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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/LoopSimplify | |
| 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/LoopSimplify')
| -rw-r--r-- | llvm/test/Transforms/LoopSimplify/dbg-loc.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/Transforms/LoopSimplify/dbg-loc.ll b/llvm/test/Transforms/LoopSimplify/dbg-loc.ll index 1395a210ffe..b0e14bbcfd7 100644 --- a/llvm/test/Transforms/LoopSimplify/dbg-loc.ll +++ b/llvm/test/Transforms/LoopSimplify/dbg-loc.ll @@ -16,7 +16,7 @@ declare void @f3() ; CHECK: for.end.loopexit: ; CHECK-NEXT: br label %for.end, !dbg [[LOOPEXIT_LOC:![0-9]+]] -define linkonce_odr hidden void @foo(%"Length"* %begin, %"Length"* %end) nounwind ssp uwtable align 2 { +define linkonce_odr hidden void @foo(%"Length"* %begin, %"Length"* %end) nounwind ssp uwtable align 2 !dbg !6 { entry: %cmp.4 = icmp eq %"Length"* %begin, %end, !dbg !7 br i1 %cmp.4, label %for.end, label %for.body, !dbg !8 @@ -80,7 +80,7 @@ eh.resume: ; preds = %catch !3 = !{} !4 = !DISubroutineType(types: !3) !5 = !DIFile(filename: "Vector.h", directory: "/tmp") -!6 = distinct !DISubprogram(name: "destruct", scope: !5, file: !5, line: 71, type: !4, isLocal: false, isDefinition: true, scopeLine: 72, flags: DIFlagPrototyped, isOptimized: false, function: void (%"Length"*, %"Length"*)* @foo, variables: !3) +!6 = distinct !DISubprogram(name: "destruct", scope: !5, file: !5, line: 71, type: !4, isLocal: false, isDefinition: true, scopeLine: 72, flags: DIFlagPrototyped, isOptimized: false, variables: !3) !7 = !DILocation(line: 73, column: 38, scope: !6) !8 = !DILocation(line: 73, column: 13, scope: !6) !9 = !DILocation(line: 73, column: 27, scope: !6) |
