mirror of
https://github.com/RPCS3/llvm-mirror.git
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5a85d9dae7
Summary: MergedLoadStoreMotion::mergeStores is using some heuristics to limit the amount of stores that it tries to sink (see MagicCompileTimeControl in MergedLoadStoreMotion.cpp). The heuristic involves counting the number of instructions in one of the basic blocks that is part of the transformation. We now ignore dbg intrinsics when counting instruction for the MagicCompileTimeControl heuristic. This to make sure that the amount of stores that are sunk doesn't depend on the amount of debug information (if -g is used or not). Reviewers: Gerolf, davide, majnemer Reviewed By: davide Subscribers: dberlin, bjope, aprantl, JDevlieghere, llvm-commits Differential Revision: https://reviews.llvm.org/D46600 llvm-svn: 331852
157 lines
11 KiB
LLVM
157 lines
11 KiB
LLVM
; RUN: opt < %s -S -mldst-motion -o - | FileCheck %s
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; RUN: opt < %s -S -strip-debug -mldst-motion -o - | FileCheck %s
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; Verify that the amount of stores that are sunk is invariant regarding debug
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; info. This used to fail due to including dbg.value instructions when
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; calculating the size of a basic block for the "MagicCompileTimeControl"
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; check in MergedLoadStoreMotion::mergeStores.
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; CHECK-LABEL: return:
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; CHECK-NEXT: %.sink = phi i16 [ 5, %if.end ], [ 6, %if.then ]
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; CHECK-NEXT: %0 = getelementptr inbounds %struct.S0, %struct.S0* %agg.result, i16 0, i32 0
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; CHECK-NEXT: store i16 %.sink, i16* %0
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; CHECK-NEXT: %1 = getelementptr inbounds %struct.S0, %struct.S0* %agg.result, i16 0, i32 1
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; CHECK-NEXT: store i16 0, i16* %1
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; CHECK-NEXT: ret void
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%struct.S0 = type { i16, i16 }
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@g_173 = dso_local local_unnamed_addr global i16 0, !dbg !0
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; Function Attrs: noinline norecurse nounwind
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define dso_local void @func_34(%struct.S0* noalias sret %agg.result) local_unnamed_addr #0 !dbg !11 {
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entry:
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br i1 undef, label %if.end, label %if.then, !dbg !18
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if.then: ; preds = %entry
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i16 5, metadata !19, metadata !DIExpression()), !dbg !22
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%l_303.sroa.0.0..sroa_idx = getelementptr inbounds %struct.S0, %struct.S0* %agg.result, i16 0, i32 0, !dbg !23
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store i16 6, i16* %l_303.sroa.0.0..sroa_idx, !dbg !23
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%l_303.sroa.2.0..sroa_idx1 = getelementptr inbounds %struct.S0, %struct.S0* %agg.result, i16 0, i32 1, !dbg !23
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store i16 0, i16* %l_303.sroa.2.0..sroa_idx1, !dbg !23
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br label %return, !dbg !24
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if.end: ; preds = %entry
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%f037 = getelementptr inbounds %struct.S0, %struct.S0* %agg.result, i16 0, i32 0, !dbg !25
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store i16 5, i16* %f037, !dbg !25
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%f138 = getelementptr inbounds %struct.S0, %struct.S0* %agg.result, i16 0, i32 1, !dbg !25
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store i16 0, i16* %f138, !dbg !25
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store i16 0, i16* @g_173, !dbg !27
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br label %return, !dbg !28
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return: ; preds = %if.end, %if.then
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ret void, !dbg !29
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { noinline norecurse nounwind }
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attributes #1 = { nounwind readnone speculatable }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!7, !8, !9}
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!llvm.ident = !{!10}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "g_173", scope: !2, file: !3, line: 7, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (x)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "csmith11794002068761.c", directory: "")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{i32 1, !"wchar_size", i32 1}
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!10 = !{!"clang version 7.0.0 (x)"}
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!11 = distinct !DISubprogram(name: "func_34", scope: !3, file: !3, line: 16, type: !12, isLocal: false, isDefinition: true, scopeLine: 16, isOptimized: false, unit: !2, retainedNodes: !4)
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!12 = !DISubroutineType(types: !13)
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!13 = !{!14}
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!14 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S0", file: !3, line: 2, size: 32, elements: !15)
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!15 = !{!16, !17}
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!16 = !DIDerivedType(tag: DW_TAG_member, name: "f0", scope: !14, file: !3, line: 3, baseType: !6, size: 16)
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!17 = !DIDerivedType(tag: DW_TAG_member, name: "f1", scope: !14, file: !3, line: 4, baseType: !6, size: 16, offset: 16)
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!18 = !DILocation(line: 18, column: 7, scope: !11)
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!19 = !DILocalVariable(name: "left", scope: !20, file: !3, line: 23, type: !6)
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!20 = distinct !DILexicalBlock(scope: !21, file: !3, line: 18, column: 14)
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!21 = distinct !DILexicalBlock(scope: !11, file: !3, line: 18, column: 7)
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!22 = !DILocation(line: 23, column: 9, scope: !20)
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!23 = !DILocation(line: 26, column: 12, scope: !20)
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!24 = !DILocation(line: 26, column: 5, scope: !20)
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!25 = !DILocation(line: 29, column: 23, scope: !26)
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!26 = distinct !DILexicalBlock(scope: !11, file: !3, line: 28, column: 3)
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!27 = !DILocation(line: 30, column: 11, scope: !26)
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!28 = !DILocation(line: 31, column: 5, scope: !26)
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!29 = !DILocation(line: 33, column: 1, scope: !11)
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