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llvm-project/llvm/test/Transforms/SampleProfile/cov-zero-samples.ll
Eli Friedman 51cf2604b6 [OptDiag] Updating Remarks in SampleProfile 
Updating remark API to newer OptimizationDiagnosticInfo API. This
allows remarks to show up in diagnostic yaml file, and enables use
of opt-viewer tool.

Hotness information for remarks (L505 and L751) do not display hotness
information, most likely due to profile information not being
propagated yet. Unsure if this is the desired outcome.

Patch by Tarun Rajendran.

Differential Revision: https://reviews.llvm.org/D36127

llvm-svn: 310763
2017-08-11 21:12:04 +00:00

148 lines
7.4 KiB
LLVM
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; RUN: opt < %s -instcombine -sample-profile -sample-profile-file=%S/Inputs/cov-zero-samples.prof -sample-profile-check-record-coverage=100 -pass-remarks=sample-profile -pass-remarks-analysis=sample-profile -o /dev/null 2>&1 | FileCheck %s
; RUN: opt < %s -passes="function(instcombine),sample-profile" -sample-profile-file=%S/Inputs/cov-zero-samples.prof -sample-profile-check-record-coverage=100 -pass-remarks=sample-profile -pass-remarks-analysis=sample-profile -o /dev/null 2>&1 | FileCheck %s
;
; CHECK: remark: cov-zero-samples.cc:9:29: Applied 404065 samples from profile (offset: 2.1)
; CHECK: remark: cov-zero-samples.cc:10:9: Applied 443089 samples from profile (offset: 3)
; CHECK: remark: cov-zero-samples.cc:10:36: Applied 0 samples from profile (offset: 3.1)
; CHECK: remark: cov-zero-samples.cc:11:12: Applied 404066 samples from profile (offset: 4)
; CHECK: remark: cov-zero-samples.cc:13:25: Applied 0 samples from profile (offset: 6)
; CHECK: remark: cov-zero-samples.cc:14:3: Applied 0 samples from profile (offset: 7)
; CHECK: remark: cov-zero-samples.cc:10:9: most popular destination for conditional branches at cov-zero-samples.cc:9:3
; CHECK: remark: cov-zero-samples.cc:11:12: most popular destination for conditional branches at cov-zero-samples.cc:10:9
;
; Coverage for this profile should be 100%
; CHECK-NOT: warning: cov-zero-samples.cc:1:
source_filename = "test/Transforms/SampleProfile/cov-zero-samples.ll"
@N = global i64 8000000000, align 8, !dbg !0
@.str = private unnamed_addr constant [11 x i8] c"sum is %d\0A\00", align 1
define i32 @_Z12never_calledi(i32 %i) !dbg !11 {
entry:
ret i32 0, !dbg !15
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
define i32 @main() !dbg !17 {
entry:
%retval = alloca i32, align 4
%sum = alloca i32, align 4
%i = alloca i64, align 8
store i32 0, i32* %retval, align 4
call void @llvm.dbg.declare(metadata i32* %sum, metadata !20, metadata !21), !dbg !22
store i32 0, i32* %sum, align 4, !dbg !22
call void @llvm.dbg.declare(metadata i64* %i, metadata !23, metadata !21), !dbg !25
store i64 0, i64* %i, align 8, !dbg !25
br label %for.cond, !dbg !26
for.cond: ; preds = %for.inc, %entry
%0 = load i64, i64* %i, align 8, !dbg !27
%1 = load volatile i64, i64* @N, align 8, !dbg !30
%cmp = icmp slt i64 %0, %1, !dbg !31
br i1 %cmp, label %for.body, label %for.end, !dbg !32
for.body: ; preds = %for.cond
%2 = load i64, i64* %i, align 8, !dbg !33
%3 = load volatile i64, i64* @N, align 8, !dbg !36
%cmp1 = icmp sgt i64 %2, %3, !dbg !37
br i1 %cmp1, label %if.then, label %if.end, !dbg !38
if.then: ; preds = %for.body
%4 = load i64, i64* %i, align 8, !dbg !39
%conv = trunc i64 %4 to i32, !dbg !39
%call = call i32 @_Z12never_calledi(i32 %conv), !dbg !41
%5 = load i32, i32* %sum, align 4, !dbg !42
%add = add nsw i32 %5, %call, !dbg !42
store i32 %add, i32* %sum, align 4, !dbg !42
br label %if.end, !dbg !43
if.end: ; preds = %if.then, %for.body
%6 = load i64, i64* %i, align 8, !dbg !44
%div = sdiv i64 %6, 239, !dbg !45
%7 = load i32, i32* %sum, align 4, !dbg !46
%conv2 = sext i32 %7 to i64, !dbg !46
%mul = mul nsw i64 %conv2, %div, !dbg !46
%conv3 = trunc i64 %mul to i32, !dbg !46
store i32 %conv3, i32* %sum, align 4, !dbg !46
br label %for.inc, !dbg !47
for.inc: ; preds = %if.end
%8 = load i64, i64* %i, align 8, !dbg !48
%inc = add nsw i64 %8, 1, !dbg !48
store i64 %inc, i64* %i, align 8, !dbg !48
br label %for.cond, !dbg !50
for.end: ; preds = %for.cond
%9 = load i32, i32* %sum, align 4, !dbg !51
%call4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i32 0, i32 0), i32 %9), !dbg !52
ret i32 0, !dbg !53
}
declare i32 @printf(i8*, ...)
attributes #0 = { nounwind readnone }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!8, !9}
!llvm.ident = !{!10}
!0 = !DIGlobalVariableExpression(var: !1)
!1 = !DIGlobalVariable(name: "N", scope: !2, file: !3, line: 3, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 3.8.0 (trunk 253667) (llvm/trunk 253670)", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "cov-zero-samples.cc", directory: ".")
!4 = !{}
!5 = !{!0}
!6 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
!7 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed)
!8 = !{i32 2, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{!"clang version 3.8.0 (trunk 253667) (llvm/trunk 253670)"}
!11 = distinct !DISubprogram(name: "never_called", linkageName: "_Z12never_calledi", scope: !3, file: !3, line: 5, type: !12, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, unit: !2, variables: !4)
!12 = !DISubroutineType(types: !13)
!13 = !{!14, !14}
!14 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!15 = !DILocation(line: 5, column: 27, scope: !16)
!16 = !DILexicalBlockFile(scope: !11, file: !3, discriminator: 6)
!17 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 7, type: !18, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, unit: !2, variables: !4)
!18 = !DISubroutineType(types: !19)
!19 = !{!14}
!20 = !DILocalVariable(name: "sum", scope: !17, file: !3, line: 8, type: !14)
!21 = !DIExpression()
!22 = !DILocation(line: 8, column: 7, scope: !17)
!23 = !DILocalVariable(name: "i", scope: !24, file: !3, line: 9, type: !7)
!24 = distinct !DILexicalBlock(scope: !17, file: !3, line: 9, column: 3)
!25 = !DILocation(line: 9, column: 18, scope: !24)
!26 = !DILocation(line: 9, column: 8, scope: !24)
!27 = !DILocation(line: 9, column: 25, scope: !28)
!28 = !DILexicalBlockFile(scope: !29, file: !3, discriminator: 2)
!29 = distinct !DILexicalBlock(scope: !24, file: !3, line: 9, column: 3)
!30 = !DILocation(line: 9, column: 29, scope: !28)
!31 = !DILocation(line: 9, column: 27, scope: !28)
!32 = !DILocation(line: 9, column: 3, scope: !28)
!33 = !DILocation(line: 10, column: 9, scope: !34)
!34 = distinct !DILexicalBlock(scope: !35, file: !3, line: 10, column: 9)
!35 = distinct !DILexicalBlock(scope: !29, file: !3, line: 9, column: 37)
!36 = !DILocation(line: 10, column: 13, scope: !34)
!37 = !DILocation(line: 10, column: 11, scope: !34)
!38 = !DILocation(line: 10, column: 9, scope: !35)
!39 = !DILocation(line: 10, column: 36, scope: !40)
!40 = !DILexicalBlockFile(scope: !34, file: !3, discriminator: 2)
!41 = !DILocation(line: 10, column: 23, scope: !40)
!42 = !DILocation(line: 10, column: 20, scope: !40)
!43 = !DILocation(line: 10, column: 16, scope: !40)
!44 = !DILocation(line: 11, column: 12, scope: !35)
!45 = !DILocation(line: 11, column: 14, scope: !35)
!46 = !DILocation(line: 11, column: 9, scope: !35)
!47 = !DILocation(line: 12, column: 3, scope: !35)
!48 = !DILocation(line: 9, column: 33, scope: !49)
!49 = !DILexicalBlockFile(scope: !29, file: !3, discriminator: 4)
!50 = !DILocation(line: 9, column: 3, scope: !49)
!51 = !DILocation(line: 13, column: 25, scope: !17)
!52 = !DILocation(line: 13, column: 3, scope: !17)
!53 = !DILocation(line: 14, column: 3, scope: !17)
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