diff options
| 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 | 5f220beefcb655de6aae7c80b456fd4e5cb76ac0 (patch) | |
| tree | d478c6bd28ca4a860f194ccd49ec67aa8f6b062e /test/CodeGen/Hexagon/hwloop-dbg.ll | |
| parent | cc5dc01d7f7b6acdc7160fe30fda00e3b1b48687 (diff) | |
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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252219 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/Hexagon/hwloop-dbg.ll')
| -rw-r--r-- | test/CodeGen/Hexagon/hwloop-dbg.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/test/CodeGen/Hexagon/hwloop-dbg.ll b/test/CodeGen/Hexagon/hwloop-dbg.ll index af208b3a4da..341f8db9e33 100644 --- a/test/CodeGen/Hexagon/hwloop-dbg.ll +++ b/test/CodeGen/Hexagon/hwloop-dbg.ll @@ -3,7 +3,7 @@ target datalayout = "e-p:32:32:32-i64:64:64-i32:32:32-i16:16:16-i1:32:32-f64:64:64-f32:32:32-v64:64:64-v32:32:32-a0:0-n16:32" target triple = "hexagon" -define void @foo(i32* nocapture %a, i32* nocapture %b) nounwind { +define void @foo(i32* nocapture %a, i32* nocapture %b) nounwind !dbg !5 { entry: tail call void @llvm.dbg.value(metadata i32* %a, i64 0, metadata !13, metadata !DIExpression()), !dbg !17 tail call void @llvm.dbg.value(metadata i32* %b, i64 0, metadata !14, metadata !DIExpression()), !dbg !18 @@ -40,7 +40,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "QuIC LLVM Hexagon Clang version 6.1-pre-unknown, (git://git-hexagon-aus.quicinc.com/llvm/clang-mainline.git e9382867661454cdf44addb39430741578e9765c) (llvm/llvm-mainline.git 36412bb1fcf03ed426d4437b41198bae066675ac)", isOptimized: true, emissionKind: 1, file: !28, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2) !2 = !{} !3 = !{!5} -!5 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !28, scope: null, type: !7, function: void (i32*, i32*)* @foo, variables: !11) +!5 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !28, scope: null, type: !7, variables: !11) !6 = !DIFile(filename: "hwloop-dbg.c", directory: "/usr2/kparzysz/s.hex/t") !7 = !DISubroutineType(types: !8) !8 = !{null, !9, !9} |