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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/Transforms/GCOVProfiling/global-ctor.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/Transforms/GCOVProfiling/global-ctor.ll')
| -rw-r--r-- | llvm/test/Transforms/GCOVProfiling/global-ctor.ll | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/test/Transforms/GCOVProfiling/global-ctor.ll b/llvm/test/Transforms/GCOVProfiling/global-ctor.ll index 8c1f5baedbc..47600c7bfca 100644 --- a/llvm/test/Transforms/GCOVProfiling/global-ctor.ll +++ b/llvm/test/Transforms/GCOVProfiling/global-ctor.ll @@ -8,7 +8,7 @@ @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_global-ctor.ll, i8* null }] ; Function Attrs: nounwind -define internal void @__cxx_global_var_init() #0 section ".text.startup" { +define internal void @__cxx_global_var_init() #0 section ".text.startup" !dbg !4 { entry: br label %0 @@ -42,11 +42,11 @@ attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" " !1 = !DIFile(filename: "<stdin>", directory: "/home/nlewycky") !2 = !{} !3 = !{!4, !8} -!4 = distinct !DISubprogram(name: "__cxx_global_var_init", line: 2, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !5, scope: !6, type: !7, function: void ()* @__cxx_global_var_init, variables: !2) +!4 = distinct !DISubprogram(name: "__cxx_global_var_init", line: 2, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !5, scope: !6, type: !7, variables: !2) !5 = !DIFile(filename: "global-ctor.ll", directory: "/home/nlewycky") !6 = !DIFile(filename: "global-ctor.ll", directory: "/home/nlewycky") !7 = !DISubroutineType(types: !2) -!8 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__sub_I_global-ctor.ll", isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagArtificial, isOptimized: false, file: !1, scope: !9, type: !7, function: void ()* @_GLOBAL__sub_I_global-ctor.ll, variables: !2) +!8 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__sub_I_global-ctor.ll", isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagArtificial, isOptimized: false, file: !1, scope: !9, type: !7, variables: !2) !9 = !DIFile(filename: "<stdin>", directory: "/home/nlewycky") !10 = !{i32 2, !"Dwarf Version", i32 4} !11 = !{i32 2, !"Debug Info Version", i32 3} |
