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| author | Peter Collingbourne <peter@pcc.me.uk> | 2015-11-05 22:03:56 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2015-11-05 22:03:56 +0000 |
| commit | d4bff30370db9f2cb13838897012768739cf1ee0 (patch) | |
| tree | f6c80f666794291c78575617d326207f57939b61 /llvm/test/Instrumentation/SanitizerCoverage/coverage-dbg.ll | |
| parent | 18da38edb315fe9e063348c4d785b26111b6d7ec (diff) | |
| download | bcm5719-llvm-d4bff30370db9f2cb13838897012768739cf1ee0.tar.gz bcm5719-llvm-d4bff30370db9f2cb13838897012768739cf1ee0.zip | |
DI: Reverse direction of subprogram -> function edge.
Previously, subprograms contained a metadata reference to the function they
described. Because most clients need to get or set a subprogram for a given
function rather than the other way around, this created unneeded inefficiency.
For example, many passes needed to call the function llvm::makeSubprogramMap()
to build a mapping from functions to subprograms, and the IR linker needed to
fix up function references in a way that caused quadratic complexity in the IR
linking phase of LTO.
This change reverses the direction of the edge by storing the subprogram as
function-level metadata and removing DISubprogram's function field.
Since this is an IR change, a bitcode upgrade has been provided.
Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is
attached to the PR.
Differential Revision: http://reviews.llvm.org/D14265
llvm-svn: 252219
Diffstat (limited to 'llvm/test/Instrumentation/SanitizerCoverage/coverage-dbg.ll')
| -rw-r--r-- | llvm/test/Instrumentation/SanitizerCoverage/coverage-dbg.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/Instrumentation/SanitizerCoverage/coverage-dbg.ll b/llvm/test/Instrumentation/SanitizerCoverage/coverage-dbg.ll index b312f02924b..93d0f881625 100644 --- a/llvm/test/Instrumentation/SanitizerCoverage/coverage-dbg.ll +++ b/llvm/test/Instrumentation/SanitizerCoverage/coverage-dbg.ll @@ -25,7 +25,7 @@ target triple = "x86_64-unknown-linux-gnu" %struct.A = type { i32 } ; Function Attrs: nounwind readonly uwtable -define i32 @_ZN1A1fEv(%struct.A* nocapture readonly %this) #0 align 2 { +define i32 @_ZN1A1fEv(%struct.A* nocapture readonly %this) #0 align 2 !dbg !13 { entry: tail call void @llvm.dbg.value(metadata %struct.A* %this, i64 0, metadata !15, metadata !DIExpression()), !dbg !20 %x = getelementptr inbounds %struct.A, %struct.A* %this, i64 0, i32 0, !dbg !21 @@ -56,7 +56,7 @@ attributes #1 = { nounwind readnone } !10 = !{!7, !11} !11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1A") !12 = !{!13} -!13 = distinct !DISubprogram(name: "f", linkageName: "_ZN1A1fEv", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 6, file: !1, scope: !"_ZTS1A", type: !9, function: i32 (%struct.A*)* @_ZN1A1fEv, declaration: !8, variables: !14) +!13 = distinct !DISubprogram(name: "f", linkageName: "_ZN1A1fEv", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 6, file: !1, scope: !"_ZTS1A", type: !9, declaration: !8, variables: !14) !14 = !{!15} !15 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !13, type: !16) !16 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS1A") |
