| ; RUN: opt < %s -passes=gvn -S | FileCheck %s |
| ; CHECK: {{^}}for.body: |
| ; CHECK-NEXT: [[VREG1:%[^ ]+]] = phi{{.*}}[[VREG2:%[^ ]+]],{{.*}}%.sink, |
| ; CHECK-NOT: !dbg |
| ; CHECK-SAME: {{$}} |
| ; CHECK: {{^}}for.inc: |
| ; CHECK-NEXT: [[VREG2]] = phi{{.*}}%inc,{{.*}}[[VREG1]] |
| |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @g = external local_unnamed_addr global i32, align 4 |
| |
| ; Function Attrs: nounwind uwtable |
| define void @foo(i32 %x, i32 %y, i32 %z) local_unnamed_addr #0 !dbg !4 { |
| entry: |
| %not.tobool = icmp eq i32 %x, 0, !dbg !8 |
| %.sink = zext i1 %not.tobool to i32, !dbg !8 |
| store i32 %.sink, ptr @g, align 4, !tbaa !9 |
| %cmp8 = icmp sgt i32 %y, 0, !dbg !13 |
| br i1 %cmp8, label %for.body.preheader, label %for.end, !dbg !17 |
| |
| for.body.preheader: ; preds = %entry |
| br label %for.body, !dbg !19 |
| |
| for.body: ; preds = %for.body.preheader, %for.inc |
| %i.09 = phi i32 [ %inc4, %for.inc ], [ 0, %for.body.preheader ] |
| %cmp1 = icmp sgt i32 %i.09, %z, !dbg !19 |
| br i1 %cmp1, label %if.then2, label %for.inc, !dbg !21 |
| |
| if.then2: ; preds = %for.body |
| %0 = load i32, ptr @g, align 4, !dbg !22, !tbaa !9 |
| %inc = add nsw i32 %0, 1, !dbg !22 |
| store i32 %inc, ptr @g, align 4, !dbg !22, !tbaa !9 |
| br label %for.inc, !dbg !23 |
| |
| for.inc: ; preds = %for.body, %if.then2 |
| %inc4 = add nuw nsw i32 %i.09, 1, !dbg !24 |
| %exitcond = icmp ne i32 %inc4, %y, !dbg !13 |
| br i1 %exitcond, label %for.body, label %for.end.loopexit, !dbg !17 |
| |
| for.end.loopexit: ; preds = %for.inc |
| br label %for.end, !dbg !26 |
| |
| for.end: ; preds = %for.end.loopexit, %entry |
| ret void, !dbg !26 |
| } |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1) |
| !1 = !DIFile(filename: "foo.c", directory: "b/") |
| !2 = !{i32 2, !"Dwarf Version", i32 4} |
| !3 = !{i32 2, !"Debug Info Version", i32 3} |
| !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{null, !7, !7, !7} |
| !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !8 = !DILocation(line: 4, column: 7, scope: !4) |
| !9 = !{!10, !10, i64 0} |
| !10 = !{!"int", !11, i64 0} |
| !11 = !{!"omnipotent char", !12, i64 0} |
| !12 = !{!"Simple C/C++ TBAA"} |
| !13 = !DILocation(line: 10, column: 13, scope: !14) |
| !14 = !DILexicalBlockFile(scope: !15, file: !1, discriminator: 1) |
| !15 = distinct !DILexicalBlock(scope: !16, file: !1, line: 10, column: 3) |
| !16 = distinct !DILexicalBlock(scope: !4, file: !1, line: 10, column: 3) |
| !17 = !DILocation(line: 10, column: 3, scope: !18) |
| !18 = !DILexicalBlockFile(scope: !16, file: !1, discriminator: 1) |
| !19 = !DILocation(line: 11, column: 11, scope: !20) |
| !20 = distinct !DILexicalBlock(scope: !15, file: !1, line: 11, column: 9) |
| !21 = !DILocation(line: 11, column: 9, scope: !15) |
| !22 = !DILocation(line: 12, column: 8, scope: !20) |
| !23 = !DILocation(line: 12, column: 7, scope: !20) |
| !24 = !DILocation(line: 10, column: 20, scope: !25) |
| !25 = !DILexicalBlockFile(scope: !15, file: !1, discriminator: 2) |
| !26 = !DILocation(line: 13, column: 1, scope: !4) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!2, !3} |