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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/2010-06-29-InlinedFnLocalVar.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/2010-06-29-InlinedFnLocalVar.ll')
| -rw-r--r-- | llvm/test/DebugInfo/Generic/2010-06-29-InlinedFnLocalVar.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/DebugInfo/Generic/2010-06-29-InlinedFnLocalVar.ll b/llvm/test/DebugInfo/Generic/2010-06-29-InlinedFnLocalVar.ll index feba316213a..f01cf6db905 100644 --- a/llvm/test/DebugInfo/Generic/2010-06-29-InlinedFnLocalVar.ll +++ b/llvm/test/DebugInfo/Generic/2010-06-29-InlinedFnLocalVar.ll @@ -12,7 +12,7 @@ declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone -define i32 @bar() nounwind ssp { +define i32 @bar() nounwind ssp !dbg !6 { entry: %0 = load i32, i32* @i, align 4, !dbg !17 ; <i32> [#uses=2] tail call void @llvm.dbg.value(metadata i32 %0, i64 0, metadata !59, metadata !DIExpression()), !dbg !19 @@ -31,7 +31,7 @@ entry: !3 = !DISubroutineType(types: !4) !4 = !{!5, !5} !5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) -!6 = distinct !DISubprogram(name: "bar", linkageName: "bar", line: 14, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, file: !27, scope: !1, type: !7, function: i32 ()* @bar) +!6 = distinct !DISubprogram(name: "bar", linkageName: "bar", line: 14, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, file: !27, scope: !1, type: !7) !7 = !DISubroutineType(types: !8) !8 = !{!5} !9 = !DILocalVariable(name: "j", line: 9, arg: 1, scope: !0, file: !1, type: !5) |
