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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/CodeGen/X86/MachineSink-DbgValue.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/CodeGen/X86/MachineSink-DbgValue.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/MachineSink-DbgValue.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/CodeGen/X86/MachineSink-DbgValue.ll b/llvm/test/CodeGen/X86/MachineSink-DbgValue.ll index 2f1a7b082b8..457d9beb37d 100644 --- a/llvm/test/CodeGen/X86/MachineSink-DbgValue.ll +++ b/llvm/test/CodeGen/X86/MachineSink-DbgValue.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-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" target triple = "x86_64-apple-macosx10.7.0" -define i32 @foo(i32 %i, i32* nocapture %c) nounwind uwtable readonly ssp { +define i32 @foo(i32 %i, i32* nocapture %c) nounwind uwtable readonly ssp !dbg !1 { tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !6, metadata !DIExpression()), !dbg !12 %ab = load i32, i32* %c, align 1, !dbg !14 tail call void @llvm.dbg.value(metadata i32* %c, i64 0, metadata !7, metadata !DIExpression()), !dbg !13 @@ -29,7 +29,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon !llvm.module.flags = !{!22} !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "Apple clang version 3.0 (tags/Apple/clang-211.10.1) (based on LLVM 3.0svn)", isOptimized: true, emissionKind: 1, file: !20, enums: !21, retainedTypes: !21, subprograms: !18, imports: null) -!1 = distinct !DISubprogram(name: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, file: !20, scope: !2, type: !3, function: i32 (i32, i32*)* @foo, variables: !19) +!1 = distinct !DISubprogram(name: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, file: !20, scope: !2, type: !3, variables: !19) !2 = !DIFile(filename: "a.c", directory: "/private/tmp") !3 = !DISubroutineType(types: !4) !4 = !{!5} |
