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authorPeter Collingbourne <peter@pcc.me.uk>2015-11-05 22:03:56 +0000
committerPeter Collingbourne <peter@pcc.me.uk>2015-11-05 22:03:56 +0000
commitd4bff30370db9f2cb13838897012768739cf1ee0 (patch)
treef6c80f666794291c78575617d326207f57939b61 /llvm/test/DebugInfo/Generic/2010-06-29-InlinedFnLocalVar.ll
parent18da38edb315fe9e063348c4d785b26111b6d7ec (diff)
downloadbcm5719-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.ll4
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)
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