i32 immarg, i32 immarg) #2
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; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
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attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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attributes #2 = { nocallback nofree nosync nounwind willreturn memory(none) }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3}
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!llvm.ident = !{!4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "some-file.c", directory: "/some/dir/")
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!2 = !{i32 2, !"Debug Info Version", i32 3}
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!3 = !{i32 1, !"wchar_size", i32 4}
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!4 = !{!"clang"}
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!5 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 14, type: !6, scopeLine: 14, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !19)
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!6 = !DISubroutineType(types: !7)
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!7 = !{null, !8}
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!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64)
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!9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "buz", file: !1, line: 9, size: 128, elements: !10)
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!10 = !{!11, !13}
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!11 = !DIDerivedType(tag: DW_TAG_member, name: "_1", scope: !9, file: !1, line: 10, baseType: !12, size: 32)
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !9, file: !1, line: 11, baseType: !14, size: 64, offset: 64)
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!14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !15, size: 64)
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!15 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "bar", file: !1, line: 4, size: 64, elements: !16)
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!16 = !{!17, !18}
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!17 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !15, file: !1, line: 5, baseType: !12, size: 32)
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!18 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !15, file: !1, line: 6, baseType: !12, size: 32, offset: 32)
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!19 = !{!20}
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!20 = !DILocalVariable(name: "p", arg: 1, scope: !5, file: !1, line: 14, type: !8)
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!21 = !DILocation(line: 0, scope: !5)
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!22 = !DILocation(line: 15, column: 6, scope: !5)
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!23 = !{!24, !28, i64 8}
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!24 = !{!"buz", !25, i64 0, !28, i64 8}
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!25 = !{!"int", !26, i64 0}
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!26 = !{!"omnipotent char", !27, i64 0}
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!27 = !{!"Simple C/C++ TBAA"}
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!28 = !{!"any pointer", !26, i64 0}
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!29 = !DILocation(line: 15, column: 9, scope: !5)
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!30 = !DILocation(line: 15, column: 11, scope: !5)
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!31 = !{!32, !25, i64 4}
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!32 = !{!"bar", !25, i64 0, !25, i64 4}
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!33 = !DILocation(line: 16, column: 1, scope: !5)
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