| ; RUN: llc %s -stop-after=livedebugvars -o %t -experimental-debug-variable-locations=true |
| ; RUN: cat %t | FileCheck %s |
| ; |
| ; Test that we can emit debug info for large values that are split |
| ; up across multiple registers by the SelectionDAG type legalizer. |
| ; |
| ; // Compile with -O1 -m32. |
| ; long long foo (long long a, long long b) |
| ; { |
| ; long long res = b+1; |
| ; if ( a == b ) |
| ; return res; |
| ; return 0; |
| ; } |
| ; |
| ; CHECK-DAG: DBG_VALUE ${{[a-z]+}}, $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location |
| ; CHECK-DAG: DBG_VALUE ${{[a-z]+}}, $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 32, 32), debug-location |
| |
| ; ModuleID = 'sdagsplit-1.c' |
| target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128" |
| target triple = "i386" |
| |
| ; Function Attrs: nounwind readnone |
| define i64 @foo(i64 %a, i64 %b) local_unnamed_addr #0 !dbg !8 { |
| entry: |
| tail call void @llvm.dbg.value(metadata i64 %a, metadata !13, metadata !16), !dbg !17 |
| tail call void @llvm.dbg.value(metadata i64 %b, metadata !14, metadata !16), !dbg !18 |
| %cmp = icmp eq i64 %a, %b, !dbg !20 |
| %add = add nsw i64 %b, 1, !dbg !22 |
| tail call void @llvm.dbg.value(metadata i64 %add, metadata !15, metadata !16), !dbg !19 |
| %retval.0 = select i1 %cmp, i64 %add, i64 0, !dbg !23 |
| ret i64 %retval.0, !dbg !24 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { nounwind readnone } |
| attributes #1 = { nounwind readnone speculatable } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5, !6} |
| !llvm.ident = !{!7} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "sdagsplit-1.c", directory: "/X86") |
| !2 = !{} |
| !3 = !{i32 1, !"NumRegisterParameters", i32 0} |
| !4 = !{i32 2, !"Dwarf Version", i32 2} |
| !5 = !{i32 2, !"Debug Info Version", i32 3} |
| !6 = !{i32 1, !"wchar_size", i32 4} |
| !7 = !{!"clang version 6.0.0 "} |
| !8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12) |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{!11, !11, !11} |
| !11 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed) |
| !12 = !{!13, !14, !15} |
| !13 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 2, type: !11) |
| !14 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !1, line: 2, type: !11) |
| !15 = !DILocalVariable(name: "res", scope: !8, file: !1, line: 4, type: !11) |
| !16 = !DIExpression() |
| !17 = !DILocation(line: 2, column: 26, scope: !8) |
| !18 = !DILocation(line: 2, column: 39, scope: !8) |
| !19 = !DILocation(line: 4, column: 12, scope: !8) |
| !20 = !DILocation(line: 5, column: 9, scope: !21) |
| !21 = distinct !DILexicalBlock(scope: !8, file: !1, line: 5, column: 7) |
| !22 = !DILocation(line: 4, column: 19, scope: !8) |
| !23 = !DILocation(line: 5, column: 7, scope: !8) |
| !24 = !DILocation(line: 8, column: 1, scope: !8) |