1; RUN: opt %s -S -o - -passes=instcombine \ 2; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg" 3; RUN: opt --try-experimental-debuginfo-iterators %s -S -o - -passes=instcombine \ 4; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg" 5 6;; Hand-written (the debug info doesn't necessarily make sense and isn't fully 7;; formed). Test salvaging a dbg.assign value and address. Checks and comments 8;; are inline. 9 10define dso_local void @fun(i32 %x, i32 %y, ptr %p) !dbg !7 { 11entry: 12 %add = add nsw i32 %x, 1, !dbg !22 13 call void @llvm.dbg.assign(metadata i32 %add, metadata !14, metadata !DIExpression(), metadata !28, metadata ptr %p, metadata !DIExpression()), !dbg !16 14;; %add is salvaged. 15; CHECK: #dbg_assign(i32 %x,{{.+}}!DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value),{{.+}}, ptr %p, !DIExpression(), 16 17 %add1 = add nsw i32 %x, %y, !dbg !29 18 call void @llvm.dbg.assign(metadata i32 %add1, metadata !32, metadata !DIExpression(), metadata !31, metadata ptr %p, metadata !DIExpression()), !dbg !16 19;; %add1 is salvaged using a variadic expression. 20; CHECK-NEXT: #dbg_assign(!DIArgList(i32 %x, i32 %y), ![[#]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_stack_value), ![[#]], ptr %p, !DIExpression(), 21 22 %arrayidx0 = getelementptr inbounds i32, ptr %p, i32 0 23 call void @llvm.dbg.assign(metadata i32 %x, metadata !14, metadata !DIExpression(), metadata !17, metadata ptr %arrayidx0, metadata !DIExpression()), !dbg !16 24;; %arrayidx0 is salvaged (zero offset, so the gep is just replaced with %p). 25; CHECK-NEXT: #dbg_assign(i32 %x,{{.+}}, !DIExpression(),{{.+}}, ptr %p, !DIExpression(), 26 27 %arrayidx1 = getelementptr inbounds i32, ptr %p, i32 1 28 call void @llvm.dbg.assign(metadata i32 %x, metadata !33, metadata !DIExpression(), metadata !18, metadata ptr %arrayidx1, metadata !DIExpression()), !dbg !16 29;; %arrayidx1 is salvaged. 30; CHECK-NEXT: #dbg_assign(i32 %x,{{.+}}, !DIExpression(),{{.+}}, ptr %p, !DIExpression(DW_OP_plus_uconst, 4), 31 32 %arrayidx2 = getelementptr inbounds i32, ptr %p, i32 %x 33 call void @llvm.dbg.assign(metadata i32 %x, metadata !34, metadata !DIExpression(), metadata !19, metadata ptr %arrayidx2, metadata !DIExpression()), !dbg !16 34;; Variadic DIExpressions for dbg.assign address component is not supported - 35;; set poison. 36; CHECK-NEXT: #dbg_assign(i32 %x,{{.+}}, !DIExpression(),{{.+}}, ptr poison, !DIExpression(), 37 38 ret void 39} 40 41declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) 42 43!llvm.dbg.cu = !{!0} 44!llvm.module.flags = !{!2, !3, !4, !5, !1000} 45!llvm.ident = !{!6} 46 47!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 14.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) 48!1 = !DIFile(filename: "test.cpp", directory: "/") 49!2 = !{i32 7, !"Dwarf Version", i32 5} 50!3 = !{i32 2, !"Debug Info Version", i32 3} 51!4 = !{i32 1, !"wchar_size", i32 4} 52!5 = !{i32 7, !"uwtable", i32 1} 53!6 = !{!"clang version 14.0.0"} 54!7 = distinct !DISubprogram(name: "fun", linkageName: "fun", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11) 55!8 = !DISubroutineType(types: !9) 56!9 = !{null, !10, !10} 57!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 58!11 = !{!12, !13, !14} 59!12 = !DILocalVariable(name: "x", arg: 1, scope: !7, file: !1, line: 2, type: !10) 60!13 = !DILocalVariable(name: "y", arg: 2, scope: !7, file: !1, line: 2, type: !10) 61!14 = !DILocalVariable(name: "Local", scope: !7, file: !1, line: 3, type: !10) 62!16 = !DILocation(line: 0, scope: !7) 63!17 = distinct !DIAssignID() 64!18 = distinct !DIAssignID() 65!19 = distinct !DIAssignID() 66!21 = !DILocation(line: 3, column: 3, scope: !7) 67!22 = !DILocation(line: 3, column: 17, scope: !7) 68!28 = distinct !DIAssignID() 69!29 = !DILocation(line: 4, column: 13, scope: !7) 70!31 = distinct !DIAssignID() 71!32 = !DILocalVariable(name: "Local1", scope: !7, file: !1, line: 3, type: !10) 72!33 = !DILocalVariable(name: "Local2", scope: !7, file: !1, line: 3, type: !10) 73!34 = !DILocalVariable(name: "Local3", scope: !7, file: !1, line: 3, type: !10) 74!35 = !DILocalVariable(name: "Local4", scope: !7, file: !1, line: 3, type: !10) 75!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true} 76