| ; Test that BDCE doesn't destroy llvm.dbg.value's argument. |
| ; RUN: opt -passes=bdce %s -S | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; CHECK: define void @f() |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: tail call void (...) @h() |
| ; CHECK-NEXT: %[[CALL:.*]] = tail call i32 (...) @g() |
| ; CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 %[[CALL:.*]] |
| |
| define void @f() !dbg !6 { |
| entry: |
| tail call void (...) @h(), !dbg !9 |
| %call = tail call i32 (...) @g(), !dbg !10 |
| tail call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !13), !dbg !14 |
| tail call void (...) @h(), !dbg !15 |
| ret void, !dbg !16 |
| } |
| |
| declare void @h(...) |
| declare i32 @g(...) |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4} |
| !llvm.ident = !{!5} |
| |
| !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) |
| !1 = !DIFile(filename: "patatino.c", directory: "/home/davide/work/llvm/build-clang/bin") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{!"clang version 4.0.0 (trunk 288665) (llvm/trunk 288725)"} |
| !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) |
| !7 = !DISubroutineType(types: !8) |
| !8 = !{null} |
| !9 = !DILocation(line: 4, column: 3, scope: !6) |
| !10 = !DILocation(line: 5, column: 11, scope: !6) |
| !11 = !DILocalVariable(name: "a", scope: !6, file: !1, line: 5, type: !12) |
| !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !13 = !DIExpression() |
| !14 = !DILocation(line: 5, column: 7, scope: !6) |
| !15 = !DILocation(line: 6, column: 3, scope: !6) |
| !16 = !DILocation(line: 7, column: 1, scope: !6) |