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llvm-project/llvm/test/DebugInfo/COFF/fp-stack.ll

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[CodeView] Describe variables live in x87 registers We didn't have a mapping from LLVM's x87 floating point registers to CodeView's encoding. llvm-svn: 261730
2016-02-24 18:01:24 +08:00
; RUN: llc -mtriple=i686-windows-msvc < %s | FileCheck %s --check-prefix=ASM
; RUN: llc -mtriple=i686-windows-msvc < %s -filetype=obj | llvm-readobj -codeview - | FileCheck %s --check-prefix=OBJ
target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
target triple = "i686-pc-windows-msvc18.0.0"
define double @f(double %p1) !dbg !4 {
entry:
%sub = fsub double -0.000000e+00, %p1, !dbg !16
tail call void @llvm.dbg.value(metadata double %sub, i64 0, metadata !10, metadata !14), !dbg !15
ret double %sub
}
; ASM: .cv_def_range Lfunc_begin0 Lfunc_end0, "A\021\200\000\000\000"
; OBJ: DefRangeRegister {
; OBJ: Register: 128
; OBJ: MayHaveNoName: 0
; OBJ: LocalVariableAddrRange {
; OBJ: OffsetStart: .text+0x0
; OBJ: ISectStart: 0x0
; OBJ: Range: 0x7
; OBJ: }
; OBJ: }
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!11, !12}
!llvm.ident = !{!13}
[PR27284] Reverse the ownership between DICompileUnit and DISubprogram. Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> llvm-svn: 266446
2016-04-15 23:57:41 +08:00
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 261537) (llvm/trunk 261463)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
[CodeView] Describe variables live in x87 registers We didn't have a mapping from LLVM's x87 floating point registers to CodeView's encoding. llvm-svn: 261730
2016-02-24 18:01:24 +08:00
!1 = !DIFile(filename: "<stdin>", directory: "/")
!2 = !{}
[PR27284] Reverse the ownership between DICompileUnit and DISubprogram. Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> llvm-svn: 266446
2016-04-15 23:57:41 +08:00
!4 = distinct !DISubprogram(name: "f", linkageName: "f", scope: !5, file: !5, line: 2, type: !6, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !9)
[CodeView] Describe variables live in x87 registers We didn't have a mapping from LLVM's x87 floating point registers to CodeView's encoding. llvm-svn: 261730
2016-02-24 18:01:24 +08:00
!5 = !DIFile(filename: "t.ii", directory: "/")
!6 = !DISubroutineType(types: !7)
!7 = !{null, !8}
!8 = !DIBasicType(name: "double", size: 64, align: 64, encoding: DW_ATE_float)
!9 = !{!10}
!10 = !DILocalVariable(name: "p1", arg: 1, scope: !4, file: !5, line: 2, type: !8)
!11 = !{i32 2, !"CodeView", i32 1}
!12 = !{i32 2, !"Debug Info Version", i32 3}
!13 = !{!"clang version 3.9.0 (trunk 261537) (llvm/trunk 261463)"}
!14 = !DIExpression()
!15 = !DILocation(line: 2, scope: !4)
!16 = !DILocation(line: 3, scope: !4)