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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/Mem2Reg/ConvertDebugInfo2.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/Mem2Reg/ConvertDebugInfo2.ll')
| -rw-r--r-- | llvm/test/Transforms/Mem2Reg/ConvertDebugInfo2.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/Transforms/Mem2Reg/ConvertDebugInfo2.ll b/llvm/test/Transforms/Mem2Reg/ConvertDebugInfo2.ll index 331ddc773b0..071d708e1fe 100644 --- a/llvm/test/Transforms/Mem2Reg/ConvertDebugInfo2.ll +++ b/llvm/test/Transforms/Mem2Reg/ConvertDebugInfo2.ll @@ -4,7 +4,7 @@ declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone declare void @foo(i32, i64, i8*) -define void @baz(i32 %a) nounwind ssp { +define void @baz(i32 %a) nounwind ssp !dbg !1 { ; CHECK-LABEL: entry: ; CHECK-NEXT: %"alloca point" = bitcast i32 0 to i32{{$}} ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a,{{.*}}, !dbg @@ -43,7 +43,7 @@ return: ; preds = %entry !llvm.dbg.cu = !{!3} !llvm.module.flags = !{!22} !0 = !DILocalVariable(name: "a", line: 8, arg: 1, scope: !1, file: !2, type: !6) -!1 = distinct !DISubprogram(name: "baz", linkageName: "baz", line: 8, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 8, file: !20, scope: !2, type: !4, function: void (i32)* @baz) +!1 = distinct !DISubprogram(name: "baz", linkageName: "baz", line: 8, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 8, file: !20, scope: !2, type: !4) !2 = !DIFile(filename: "bar.c", directory: "/tmp/") !3 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !20, enums: !21, retainedTypes: !21, subprograms: !{!1}) !4 = !DISubroutineType(types: !5) |
