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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/SampleProfile/gcc-simple.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/SampleProfile/gcc-simple.ll')
| -rw-r--r-- | llvm/test/Transforms/SampleProfile/gcc-simple.ll | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/llvm/test/Transforms/SampleProfile/gcc-simple.ll b/llvm/test/Transforms/SampleProfile/gcc-simple.ll index 75d54bf9304..1ae927158c1 100644 --- a/llvm/test/Transforms/SampleProfile/gcc-simple.ll +++ b/llvm/test/Transforms/SampleProfile/gcc-simple.ll @@ -24,7 +24,7 @@ ; $ perf record -b ./gcc-simple ; $ create_gcov --binary=gcc-simple --gcov=gcc-simple.afdo -define i64 @_Z3fool(i64 %i) #0 { +define i64 @_Z3fool(i64 %i) #0 !dbg !4 { ; CHECK: !prof ![[EC1:[0-9]+]] entry: %retval = alloca i64, align 8 @@ -66,7 +66,7 @@ declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 declare i32 @rand() #2 ; Function Attrs: nounwind uwtable -define i32 @main() #0 { +define i32 @main() #0 !dbg !9 { ; CHECK: !prof ![[EC2:[0-9]+]] entry: %retval = alloca i32, align 4 @@ -148,12 +148,12 @@ attributes #3 = { nounwind } !1 = !DIFile(filename: "discriminator.cc", directory: "/usr/local/google/home/dnovillo/llvm/test/autofdo") !2 = !{} !3 = !{!4, !9} -!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fool", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, function: i64 (i64)* @_Z3fool, variables: !2) +!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fool", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, variables: !2) !5 = !DISubroutineType(types: !6) !6 = !{!7, !8} !7 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed) !8 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) -!9 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !10, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, function: i32 ()* @main, variables: !2) +!9 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !10, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, variables: !2) !10 = !DISubroutineType(types: !11) !11 = !{!12} !12 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
