c672ba7dde
With intrinsics representing debug-info, we just clone all the intrinsics when inlining a function and don't think about it any further. With non-instruction debug-info however we need to be a bit more careful and manually move the debug-info from one place to another. For the most part, this means keeping a "cursor" during block cloning of where we last copied debug-info from, and performing debug-info copying whenever we successfully clone another instruction. There are several utilities in LLVM for doing this, all of which now need to manually call cloneDebugInfo. The testing story for this is not well covered as we could rely on normal instruction-cloning mechanisms to do all the hard stuff. Thus, I've added a few tests to explicitly test dbg.value behaviours, ahead of them becoming not-instructions.
103 lines
5.0 KiB
LLVM
103 lines
5.0 KiB
LLVM
; RUN: opt -passes=callsite-splitting -S < %s | FileCheck %s --implicit-check-not=dbg.value
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; RUN: opt -passes=callsite-splitting -S < %s --try-experimental-debuginfo-iterators | FileCheck %s --implicit-check-not=dbg.value
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;; Test that DebugLocs are preserved, and that dbg.values are duplicated.
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; CHECK: declare void @llvm.dbg.value(metadata,
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; CHECK-LABEL: @test1
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; CHECK: call void @llvm.dbg.value(metadata i32 0,
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; CHECK-NEXT: [[R1:%.+]] = call i32 @callee(i32 0, i32 %dd), !dbg [[DBG1:!.*]]
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; CHECK: call void @llvm.dbg.value(metadata i32 0,
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; CHECK-NEXT: [[R2:%.+]] = call i32 @callee(i32 1, i32 %dd), !dbg [[DBG1]]
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; CHECK-LABEL: CallSite:
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; CHECK-NEXT: phi i32 [ [[R2]], %land.rhs.split ], [ [[R1]], %entry.split ], !dbg [[DBG1]]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 1,
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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define i32 @test1(ptr dereferenceable(4) %cc, i32 %dd) !dbg !6 {
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entry:
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br i1 undef, label %CallSite, label %land.rhs
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land.rhs: ; preds = %entry
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br label %CallSite
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CallSite: ; preds = %land.rhs, %entry
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%pv = phi i32 [ 0, %entry ], [ 1, %land.rhs ]
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call void @llvm.dbg.value(metadata i32 0, metadata !9, metadata !DIExpression()), !dbg !18
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%call = call i32 @callee(i32 %pv, i32 %dd), !dbg !18
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call void @llvm.dbg.value(metadata i32 1, metadata !9, metadata !DIExpression()), !dbg !18
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ret i32 %call
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}
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; CHECK-LABEL: @test2
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; CHECK: [[LV1:%.*]] = load i32, ptr %ptr, align 4, !dbg [[DBG_LV:!.*]]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 0,
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; CHECK-NEXT: [[R1:%.+]] = call i32 @callee(i32 0, i32 10), !dbg [[DBG_CALL:!.*]]
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; CHECK: [[LV2:%.*]] = load i32, ptr %ptr, align 4, !dbg [[DBG_LV]]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 0,
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; CHECK-NEXT: [[R2:%.+]] = call i32 @callee(i32 0, i32 %i), !dbg [[DBG_CALL]]
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; CHECK-LABEL: CallSite:
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; CHECK-NEXT: phi i32 [ [[LV1]], %Header.split ], [ [[LV2]], %TBB.split ], !dbg [[DBG_LV]]
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; CHECK-NEXT: phi i32 [ [[R1]], %Header.split ], [ [[R2]], %TBB.split ], !dbg [[DBG_CALL]]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 1,
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define void @test2(ptr %ptr, i32 %i) !dbg !19 {
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Header:
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%tobool = icmp ne i32 %i, 10
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br i1 %tobool, label %TBB, label %CallSite
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TBB: ; preds = %Header
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br i1 undef, label %CallSite, label %End
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CallSite: ; preds = %TBB, %Header
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%lv = load i32, ptr %ptr, align 4, !dbg !25
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call void @llvm.dbg.value(metadata i32 0, metadata !21, metadata !DIExpression()), !dbg !26
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%cv = call i32 @callee(i32 0, i32 %i), !dbg !26
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call void @llvm.dbg.value(metadata i32 1, metadata !21, metadata !DIExpression()), !dbg !26
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%sub = sub nsw i32 %lv, %cv
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br label %End
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End: ; preds = %CallSite, %TBB
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ret void
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}
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define i32 @callee(i32 %aa, i32 %bb) {
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entry:
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%add = add nsw i32 %aa, %bb
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ret i32 %add
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}
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!llvm.dbg.cu = !{!0}
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!llvm.debugify = !{!3, !4}
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!llvm.module.flags = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "<stdin>", directory: "/")
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!2 = !{}
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!3 = !{i32 23}
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!4 = !{i32 11}
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!5 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = distinct !DISubprogram(name: "test", linkageName: "test", scope: null, file: !1, line: 3, type: !7, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !0, retainedNodes: !8)
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!7 = !DISubroutineType(types: !2)
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!8 = !{!9, !11, !13, !15, !16, !17}
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!9 = !DILocalVariable(name: "2", scope: !6, file: !1, line: 3, type: !10)
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!10 = !DIBasicType(name: "ty64", size: 64, encoding: DW_ATE_unsigned)
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!11 = !DILocalVariable(name: "3", scope: !6, file: !1, line: 5, type: !12)
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!12 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
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!13 = !DILocalVariable(name: "4", scope: !6, file: !1, line: 6, type: !14)
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!14 = !DIBasicType(name: "ty8", size: 8, encoding: DW_ATE_unsigned)
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!15 = !DILocalVariable(name: "5", scope: !6, file: !1, line: 9, type: !12)
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!16 = !DILocalVariable(name: "6", scope: !6, file: !1, line: 10, type: !12)
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!17 = !DILocalVariable(name: "7", scope: !6, file: !1, line: 11, type: !10)
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!18 = !DILocation(line: 10, column: 1, scope: !6)
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!19 = distinct !DISubprogram(name: "test_add_new_phi", linkageName: "test_add_new_phi", scope: null, file: !1, line: 14, type: !7, isLocal: false, isDefinition: true, scopeLine: 14, isOptimized: true, unit: !0, retainedNodes: !20)
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!20 = !{!21, !22, !23, !24}
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!21 = !DILocalVariable(name: "8", scope: !19, file: !1, line: 14, type: !14)
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!22 = !DILocalVariable(name: "9", scope: !19, file: !1, line: 17, type: !10)
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!23 = !DILocalVariable(name: "10", scope: !19, file: !1, line: 18, type: !12)
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!24 = !DILocalVariable(name: "11", scope: !19, file: !1, line: 20, type: !12)
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!25 = !DILocation(line: 18, column: 1, scope: !19)
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!26 = !DILocation(line: 19, column: 1, scope: !19)
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