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/Transforms/LoopIdiom | |
| 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/Transforms/LoopIdiom')
| -rw-r--r-- | test/Transforms/LoopIdiom/debug-line.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/test/Transforms/LoopIdiom/debug-line.ll b/test/Transforms/LoopIdiom/debug-line.ll index de53752bfdc..a85e4899754 100644 --- a/test/Transforms/LoopIdiom/debug-line.ll +++ b/test/Transforms/LoopIdiom/debug-line.ll @@ -3,7 +3,7 @@ target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f3 target triple = "x86_64-apple-darwin10.0.0" -define void @foo(double* nocapture %a) nounwind ssp { +define void @foo(double* nocapture %a) nounwind ssp !dbg !0 { entry: tail call void @llvm.dbg.value(metadata double* %a, i64 0, metadata !5, metadata !DIExpression()), !dbg !8 tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !10, metadata !DIExpression()), !dbg !14 @@ -30,7 +30,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon !llvm.module.flags = !{!19} !llvm.dbg.sp = !{!0} -!0 = distinct !DISubprogram(name: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !18, scope: !1, type: !3, function: void (double*)* @foo) +!0 = distinct !DISubprogram(name: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !18, scope: !1, type: !3) !1 = !DIFile(filename: "li.c", directory: "/private/tmp") !2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 127165:127174)", isOptimized: true, emissionKind: 0, file: !18, enums: !9, retainedTypes: !9) !3 = !DISubroutineType(types: !4) |