180 lines
9.5 KiB
LLVM
180 lines
9.5 KiB
LLVM
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; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/entry_counts_cold.prof -S -profile-sample-accurate | FileCheck %s
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; ModuleID = 'temp.bc'
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; This is a test similar to entry_counts_cold.ll. The key differences are:
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; - we want profile-sample-accurate. Normally, that would trigger resetting function entry counts to 0, and then update
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; them based on the sample profile (SampleProfile::runOnFunction).
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; - we don't have debug info for the function. This means we can't match sample counts in the profile to locations in this function.
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; When we attempt to update its profile info (at the end of SampleProfile::runOnModule - llvm::updateProfileCallee), we'll call
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; updateProfWeight with a 0 priorEntryCount, which will result in a division by 0.
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;
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; We're using @bar and the call to @baz.
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;
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; Currently, the test just ensures opt doesn't ICE
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source_filename = "temp.c"
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.14.0"
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; Function Attrs: nounwind ssp uwtable
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; CHECK: define i32 @top({{.*}} !prof [[TOP:![0-9]+]]
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define i32 @top(i32* %p) #0 !dbg !8 {
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entry:
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%p.addr = alloca i32*, align 8
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store i32* %p, i32** %p.addr, align 8, !tbaa !15
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call void @llvm.dbg.declare(metadata i32** %p.addr, metadata !14, metadata !DIExpression()), !dbg !19
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%0 = load i32*, i32** %p.addr, align 8, !dbg !20, !tbaa !15
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%call = call i32 @foo(i32* %0), !dbg !21
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; foo is inlined
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; CHECK-NOT: call i32 @foo
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; CHECK: call i32 @bar
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%1 = load i32*, i32** %p.addr, align 8, !dbg !22, !tbaa !15
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%2 = load i32, i32* %1, align 4, !dbg !24, !tbaa !25
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%tobool = icmp ne i32 %2, 0, !dbg !24
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br i1 %tobool, label %if.then, label %if.end, !dbg !27
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if.then: ; preds = %entry
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%3 = load i32*, i32** %p.addr, align 8, !dbg !28, !tbaa !15
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; bar is not inlined
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; CHECK: call i32 @bar
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%call1 = call i32 @bar(i32* %3), !dbg !29
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br label %if.end, !dbg !29
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if.end: ; preds = %if.then, %entry
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ret i32 0, !dbg !30
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: nounwind ssp uwtable
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; CHECK: define i32 @foo({{.*}} !prof [[FOO:![0-9]+]]
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define i32 @foo(i32* %p) #0 !dbg !31 {
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entry:
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%p.addr = alloca i32*, align 8
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%a = alloca i32, align 4
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store i32* %p, i32** %p.addr, align 8, !tbaa !15
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call void @llvm.dbg.declare(metadata i32** %p.addr, metadata !33, metadata !DIExpression()), !dbg !35
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%0 = bitcast i32* %a to i8*, !dbg !36
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #4, !dbg !36
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call void @llvm.dbg.declare(metadata i32* %a, metadata !34, metadata !DIExpression()), !dbg !37
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%1 = load i32*, i32** %p.addr, align 8, !dbg !38, !tbaa !15
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%arrayidx = getelementptr inbounds i32, i32* %1, i64 3, !dbg !38
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%2 = load i32, i32* %arrayidx, align 4, !dbg !38, !tbaa !25
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%3 = load i32*, i32** %p.addr, align 8, !dbg !39, !tbaa !15
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%arrayidx1 = getelementptr inbounds i32, i32* %3, i64 2, !dbg !39
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%4 = load i32, i32* %arrayidx1, align 4, !dbg !40, !tbaa !25
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%add = add nsw i32 %4, %2, !dbg !40
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store i32 %add, i32* %arrayidx1, align 4, !dbg !40, !tbaa !25
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%5 = load i32*, i32** %p.addr, align 8, !dbg !41, !tbaa !15
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%call = call i32 @bar(i32* %5), !dbg !42
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store i32 %call, i32* %a, align 4, !dbg !43, !tbaa !25
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%6 = load i32, i32* %a, align 4, !dbg !44, !tbaa !25
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%add2 = add nsw i32 %6, 1, !dbg !45
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%7 = bitcast i32* %a to i8*, !dbg !46
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %7) #4, !dbg !46
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ret i32 %add2, !dbg !47
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}
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; Function Attrs: nounwind ssp uwtable
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; CHECK: define i32 @bar(i32* %p) #0 !prof [[BAR:![0-9]+]] {
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define i32 @bar(i32* %p) #0 {
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entry:
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%p.addr = alloca i32*, align 8
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store i32* %p, i32** %p.addr, align 8, !tbaa !15
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call void @llvm.dbg.declare(metadata i32** %p.addr, metadata !50, metadata !DIExpression()), !dbg !51
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; CHECK: call void (...) @baz(), !dbg !{{[0-9]+}}
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call void (...) @baz(), !dbg !52, !prof !100
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%0 = load i32*, i32** %p.addr, align 8, !dbg !53, !tbaa !15
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%arrayidx = getelementptr inbounds i32, i32* %0, i64 2, !dbg !53
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%1 = load i32, i32* %arrayidx, align 4, !dbg !53, !tbaa !25
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%2 = load i32*, i32** %p.addr, align 8, !dbg !54, !tbaa !15
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%arrayidx1 = getelementptr inbounds i32, i32* %2, i64 1, !dbg !54
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%3 = load i32, i32* %arrayidx1, align 4, !dbg !55, !tbaa !25
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%add = add nsw i32 %3, %1, !dbg !55
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store i32 %add, i32* %arrayidx1, align 4, !dbg !55, !tbaa !25
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%4 = load i32*, i32** %p.addr, align 8, !dbg !56, !tbaa !15
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%arrayidx2 = getelementptr inbounds i32, i32* %4, i64 3, !dbg !56
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%5 = load i32, i32* %arrayidx2, align 4, !dbg !56, !tbaa !25
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ret i32 %5, !dbg !57
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}
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #2
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #2
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declare void @baz(...) #3
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attributes #0 = { nounwind ssp uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sahf,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" "use-sample-profile" }
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attributes #1 = { nounwind readnone speculatable }
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attributes #2 = { argmemonly nounwind }
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attributes #3 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sahf,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #4 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!llvm.ident = !{!7}
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; CHECK: [[TOP]] = !{!"function_entry_count", i64 101}
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; CHECK: [[FOO]] = !{!"function_entry_count", i64 151}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: GNU)
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!1 = !DIFile(filename: "temp.c", directory: "llvm/test/Transforms/SampleProfile")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{i32 7, !"PIC Level", i32 2}
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!7 = !{!"clang version 8.0.0"}
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!8 = distinct !DISubprogram(name: "top", scope: !1, file: !1, line: 5, type: !9, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13)
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!9 = !DISubroutineType(types: !10)
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!10 = !{!11, !12}
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!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
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!13 = !{!14}
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!14 = !DILocalVariable(name: "p", arg: 1, scope: !8, file: !1, line: 5, type: !12)
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!15 = !{!16, !16, i64 0}
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!16 = !{!"any pointer", !17, i64 0}
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!17 = !{!"omnipotent char", !18, i64 0}
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!18 = !{!"Simple C/C++ TBAA"}
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!19 = !DILocation(line: 5, column: 14, scope: !8)
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!20 = !DILocation(line: 6, column: 7, scope: !8)
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!21 = !DILocation(line: 6, column: 3, scope: !8)
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!22 = !DILocation(line: 7, column: 8, scope: !23)
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!23 = distinct !DILexicalBlock(scope: !8, file: !1, line: 7, column: 7)
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!24 = !DILocation(line: 7, column: 7, scope: !23)
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!25 = !{!26, !26, i64 0}
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!26 = !{!"int", !17, i64 0}
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!27 = !DILocation(line: 7, column: 7, scope: !8)
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!28 = !DILocation(line: 8, column: 9, scope: !23)
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!29 = !DILocation(line: 8, column: 5, scope: !23)
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!30 = !DILocation(line: 9, column: 3, scope: !8)
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!31 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 12, type: !9, scopeLine: 12, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !32)
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!32 = !{!33, !34}
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!33 = !DILocalVariable(name: "p", arg: 1, scope: !31, file: !1, line: 12, type: !12)
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!34 = !DILocalVariable(name: "a", scope: !31, file: !1, line: 13, type: !11)
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!35 = !DILocation(line: 12, column: 14, scope: !31)
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!36 = !DILocation(line: 13, column: 3, scope: !31)
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!37 = !DILocation(line: 13, column: 7, scope: !31)
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!38 = !DILocation(line: 14, column: 11, scope: !31)
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!39 = !DILocation(line: 14, column: 3, scope: !31)
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!40 = !DILocation(line: 14, column: 8, scope: !31)
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!41 = !DILocation(line: 15, column: 11, scope: !31)
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!42 = !DILocation(line: 15, column: 7, scope: !31)
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!43 = !DILocation(line: 15, column: 5, scope: !31)
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!44 = !DILocation(line: 16, column: 10, scope: !31)
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!45 = !DILocation(line: 16, column: 11, scope: !31)
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!46 = !DILocation(line: 17, column: 1, scope: !31)
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!47 = !DILocation(line: 16, column: 3, scope: !31)
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!48 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 19, type: !9, scopeLine: 19, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !49)
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!49 = !{!50}
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!50 = !DILocalVariable(name: "p", arg: 1, scope: !48, file: !1, line: 19, type: !12)
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!51 = !DILocation(line: 19, column: 15, scope: !48)
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!52 = !DILocation(line: 20, column: 3, scope: !48)
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!53 = !DILocation(line: 21, column: 11, scope: !48)
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!54 = !DILocation(line: 21, column: 3, scope: !48)
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!55 = !DILocation(line: 21, column: 8, scope: !48)
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!56 = !DILocation(line: 22, column: 10, scope: !48)
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!57 = !DILocation(line: 22, column: 3, scope: !48)
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!100 = !{!"branch_weights", i32 5}
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