1; RUN: llc -mtriple=x86_64-unknown-unknown -start-after=codegenprepare \ 2; RUN: -stop-before finalize-isel %s -o - \ 3; RUN: -experimental-debug-variable-locations=false \ 4; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE 5; RUN: llc -mtriple=x86_64-unknown-unknown -start-after=codegenprepare \ 6; RUN: -stop-before finalize-isel %s -o - \ 7; RUN: -experimental-debug-variable-locations=true \ 8; RUN: | FileCheck %s --check-prefixes=CHECK,INSTRREF 9 10; RUN: llc -mtriple=x86_64-unknown-unknown -start-after=codegenprepare \ 11; RUN: -stop-before finalize-isel %s -o - \ 12; RUN: -experimental-debug-variable-locations=false --try-experimental-debuginfo-iterators \ 13; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE 14 15; Test that the dbg.value for %baz, which doesn't exist in the 'next' bb, 16; can be salvaged back to the underlying argument vreg. 17 18; CHECK: ![[AAAVAR:.*]] = !DILocalVariable(name: "aaa", 19; CHECK-LABEL: bb.0.entry: 20; INSTRREF: DBG_PHI $rdi, 1 21; CHECK-LABEL: bb.1.next: 22; INSTRREF: DBG_INSTR_REF ![[AAAVAR]], {{.+}}, dbg-instr-ref(1, 0) 23; DBGVALUE: DBG_VALUE %{{[0-9]+}}, $noreg, ![[AAAVAR]] 24 25target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 26target triple = "x86_64-linux-gnu" 27 28define i8 @f(ptr %foo) local_unnamed_addr !dbg !6 { 29entry: 30 %bar = getelementptr i32, ptr %foo, i32 4 31 %quux = load i8, ptr %bar 32 br label %next 33 34next: ; preds = %entry 35 tail call void @llvm.dbg.value(metadata ptr %bar, metadata !15, metadata !DIExpression()), !dbg !30 36 %xyzzy = add i8 %quux, 123 37 br label %fin 38 39fin: ; preds = %next 40 %trains = getelementptr i32, ptr %foo, i32 3 41 %cars = load i8, ptr %trains 42 %ret = add i8 %xyzzy, %cars 43 ret i8 %ret 44} 45 46; Function Attrs: nounwind readnone speculatable 47declare void @llvm.dbg.value(metadata, metadata, metadata) #0 48 49attributes #0 = { nounwind readnone speculatable } 50 51!llvm.dbg.cu = !{!0} 52!llvm.module.flags = !{!25, !26, !27, !28} 53!llvm.ident = !{!29} 54 55!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 56!1 = !DIFile(filename: "test.c", directory: ".") 57!2 = !{} 58!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 18, type: !7, scopeLine: 19, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !14) 59!7 = !DISubroutineType(types: !8) 60!8 = !{!13} 61!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_unsigned) 62!14 = !{!15} 63!15 = !DILocalVariable(name: "aaa", scope: !6, file: !1, line: 18, type: !13) 64!25 = !{i32 2, !"Dwarf Version", i32 4} 65!26 = !{i32 2, !"Debug Info Version", i32 3} 66!27 = !{i32 1, !"wchar_size", i32 4} 67!28 = !{i32 7, !"PIC Level", i32 2} 68!29 = !{!"clang"} 69!30 = !DILocation(line: 18, column: 14, scope: !6) 70