1 ; Test that BDCE doesn't destroy llvm.dbg.value's argument. 2 ; RUN: opt -bdce %s -S | FileCheck %s 3 4 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5 target triple = "x86_64-unknown-linux-gnu" 6 7 ; CHECK: define void @f() 8 ; CHECK-NEXT: entry: 9 ; CHECK-NEXT: tail call void (...) @h() 10 ; CHECK-NEXT: %[[CALL:.*]] = tail call i32 (...) @g() 11 ; CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 %[[CALL:.*]] 12 13 define void @f() !dbg !6 { 14 entry: 15 tail call void (...) @h(), !dbg !9 16 %call = tail call i32 (...) @g(), !dbg !10 17 tail call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !13), !dbg !14 18 tail call void (...) @h(), !dbg !15 19 ret void, !dbg !16 20 } 21 22 declare void @h(...) 23 declare i32 @g(...) 24 declare void @llvm.dbg.value(metadata, metadata, metadata) 25 26 !llvm.dbg.cu = !{!0} 27 !llvm.module.flags = !{!3, !4} 28 !llvm.ident = !{!5} 29 30 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 288665) (llvm/trunk 288725)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 31 !1 = !DIFile(filename: "patatino.c", directory: "/home/davide/work/llvm/build-clang/bin") 32 !2 = !{} 33 !3 = !{i32 2, !"Dwarf Version", i32 4} 34 !4 = !{i32 2, !"Debug Info Version", i32 3} 35 !5 = !{!"clang version 4.0.0 (trunk 288665) (llvm/trunk 288725)"} 36 !6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 3, type: !7, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: false, unit: !0, retainedNodes: !2) 37 !7 = !DISubroutineType(types: !8) 38 !8 = !{null} 39 !9 = !DILocation(line: 4, column: 3, scope: !6) 40 !10 = !DILocation(line: 5, column: 11, scope: !6) 41 !11 = !DILocalVariable(name: "a", scope: !6, file: !1, line: 5, type: !12) 42 !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 43 !13 = !DIExpression() 44 !14 = !DILocation(line: 5, column: 7, scope: !6) 45 !15 = !DILocation(line: 6, column: 3, scope: !6) 46 !16 = !DILocation(line: 7, column: 1, scope: !6) 47
