diff options
Diffstat (limited to 'llvm/test/Transforms/LoopFusion/diagnostics_analysis.ll')
| -rw-r--r-- | llvm/test/Transforms/LoopFusion/diagnostics_analysis.ll | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopFusion/diagnostics_analysis.ll b/llvm/test/Transforms/LoopFusion/diagnostics_analysis.ll new file mode 100644 index 00000000000..901fa0d8e8e --- /dev/null +++ b/llvm/test/Transforms/LoopFusion/diagnostics_analysis.ll @@ -0,0 +1,130 @@ +; RUN: opt -S -loop-fusion -pass-remarks-analysis=loop-fusion -disable-output < %s 2>&1 | FileCheck %s + +@B = common global [1024 x i32] zeroinitializer, align 16 + +; CHECK: remark: diagnostics_analysis.c:6:3: [test]: Loop is not a candidate for fusion: Loop contains a volatile access +; CHECK: remark: diagnostics_analysis.c:10:3: [test]: Loop is not a candidate for fusion: Loop has unknown trip count +define void @test(i32* %A, i32 %n) !dbg !15 { +entry: + %A.addr = alloca i32*, align 8 + %n.addr = alloca i32, align 4 + %i = alloca i32, align 4 + %i1 = alloca i32, align 4 + store i32* %A, i32** %A.addr, align 8 + store i32 %n, i32* %n.addr, align 4 + %0 = bitcast i32* %i to i8* + store i32 0, i32* %i, align 4 + br label %for.cond + +for.cond: ; preds = %for.inc, %entry + %1 = load i32, i32* %i, align 4 + %2 = load i32, i32* %n.addr, align 4 + %cmp = icmp slt i32 %1, %2 + br i1 %cmp, label %for.body, label %for.cond.cleanup + +for.cond.cleanup: ; preds = %for.cond + %3 = bitcast i32* %i to i8*, !dbg !42 + br label %for.end + +for.body: ; preds = %for.cond + %4 = load i32, i32* %i, align 4 + %sub = sub nsw i32 %4, 3 + %5 = load i32, i32* %i, align 4 + %add = add nsw i32 %5, 3 + %mul = mul nsw i32 %sub, %add + %6 = load i32, i32* %i, align 4 + %rem = srem i32 %mul, %6 + %7 = load i32*, i32** %A.addr, align 8 + %8 = load i32, i32* %i, align 4 + %idxprom = sext i32 %8 to i64 + %arrayidx = getelementptr inbounds i32, i32* %7, i64 %idxprom + store volatile i32 %rem, i32* %arrayidx, align 4 + br label %for.inc + +for.inc: ; preds = %for.body + %9 = load i32, i32* %i, align 4, !dbg !49 + %inc = add nsw i32 %9, 1, !dbg !49 + store i32 %inc, i32* %i, align 4, !dbg !49 + br label %for.cond, !dbg !42, !llvm.loop !50 + +for.end: ; preds = %for.cond.cleanup + %10 = bitcast i32* %i1 to i8* + store i32 0, i32* %i1, align 4 + br label %for.cond2 + +for.cond2: ; preds = %for.inc12, %for.end + %11 = load i32, i32* %i1, align 4 + %12 = load i32, i32* %n.addr, align 4 + %cmp3 = icmp slt i32 %11, %12 + br i1 %cmp3, label %for.body5, label %for.cond.cleanup4 + +for.cond.cleanup4: ; preds = %for.cond2 + %13 = bitcast i32* %i1 to i8* + br label %for.end14 + +for.body5: ; preds = %for.cond2 + %14 = load i32, i32* %i1, align 4 + %sub6 = sub nsw i32 %14, 3 + %15 = load i32, i32* %i1, align 4 + %add7 = add nsw i32 %15, 3 + %mul8 = mul nsw i32 %sub6, %add7 + %16 = load i32, i32* %i1, align 4 + %rem9 = srem i32 %mul8, %16 + %17 = load i32, i32* %i1, align 4 + %idxprom10 = sext i32 %17 to i64 + %arrayidx11 = getelementptr inbounds [1024 x i32], [1024 x i32]* @B, i64 0, i64 %idxprom10 + store i32 %rem9, i32* %arrayidx11, align 4 + br label %for.inc12 + +for.inc12: ; preds = %for.body5 + %18 = load i32, i32* %i1, align 4 + %inc13 = add nsw i32 %18, 1 + store i32 %inc13, i32* %i1, align 4 + br label %for.cond2, !dbg !59, !llvm.loop !67 + +for.end14: ; preds = %for.cond.cleanup4 + ret void +} + +!llvm.module.flags = !{!10, !11, !13} +!llvm.ident = !{!14} + +!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) +!1 = distinct !DIGlobalVariable(name: "B", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true) +!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) +!3 = !DIFile(filename: "diagnostics_analysis.c", directory: "/tmp") +!4 = !{} +!5 = !{!0} +!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 32768, elements: !8) +!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!8 = !{!9} +!9 = !DISubrange(count: 1024) +!10 = !{i32 2, !"Dwarf Version", i32 4} +!11 = !{i32 2, !"Debug Info Version", i32 3} +!13 = !{i32 7, !"PIC Level", i32 2} +!14 = !{!"clang version 9.0.0 (git@github.ibm.com:compiler/llvm-project.git c019c32c5a2b0ed4487a738337d35fd3f630ac0a)"} +!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) +!16 = !DISubroutineType(types: !17) +!17 = !{null, !18, !7} +!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64) +!19 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7) +!20 = !{!21, !22, !23, !25} +!21 = !DILocalVariable(name: "A", arg: 1, scope: !15, file: !3, line: 5, type: !18) +!22 = !DILocalVariable(name: "n", arg: 2, scope: !15, file: !3, line: 5, type: !7) +!23 = !DILocalVariable(name: "i", scope: !24, file: !3, line: 6, type: !7) +!24 = distinct !DILexicalBlock(scope: !15, file: !3, line: 6, column: 3) +!25 = !DILocalVariable(name: "i", scope: !26, file: !3, line: 10, type: !7) +!26 = distinct !DILexicalBlock(scope: !15, file: !3, line: 10, column: 3) +!38 = distinct !DILexicalBlock(scope: !24, file: !3, line: 6, column: 3) +!41 = !DILocation(line: 6, column: 3, scope: !24) +!42 = !DILocation(line: 6, column: 3, scope: !38) +!44 = distinct !DILexicalBlock(scope: !38, file: !3, line: 6, column: 31) +!49 = !DILocation(line: 6, column: 27, scope: !38) +!50 = distinct !{!50, !41, !51} +!51 = !DILocation(line: 8, column: 3, scope: !24) +!55 = distinct !DILexicalBlock(scope: !26, file: !3, line: 10, column: 3) +!58 = !DILocation(line: 10, column: 3, scope: !26) +!59 = !DILocation(line: 10, column: 3, scope: !55) +!67 = distinct !{!67, !58, !68} +!68 = !DILocation(line: 12, column: 3, scope: !26) +!69 = !DILocation(line: 13, column: 1, scope: !15) |
