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llvm-mirror/test/Transforms/SampleProfile/cov-zero-samples.ll
Peter Collingbourne a9fbb2813b DebugInfo: New metadata representation for global variables. 
This patch reverses the edge from DIGlobalVariable to GlobalVariable.
This will allow us to more easily preserve debug info metadata when
manipulating global variables.

Fixes PR30362. A program for upgrading test cases is attached to that
bug.

Differential Revision: http://reviews.llvm.org/D20147

llvm-svn: 281284
2016-09-13 01:12:59 +00:00

143 lines
7.2 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 -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 -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:
@N = global i64 8000000000, align 8, !dbg !12
@.str = private unnamed_addr constant [11 x i8] c"sum is %d\0A\00", align 1
; Function Attrs: nounwind uwtable
define i32 @_Z12never_calledi(i32 %i) !dbg !4 {
entry:
ret i32 0, !dbg !32
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata)
; Function Attrs: norecurse uwtable
define i32 @main() !dbg !8 {
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 !33, metadata !19), !dbg !34
store i32 0, i32* %sum, align 4, !dbg !34
call void @llvm.dbg.declare(metadata i64* %i, metadata !35, metadata !19), !dbg !37
store i64 0, i64* %i, align 8, !dbg !37
br label %for.cond, !dbg !38
for.cond: ; preds = %for.inc, %entry
%0 = load i64, i64* %i, align 8, !dbg !39
%1 = load volatile i64, i64* @N, align 8, !dbg !42
%cmp = icmp slt i64 %0, %1, !dbg !43
br i1 %cmp, label %for.body, label %for.end, !dbg !44
for.body: ; preds = %for.cond
%2 = load i64, i64* %i, align 8, !dbg !45
%3 = load volatile i64, i64* @N, align 8, !dbg !48
%cmp1 = icmp sgt i64 %2, %3, !dbg !49
br i1 %cmp1, label %if.then, label %if.end, !dbg !50
if.then: ; preds = %for.body
%4 = load i64, i64* %i, align 8, !dbg !51
%conv = trunc i64 %4 to i32, !dbg !51
%call = call i32 @_Z12never_calledi(i32 %conv), !dbg !53
%5 = load i32, i32* %sum, align 4, !dbg !54
%add = add nsw i32 %5, %call, !dbg !54
store i32 %add, i32* %sum, align 4, !dbg !54
br label %if.end, !dbg !55
if.end: ; preds = %if.then, %for.body
%6 = load i64, i64* %i, align 8, !dbg !56
%div = sdiv i64 %6, 239, !dbg !57
%7 = load i32, i32* %sum, align 4, !dbg !58
%conv2 = sext i32 %7 to i64, !dbg !58
%mul = mul nsw i64 %conv2, %div, !dbg !58
%conv3 = trunc i64 %mul to i32, !dbg !58
store i32 %conv3, i32* %sum, align 4, !dbg !58
br label %for.inc, !dbg !59
for.inc: ; preds = %if.end
%8 = load i64, i64* %i, align 8, !dbg !60
%inc = add nsw i64 %8, 1, !dbg !60
store i64 %inc, i64* %i, align 8, !dbg !60
br label %for.cond, !dbg !62
for.end: ; preds = %for.cond
%9 = load i32, i32* %sum, align 4, !dbg !63
%call4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i32 0, i32 0), i32 %9), !dbg !64
ret i32 0, !dbg !65
}
declare i32 @printf(i8*, ...)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!15, !16}
!llvm.ident = !{!17}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 253667) (llvm/trunk 253670)", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !2, globals: !11)
!1 = !DIFile(filename: "cov-zero-samples.cc", directory: ".")
!2 = !{}
!4 = distinct !DISubprogram(name: "never_called", linkageName: "_Z12never_calledi", scope: !1, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
!5 = !DISubroutineType(types: !6)
!6 = !{!7, !7}
!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!8 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !9, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
!9 = !DISubroutineType(types: !10)
!10 = !{!7}
!11 = !{!12}
!12 = !DIGlobalVariable(name: "N", scope: !0, file: !1, line: 3, type: !13, isLocal: false, isDefinition: true)
!13 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !14)
!14 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed)
!15 = !{i32 2, !"Dwarf Version", i32 4}
!16 = !{i32 2, !"Debug Info Version", i32 3}
!17 = !{!"clang version 3.8.0 (trunk 253667) (llvm/trunk 253670)"}
!19 = !DIExpression()
!31 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 3)
!32 = !DILocation(line: 5, column: 27, scope: !31)
!33 = !DILocalVariable(name: "sum", scope: !8, file: !1, line: 8, type: !7)
!34 = !DILocation(line: 8, column: 7, scope: !8)
!35 = !DILocalVariable(name: "i", scope: !36, file: !1, line: 9, type: !14)
!36 = distinct !DILexicalBlock(scope: !8, file: !1, line: 9, column: 3)
!37 = !DILocation(line: 9, column: 18, scope: !36)
!38 = !DILocation(line: 9, column: 8, scope: !36)
!39 = !DILocation(line: 9, column: 25, scope: !40)
!40 = !DILexicalBlockFile(scope: !41, file: !1, discriminator: 1)
!41 = distinct !DILexicalBlock(scope: !36, file: !1, line: 9, column: 3)
!42 = !DILocation(line: 9, column: 29, scope: !40)
!43 = !DILocation(line: 9, column: 27, scope: !40)
!44 = !DILocation(line: 9, column: 3, scope: !40)
!45 = !DILocation(line: 10, column: 9, scope: !46)
!46 = distinct !DILexicalBlock(scope: !47, file: !1, line: 10, column: 9)
!47 = distinct !DILexicalBlock(scope: !41, file: !1, line: 9, column: 37)
!48 = !DILocation(line: 10, column: 13, scope: !46)
!49 = !DILocation(line: 10, column: 11, scope: !46)
!50 = !DILocation(line: 10, column: 9, scope: !47)
!51 = !DILocation(line: 10, column: 36, scope: !52)
!52 = !DILexicalBlockFile(scope: !46, file: !1, discriminator: 1)
!53 = !DILocation(line: 10, column: 23, scope: !52)
!54 = !DILocation(line: 10, column: 20, scope: !52)
!55 = !DILocation(line: 10, column: 16, scope: !52)
!56 = !DILocation(line: 11, column: 12, scope: !47)
!57 = !DILocation(line: 11, column: 14, scope: !47)
!58 = !DILocation(line: 11, column: 9, scope: !47)
!59 = !DILocation(line: 12, column: 3, scope: !47)
!60 = !DILocation(line: 9, column: 33, scope: !61)
!61 = !DILexicalBlockFile(scope: !41, file: !1, discriminator: 2)
!62 = !DILocation(line: 9, column: 3, scope: !61)
!63 = !DILocation(line: 13, column: 25, scope: !8)
!64 = !DILocation(line: 13, column: 3, scope: !8)
!65 = !DILocation(line: 14, column: 3, scope: !8)
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