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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/DebugInfo/Generic/missing-abstract-variable.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/DebugInfo/Generic/missing-abstract-variable.ll')
| -rw-r--r-- | llvm/test/DebugInfo/Generic/missing-abstract-variable.ll | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/llvm/test/DebugInfo/Generic/missing-abstract-variable.ll b/llvm/test/DebugInfo/Generic/missing-abstract-variable.ll index 0ebb5a28edc..ee4f1666d2b 100644 --- a/llvm/test/DebugInfo/Generic/missing-abstract-variable.ll +++ b/llvm/test/DebugInfo/Generic/missing-abstract-variable.ll @@ -97,7 +97,7 @@ @t = external global i32 ; Function Attrs: uwtable -define void @_Z1bv() #0 { +define void @_Z1bv() #0 !dbg !4 { entry: tail call void @llvm.dbg.value(metadata i1 false, i64 0, metadata !25, metadata !DIExpression()), !dbg !27 tail call void @_Z1fi(i32 0), !dbg !28 @@ -105,7 +105,7 @@ entry: } ; Function Attrs: uwtable -define void @_Z1ab(i1 zeroext %u) #0 { +define void @_Z1ab(i1 zeroext %u) #0 !dbg !8 { entry: tail call void @llvm.dbg.value(metadata i1 %u, i64 0, metadata !13, metadata !DIExpression()), !dbg !30 tail call void @llvm.dbg.value(metadata i1 %u, i64 0, metadata !31, metadata !DIExpression()), !dbg !33 @@ -139,11 +139,11 @@ attributes #2 = { nounwind readnone } !1 = !DIFile(filename: "missing-abstract-variables.cc", directory: "/tmp/dbginfo") !2 = !{} !3 = !{!4, !8, !14} -!4 = distinct !DISubprogram(name: "b", linkageName: "_Z1bv", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 13, file: !1, scope: !5, type: !6, function: void ()* @_Z1bv, variables: !2) +!4 = distinct !DISubprogram(name: "b", linkageName: "_Z1bv", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 13, file: !1, scope: !5, type: !6, variables: !2) !5 = !DIFile(filename: "missing-abstract-variables.cc", directory: "/tmp/dbginfo") !6 = !DISubroutineType(types: !7) !7 = !{null} -!8 = distinct !DISubprogram(name: "a", linkageName: "_Z1ab", line: 17, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 17, file: !1, scope: !5, type: !9, function: void (i1)* @_Z1ab, variables: !12) +!8 = distinct !DISubprogram(name: "a", linkageName: "_Z1ab", line: 17, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 17, file: !1, scope: !5, type: !9, variables: !12) !9 = !DISubroutineType(types: !10) !10 = !{null, !11} !11 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean) |
