1; RUN: opt -deadargelim -S < %s | FileCheck %s 2; PR14016 3 4; Built with clang (then manually running -mem2reg with opt) from the following source: 5; static void f1(int, ...) { 6; } 7; 8; void f2() { 9; f1(1); 10; } 11 12; Test both varargs removal and removal of a traditional dead arg together, to 13; test both the basic functionality, and a particular wrinkle involving updating 14; the function->debug info mapping on update to ensure it's accurate when used 15; again for the next removal. 16 17; CHECK: define internal void @_ZL2f1iz({{.*}} !dbg [[SP:![0-9]+]] 18; CHECK: [[SP]] = distinct !DISubprogram(name: "f1" 19 20; Check that debug info metadata for subprograms stores pointers to 21; updated LLVM functions. 22 23; Function Attrs: uwtable 24define void @_Z2f2v() #0 !dbg !4 { 25entry: 26 call void (i32, ...) @_ZL2f1iz(i32 1), !dbg !15 27 ret void, !dbg !16 28} 29 30; Function Attrs: nounwind uwtable 31define internal void @_ZL2f1iz(i32, ...) #1 !dbg !8 { 32entry: 33 call void @llvm.dbg.value(metadata i32 %0, metadata !17, metadata !18), !dbg !19 34 ret void, !dbg !20 35} 36 37; Function Attrs: nounwind readnone 38declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 39 40; Function Attrs: nounwind readnone 41declare void @llvm.dbg.value(metadata, metadata, metadata) #2 42 43attributes #0 = { uwtable "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" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 44attributes #1 = { nounwind uwtable "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" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 45attributes #2 = { nounwind readnone } 46 47!llvm.dbg.cu = !{!0} 48!llvm.module.flags = !{!12, !13} 49!llvm.ident = !{!14} 50 51!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 52!1 = !DIFile(filename: "dbg.cpp", directory: "/tmp/dbginfo") 53!2 = !{} 54!4 = distinct !DISubprogram(name: "f2", linkageName: "_Z2f2v", line: 4, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 4, file: !1, scope: !5, type: !6, retainedNodes: !2) 55!5 = !DIFile(filename: "dbg.cpp", directory: "/tmp/dbginfo") 56!6 = !DISubroutineType(types: !7) 57!7 = !{null} 58!8 = distinct !DISubprogram(name: "f1", linkageName: "_ZL2f1iz", line: 1, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !9, retainedNodes: !2) 59!9 = !DISubroutineType(types: !10) 60!10 = !{null, !11, null} 61!11 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 62!12 = !{i32 2, !"Dwarf Version", i32 4} 63!13 = !{i32 2, !"Debug Info Version", i32 3} 64!14 = !{!"clang version 3.6.0 "} 65!15 = !DILocation(line: 5, column: 3, scope: !4) 66!16 = !DILocation(line: 6, column: 1, scope: !4) 67!17 = !DILocalVariable(name: "", line: 1, arg: 1, scope: !8, file: !5, type: !11) 68!18 = !DIExpression() 69!19 = !DILocation(line: 1, column: 19, scope: !8) 70!20 = !DILocation(line: 2, column: 1, scope: !8) 71