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1; RUN: opt -passes="globalopt" < %s -o /dev/null -debug-pass-manager 2>&1 | FileCheck %s2; RUN: opt -strip-debug -S < %s | opt -passes="globalopt" -o /dev/null -debug-pass-manager 2>&1 | FileCheck %s3 4; Make sure that the call to dbg.declare does not prevent running BlockFrequency5; and (especially) Loop Analysis.6; Later passes (e.g. instcombine) may behave in different ways depending on if7; LoopInfo is available or not. Therefore, letting GlobalOpt run or not run8; LoopAnalysis depending on the presence of a dbg.declare may make the compiler9; generate different code with and without debug info.10 11; CHECK: Running pass: GlobalOptPass on [module]12; CHECK: Running analysis: BlockFrequencyAnalysis on h13; CHECK: Running analysis: LoopAnalysis on h14 15define i16 @h(ptr %k) {16entry:17 call void @llvm.dbg.declare(metadata ptr %k, metadata !1, metadata !DIExpression()), !dbg !2218 %call = call i16 @gaz()19 ret i16 %call20}21 22; Function Attrs: nocallback nofree nosync nounwind readnone speculatable willreturn23declare void @llvm.dbg.declare(metadata, metadata, metadata) #024 25define internal i16 @gaz() {26entry:27 ret i16 028}29 30attributes #0 = { nocallback nofree nosync nounwind readnone speculatable willreturn }31 32!llvm.dbg.cu = !{!17}33!llvm.module.flags = !{!0}34 35!0 = !{i32 2, !"Debug Info Version", i32 3}36!1 = !DILocalVariable(name: "k", arg: 1, scope: !2, file: !3, line: 13, type: !19)37!2 = distinct !DISubprogram(name: "h", scope: !3, file: !3, line: 13, type: !4, scopeLine: 13, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !17, retainedNodes: !21)38!3 = !DIFile(filename: "foo2.c", directory: "/bar")39!4 = !DISubroutineType(types: !5)40!5 = !{!19}41!17 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 16", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, retainedTypes: !18, globals: !20, splitDebugInlining: false, nameTableKind: None)42!18 = !{!19}43!19 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)44!20 = !{}45!21 = !{!1}46!22 = !DILocation(line: 13, column: 27, scope: !2)47