| ; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s |
| ; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s |
| |
| ; Make sure poison value tracking works in the presence of @llvm.dbg |
| ; intrinsics. Unfortunately, I was not able to reduce this file |
| ; further while still keeping the debug info well formed. |
| |
| define void @foo(i32 %n, i32* %arr) !dbg !7 { |
| ; CHECK-LABEL: Classifying expressions for: @foo |
| entry: |
| %cmp1 = icmp slt i32 0, %n, !dbg !12 |
| br i1 %cmp1, label %for.body.lr.ph, label %for.end, !dbg !15 |
| |
| for.body.lr.ph: ; preds = %entry |
| br label %for.body, !dbg !15 |
| |
| for.body: ; preds = %for.inc, %for.body.lr.ph |
| %i.02 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.inc ] |
| %add = add nsw i32 %i.02, 50, !dbg !16 |
| call void @llvm.dbg.value(metadata i32 %add, i64 0, metadata !18, metadata !19), !dbg !20 |
| %idxprom = sext i32 %add to i64, !dbg !21 |
| |
| ; CHECK: %idxprom = sext i32 %add to i64 |
| ; CHECK-NEXT: --> {50,+,1}<nuw><nsw><%for.body> |
| |
| %arrayidx = getelementptr inbounds i32, i32* %arr, i64 %idxprom, !dbg !21 |
| store i32 100, i32* %arrayidx, align 4, !dbg !22 |
| br label %for.inc, !dbg !23 |
| |
| for.inc: ; preds = %for.body |
| %inc = add nsw i32 %i.02, 1, !dbg !24 |
| %cmp = icmp slt i32 %inc, %n, !dbg !12 |
| br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge, !dbg !15, !llvm.loop !25 |
| |
| for.cond.for.end_crit_edge: ; preds = %for.inc |
| br label %for.end, !dbg !15 |
| |
| for.end: ; preds = %for.cond.for.end_crit_edge, %entry |
| ret void, !dbg !27 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, i64, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (llvm/trunk 271857)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "x.c", directory: "/Users/sanjoy/Code/clang/build/debug+asserts-x86") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 2} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"PIC Level", i32 2} |
| !6 = !{!"clang version 3.9.0 (llvm/trunk 271857)"} |
| !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{null, !10, !11} |
| !10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64) |
| !12 = !DILocation(line: 2, column: 24, scope: !13) |
| !13 = distinct !DILexicalBlock(scope: !14, file: !1, line: 2, column: 6) |
| !14 = distinct !DILexicalBlock(scope: !7, file: !1, line: 2, column: 6) |
| !15 = !DILocation(line: 2, column: 6, scope: !14) |
| !16 = !DILocation(line: 3, column: 14, scope: !17) |
| !17 = distinct !DILexicalBlock(scope: !13, file: !1, line: 2, column: 34) |
| !18 = !DILocalVariable(name: "k", scope: !17, file: !1, line: 3, type: !10) |
| !19 = !DIExpression() |
| !20 = !DILocation(line: 3, column: 8, scope: !17) |
| !21 = !DILocation(line: 4, column: 4, scope: !17) |
| !22 = !DILocation(line: 4, column: 11, scope: !17) |
| !23 = !DILocation(line: 5, column: 6, scope: !17) |
| !24 = !DILocation(line: 2, column: 30, scope: !13) |
| !25 = distinct !{!25, !26} |
| !26 = !DILocation(line: 2, column: 6, scope: !7) |
| !27 = !DILocation(line: 6, column: 1, scope: !7) |