| ; FIXME: Fix machine verifier issues and remove -verify-machineinstrs=0. PR39452. |
| ; RUN: llc -stop-before=finalize-isel -pre-RA-sched=linearize -verify-machineinstrs=0 < %s -experimental-debug-variable-locations=false | FileCheck %s |
| source_filename = "linear-dbg-value.ll" |
| |
| ; Function Attrs: nounwind readonly uwtable |
| define i32 @foo(i32* nocapture readonly %a, i32 %N) local_unnamed_addr #0 !dbg !6 { |
| entry: |
| %cmp6 = icmp sgt i32 %N, 0, !dbg !11 |
| br i1 %cmp6, label %for.body.preheader, label %for.cond.cleanup, !dbg !15 |
| |
| for.body.preheader: ; preds = %entry |
| %wide.trip.count = zext i32 %N to i64 |
| br label %for.body, !dbg !17 |
| |
| for.cond.cleanup.loopexit: ; preds = %for.body |
| br label %for.cond.cleanup, !dbg !19 |
| |
| for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry |
| %x.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.cond.cleanup.loopexit ] |
| ret i32 %x.0.lcssa, !dbg !19 |
| |
| for.body: ; preds = %for.body, %for.body.preheader |
| ; CHECK: ![[X:[0-9]+]] = !DILocalVariable(name: "x", |
| ; CHECK-LABEL: bb.3.for.body: |
| ; CHECK: DBG_VALUE {{.*}} ![[X]], !DIExpression() |
| ; CHECK: DBG_VALUE {{.*}} ![[X]], !DIExpression() |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ] |
| %x.07 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv, !dbg !17 |
| %0 = load i32, i32* %arrayidx, align 4, !dbg !17 |
| %add = add nsw i32 %0, %x.07, !dbg !17 |
| call void @llvm.dbg.value(metadata i32 %add, metadata !9, metadata !DIExpression()), !dbg !20 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !21 |
| call void @llvm.dbg.value(metadata i32 %add, metadata !9, metadata !DIExpression()), !dbg !20 |
| %exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count, !dbg !11 |
| br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body, !dbg !15 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { nounwind readonly uwtable } |
| attributes #1 = { nounwind readnone speculatable } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4} |
| !llvm.ident = !{!5} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.1 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "foo.c", directory: "/tmp") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{!"clang version 4.0.1 "} |
| !6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !8) |
| !7 = !DISubroutineType(types: !2) |
| !8 = !{!9} |
| !9 = !DILocalVariable(name: "x", scope: !6, file: !1, line: 3, type: !10) |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !DILocation(line: 4, scope: !12) |
| !12 = !DILexicalBlockFile(scope: !13, file: !1, discriminator: 1) |
| !13 = distinct !DILexicalBlock(scope: !14, file: !1, line: 4, column: 3) |
| !14 = distinct !DILexicalBlock(scope: !6, file: !1, line: 4, column: 3) |
| !15 = !DILocation(line: 4, scope: !16) |
| !16 = !DILexicalBlockFile(scope: !14, file: !1, discriminator: 1) |
| !17 = !DILocation(line: 5, scope: !18) |
| !18 = distinct !DILexicalBlock(scope: !13, file: !1, line: 4, column: 31) |
| !19 = !DILocation(line: 7, scope: !6) |
| !20 = !DILocation(line: 3, scope: !6) |
| !21 = !DILocation(line: 4, scope: !22) |
| !22 = !DILexicalBlockFile(scope: !13, file: !1, discriminator: 3) |