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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/InstCombine/debug-line.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/Transforms/InstCombine/debug-line.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/debug-line.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/Transforms/InstCombine/debug-line.ll b/llvm/test/Transforms/InstCombine/debug-line.ll index 1160daf0db0..4b1db9db353 100644 --- a/llvm/test/Transforms/InstCombine/debug-line.ll +++ b/llvm/test/Transforms/InstCombine/debug-line.ll @@ -3,7 +3,7 @@ @.str = private constant [3 x i8] c"%c\00" -define void @foo() nounwind ssp { +define void @foo() nounwind ssp !dbg !0 { ;CHECK: call i32 @putchar{{.+}} !dbg %1 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i32 0, i32 0), i32 97), !dbg !5 ret void, !dbg !7 @@ -15,7 +15,7 @@ declare i32 @printf(i8*, ...) !llvm.module.flags = !{!10} !llvm.dbg.sp = !{!0} -!0 = distinct !DISubprogram(name: "foo", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !8, scope: !1, type: !3, function: void ()* @foo) +!0 = distinct !DISubprogram(name: "foo", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !8, scope: !1, type: !3) !1 = !DIFile(filename: "m.c", directory: "/private/tmp") !2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang", isOptimized: true, emissionKind: 0, file: !8, enums: !{}, retainedTypes: !{}, subprograms: !9) !3 = !DISubroutineType(types: !4) |
