adebb9379a
llvm::getDISubprogram walks the instructions in a function, looking for one in the scope of the current function, so that it can find the !dbg entry for the subprogram itself. Now that !dbg is attached to functions, this should not be necessary. This patch changes all uses to just query the subprogram directly on the function. Ideally this should be NFC, but in reality its possible that a function: has no !dbg (in which case there's likely a bug somewhere in an opt pass), or that none of the instructions had a scope referencing the function, so we used to not find the !dbg on the function but now we will Reviewed by Duncan Exon Smith. Differential Revision: http://reviews.llvm.org/D18074 llvm-svn: 263184
53 lines
2.8 KiB
LLVM
53 lines
2.8 KiB
LLVM
; RUN: opt < %s -add-discriminators -S | FileCheck %s
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; Discriminator support for calls that are defined in one line:
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; #1 void bar();
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; #2
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; #3 void foo() {
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; #4 bar();bar()/*discriminator 1*/;bar()/*discriminator 2*/;
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; #5 }
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; Function Attrs: uwtable
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define void @_Z3foov() #0 !dbg !4 {
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call void @_Z3barv(), !dbg !10
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; CHECK: call void @_Z3barv(), !dbg ![[CALL0:[0-9]+]]
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call void @_Z3barv(), !dbg !11
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; CHECK: call void @_Z3barv(), !dbg ![[CALL1:[0-9]+]]
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call void @_Z3barv(), !dbg !12
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; CHECK: call void @_Z3barv(), !dbg ![[CALL2:[0-9]+]]
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ret void, !dbg !13
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}
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declare void @_Z3barv() #1
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attributes #0 = { uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
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; We should be able to add discriminators even in the absence of llvm.dbg.cu.
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; When using sample profiles, the front end will generate line tables but it
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; does not generate llvm.dbg.cu to prevent codegen from emitting debug info
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; to the final binary.
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; !llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!7, !8}
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!llvm.ident = !{!9}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 250915) (llvm/trunk 251830)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3)
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!1 = !DIFile(filename: "c.cc", directory: "/tmp")
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!2 = !{}
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!3 = !{!4}
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!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
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!5 = !DISubroutineType(types: !6)
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!6 = !{null}
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{!"clang version 3.8.0 (trunk 250915) (llvm/trunk 251830)"}
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!10 = !DILocation(line: 4, column: 3, scope: !4)
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!11 = !DILocation(line: 4, column: 9, scope: !4)
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!12 = !DILocation(line: 4, column: 15, scope: !4)
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!13 = !DILocation(line: 5, column: 1, scope: !4)
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; CHECK: ![[CALL1]] = !DILocation(line: 4, column: 9, scope: ![[CALL1BLOCK:[0-9]+]])
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; CHECK: ![[CALL1BLOCK]] = !DILexicalBlockFile({{.*}} discriminator: 1)
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; CHECK: ![[CALL2]] = !DILocation(line: 4, column: 15, scope: ![[CALL2BLOCK:[0-9]+]])
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; CHECK: ![[CALL2BLOCK]] = !DILexicalBlockFile({{.*}} discriminator: 2)
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