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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/SafeStack | |
| 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/SafeStack')
| -rw-r--r-- | llvm/test/Transforms/SafeStack/debug-loc.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/Transforms/SafeStack/debug-loc.ll b/llvm/test/Transforms/SafeStack/debug-loc.ll index d157ee6e65a..57d565f8cfd 100644 --- a/llvm/test/Transforms/SafeStack/debug-loc.ll +++ b/llvm/test/Transforms/SafeStack/debug-loc.ll @@ -24,7 +24,7 @@ target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" ; Function Attrs: safestack uwtable -define void @f() #0 { +define void @f() #0 !dbg !4 { entry: %buf = alloca [100 x i32], align 16 %0 = bitcast [100 x i32]* %buf to i8*, !dbg !16 @@ -63,7 +63,7 @@ attributes #4 = { nounwind } !1 = !DIFile(filename: "1.cc", directory: "/tmp") !2 = !{} !3 = !{!4} -!4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, function: void ()* @f, variables: !7) +!4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, variables: !7) !5 = !DISubroutineType(types: !6) !6 = !{null} !7 = !{!8} |
