1; RUN: llc < %s -verify-machineinstrs 2; PR16110 3; 4; This test case contains a value that is split into two connected components 5; by rematerialization during coalescing. It also contains a DBG_VALUE 6; instruction which must be updated during 7; ConnectedVNInfoEqClasses::Distribute(). 8 9source_filename = "test/CodeGen/ARM/coalesce-dbgvalue.ll" 10target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32" 11target triple = "thumbv7-apple-ios3.0.0" 12 13@c = common global i32 0, align 4, !dbg !0 14@b = common global i32 0, align 4, !dbg !4 15@a = common global i64 0, align 8, !dbg !6 16@d = common global i32 0, align 4, !dbg !9 17 18; Function Attrs: nounwind ssp 19define i32 @pr16110() #0 !dbg !15 { 20for.cond1.preheader: 21 store i32 0, i32* @c, align 4, !dbg !24 22 br label %for.cond1.outer, !dbg !26 23 24for.cond1: ; preds = %for.end9, %for.cond1.outer 25 %storemerge11 = phi i32 [ 0, %for.end9 ], [ %storemerge11.ph, %for.cond1.outer ] 26 %cmp = icmp slt i32 %storemerge11, 1, !dbg !26 27 br i1 %cmp, label %for.body2, label %for.end9, !dbg !26 28 29for.body2: ; preds = %for.cond1 30 store i32 %storemerge11, i32* @b, align 4, !dbg !26 31 tail call void @llvm.dbg.value(metadata i32* null, metadata !20, metadata !27), !dbg !28 32 %0 = load i64, i64* @a, align 8, !dbg !29 33 %xor = xor i64 %0, %e.1.ph, !dbg !29 34 %conv3 = trunc i64 %xor to i32, !dbg !29 35 tail call void @llvm.dbg.value(metadata i32 %conv3, metadata !19, metadata !27), !dbg !29 36 %tobool4 = icmp eq i32 %conv3, 0, !dbg !29 37 br i1 %tobool4, label %land.end, label %land.rhs, !dbg !29 38 39land.rhs: ; preds = %for.body2 40 %call = tail call i32 bitcast (i32 (...)* @fn3 to i32 ()*)() #3, !dbg !29 41 %tobool5 = icmp ne i32 %call, 0, !dbg !29 42 br label %land.end 43 44land.end: ; preds = %land.rhs, %for.body2 45 %1 = phi i1 [ false, %for.body2 ], [ %tobool5, %land.rhs ] 46 %land.ext = zext i1 %1 to i32 47 %call6 = tail call i32 bitcast (i32 (...)* @fn2 to i32 (i32, i32*)*)(i32 %land.ext, i32* null) #3 48 %2 = load i32, i32* @b, align 4, !dbg !26 49 %inc8 = add nsw i32 %2, 1, !dbg !26 50 %phitmp = and i64 %xor, 4294967295, !dbg !26 51 br label %for.cond1.outer, !dbg !26 52 53for.cond1.outer: ; preds = %land.end, %for.cond1.preheader 54 %storemerge11.ph = phi i32 [ %inc8, %land.end ], [ 0, %for.cond1.preheader ] 55 %e.1.ph = phi i64 [ %phitmp, %land.end ], [ 0, %for.cond1.preheader ] 56 %3 = load i32, i32* @d, align 4, !dbg !30 57 %tobool10 = icmp eq i32 %3, 0, !dbg !30 58 br label %for.cond1 59 60for.end9: ; preds = %for.cond1 61 br i1 %tobool10, label %if.end, label %for.cond1, !dbg !30 62 63if.end: ; preds = %for.end9 64 store i32 %storemerge11, i32* @b, align 4, !dbg !26 65 ret i32 0, !dbg !31 66} 67 68declare i32 @fn2(...) #1 69 70declare i32 @fn3(...) #1 71 72; Function Attrs: nounwind readnone 73declare void @llvm.dbg.value(metadata, metadata, metadata) #2 74 75attributes #0 = { nounwind ssp "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" } 76attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" } 77attributes #2 = { nounwind readnone } 78attributes #3 = { nounwind } 79 80!llvm.dbg.cu = !{!11} 81!llvm.module.flags = !{!14} 82 83!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 84!1 = !DIGlobalVariable(name: "c", scope: null, file: !2, line: 3, type: !3, isLocal: false, isDefinition: true) 85!2 = !DIFile(filename: "pr16110.c", directory: "/d/b") 86!3 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 87!4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression()) 88!5 = !DIGlobalVariable(name: "b", scope: null, file: !2, line: 2, type: !3, isLocal: false, isDefinition: true) 89!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression()) 90!7 = !DIGlobalVariable(name: "a", scope: null, file: !2, line: 1, type: !8, isLocal: false, isDefinition: true) 91!8 = !DIBasicType(name: "long long int", size: 64, align: 32, encoding: DW_ATE_signed) 92!9 = !DIGlobalVariableExpression(var: !10, expr: !DIExpression()) 93!10 = !DIGlobalVariable(name: "d", scope: null, file: !2, line: 4, type: !3, isLocal: false, isDefinition: true) 94!11 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang version 3.4 (trunk 182024) (llvm/trunk 182023)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !12, retainedTypes: !12, globals: !13, imports: !12) 95!12 = !{} 96!13 = !{!6, !4, !0, !9} 97!14 = !{i32 1, !"Debug Info Version", i32 3} 98!15 = distinct !DISubprogram(name: "pr16110", scope: !2, file: !2, line: 7, type: !16, isLocal: false, isDefinition: true, scopeLine: 7, virtualIndex: 6, isOptimized: true, unit: !11, retainedNodes: !18) 99!16 = !DISubroutineType(types: !17) 100!17 = !{!3} 101!18 = !{!19, !20} 102!19 = !DILocalVariable(name: "e", scope: !15, file: !2, line: 8, type: !3) 103!20 = !DILocalVariable(name: "f", scope: !21, file: !2, line: 13, type: !23) 104!21 = distinct !DILexicalBlock(scope: !22, file: !2, line: 12) 105!22 = distinct !DILexicalBlock(scope: !15, file: !2, line: 12) 106!23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !3, size: 32, align: 32) 107!24 = !DILocation(line: 10, scope: !25) 108!25 = distinct !DILexicalBlock(scope: !15, file: !2, line: 10) 109!26 = !DILocation(line: 12, scope: !22) 110!27 = !DIExpression() 111!28 = !DILocation(line: 13, scope: !21) 112!29 = !DILocation(line: 14, scope: !21) 113!30 = !DILocation(line: 16, scope: !15) 114!31 = !DILocation(line: 18, scope: !15) 115 116