131 lines
5.8 KiB
LLVM
131 lines
5.8 KiB
LLVM
; RUN: opt -S -loop-fusion -pass-remarks-analysis=loop-fusion -disable-output < %s 2>&1 | FileCheck %s
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@B = common global [1024 x i32] zeroinitializer, align 16
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; CHECK: remark: diagnostics_analysis.c:6:3: [test]: Loop is not a candidate for fusion: Loop contains a volatile access
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; CHECK: remark: diagnostics_analysis.c:10:3: [test]: Loop is not a candidate for fusion: Loop has unknown trip count
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define void @test(i32* %A, i32 %n) !dbg !15 {
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entry:
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%A.addr = alloca i32*, align 8
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%n.addr = alloca i32, align 4
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%i = alloca i32, align 4
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%i1 = alloca i32, align 4
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store i32* %A, i32** %A.addr, align 8
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store i32 %n, i32* %n.addr, align 4
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%0 = bitcast i32* %i to i8*
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store i32 0, i32* %i, align 4
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%1 = load i32, i32* %i, align 4
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%2 = load i32, i32* %n.addr, align 4
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%cmp = icmp slt i32 %1, %2
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br i1 %cmp, label %for.body, label %for.cond.cleanup
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for.cond.cleanup: ; preds = %for.cond
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%3 = bitcast i32* %i to i8*, !dbg !42
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br label %for.end
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for.body: ; preds = %for.cond
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%4 = load i32, i32* %i, align 4
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%sub = sub nsw i32 %4, 3
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%5 = load i32, i32* %i, align 4
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%add = add nsw i32 %5, 3
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%mul = mul nsw i32 %sub, %add
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%6 = load i32, i32* %i, align 4
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%rem = srem i32 %mul, %6
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%7 = load i32*, i32** %A.addr, align 8
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%8 = load i32, i32* %i, align 4
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%idxprom = sext i32 %8 to i64
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%arrayidx = getelementptr inbounds i32, i32* %7, i64 %idxprom
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store volatile i32 %rem, i32* %arrayidx, align 4
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br label %for.inc
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for.inc: ; preds = %for.body
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%9 = load i32, i32* %i, align 4, !dbg !49
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%inc = add nsw i32 %9, 1, !dbg !49
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store i32 %inc, i32* %i, align 4, !dbg !49
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br label %for.cond, !dbg !42, !llvm.loop !50
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for.end: ; preds = %for.cond.cleanup
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%10 = bitcast i32* %i1 to i8*
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store i32 0, i32* %i1, align 4
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br label %for.cond2
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for.cond2: ; preds = %for.inc12, %for.end
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%11 = load i32, i32* %i1, align 4
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%12 = load i32, i32* %n.addr, align 4
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%cmp3 = icmp slt i32 %11, %12
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br i1 %cmp3, label %for.body5, label %for.cond.cleanup4
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for.cond.cleanup4: ; preds = %for.cond2
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%13 = bitcast i32* %i1 to i8*
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br label %for.end14
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for.body5: ; preds = %for.cond2
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%14 = load i32, i32* %i1, align 4
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%sub6 = sub nsw i32 %14, 3
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%15 = load i32, i32* %i1, align 4
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%add7 = add nsw i32 %15, 3
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%mul8 = mul nsw i32 %sub6, %add7
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%16 = load i32, i32* %i1, align 4
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%rem9 = srem i32 %mul8, %16
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%17 = load i32, i32* %i1, align 4
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%idxprom10 = sext i32 %17 to i64
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%arrayidx11 = getelementptr inbounds [1024 x i32], [1024 x i32]* @B, i64 0, i64 %idxprom10
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store i32 %rem9, i32* %arrayidx11, align 4
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br label %for.inc12
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for.inc12: ; preds = %for.body5
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%18 = load i32, i32* %i1, align 4
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%inc13 = add nsw i32 %18, 1
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store i32 %inc13, i32* %i1, align 4
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br label %for.cond2, !dbg !59, !llvm.loop !67
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for.end14: ; preds = %for.cond.cleanup4
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ret void
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}
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!llvm.module.flags = !{!10, !11, !13}
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!llvm.ident = !{!14}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "B", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 9.0.0 (git@github.ibm.com:compiler/llvm-project.git c019c32c5a2b0ed4487a738337d35fd3f630ac0a)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: GNU)
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!3 = !DIFile(filename: "diagnostics_analysis.c", directory: "/tmp")
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!4 = !{}
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!5 = !{!0}
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!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 32768, elements: !8)
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!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!8 = !{!9}
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!9 = !DISubrange(count: 1024)
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!10 = !{i32 2, !"Dwarf Version", i32 4}
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!11 = !{i32 2, !"Debug Info Version", i32 3}
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!13 = !{i32 7, !"PIC Level", i32 2}
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!14 = !{!"clang version 9.0.0 (git@github.ibm.com:compiler/llvm-project.git c019c32c5a2b0ed4487a738337d35fd3f630ac0a)"}
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!15 = distinct !DISubprogram(name: "test", scope: !3, file: !3, line: 5, type: !16, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !20)
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!16 = !DISubroutineType(types: !17)
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!17 = !{null, !18, !7}
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!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64)
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!19 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
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!20 = !{!21, !22, !23, !25}
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!21 = !DILocalVariable(name: "A", arg: 1, scope: !15, file: !3, line: 5, type: !18)
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!22 = !DILocalVariable(name: "n", arg: 2, scope: !15, file: !3, line: 5, type: !7)
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!23 = !DILocalVariable(name: "i", scope: !24, file: !3, line: 6, type: !7)
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!24 = distinct !DILexicalBlock(scope: !15, file: !3, line: 6, column: 3)
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!25 = !DILocalVariable(name: "i", scope: !26, file: !3, line: 10, type: !7)
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!26 = distinct !DILexicalBlock(scope: !15, file: !3, line: 10, column: 3)
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!38 = distinct !DILexicalBlock(scope: !24, file: !3, line: 6, column: 3)
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!41 = !DILocation(line: 6, column: 3, scope: !24)
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!42 = !DILocation(line: 6, column: 3, scope: !38)
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!44 = distinct !DILexicalBlock(scope: !38, file: !3, line: 6, column: 31)
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!49 = !DILocation(line: 6, column: 27, scope: !38)
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!50 = distinct !{!50, !41, !51}
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!51 = !DILocation(line: 8, column: 3, scope: !24)
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!55 = distinct !DILexicalBlock(scope: !26, file: !3, line: 10, column: 3)
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!58 = !DILocation(line: 10, column: 3, scope: !26)
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!59 = !DILocation(line: 10, column: 3, scope: !55)
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!67 = distinct !{!67, !58, !68}
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!68 = !DILocation(line: 12, column: 3, scope: !26)
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!69 = !DILocation(line: 13, column: 1, scope: !15)
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