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llvm-mirror/test/Verifier/metadata-function-dbg.ll
Adrian Prantl 05ee77f883 Make it illegal for two Functions to point to the same DISubprogram
As recently discussed on llvm-dev [1], this patch makes it illegal for
two Functions to point to the same DISubprogram and updates
FunctionCloner to also clone the debug info of a function to conform
to the new requirement. To simplify the implementation it also factors
out the creation of inlineAt locations from the Inliner into a
general-purpose utility in DILocation.

[1] http://lists.llvm.org/pipermail/llvm-dev/2017-May/112661.html
<rdar://problem/31926379>

Differential Revision: https://reviews.llvm.org/D32975

This reapplies r302469 with a fix for a bot failure (reparentDebugInfo
now checks for the case the orig and new function are identical).

llvm-svn: 302576
2017-05-09 19:47:37 +00:00

37 lines
956 B
LLVM

; RUN: not llvm-as %s -disable-output 2>&1 | FileCheck %s
; CHECK: function declaration may not have a !dbg attachment
declare !dbg !4 void @f1()
; CHECK: function must have a single !dbg attachment
define void @f2() !dbg !4 !dbg !4 {
unreachable
}
; CHECK: DISubprogram attached to more than one function
define void @f3() !dbg !4 {
unreachable
}
; CHECK: DISubprogram attached to more than one function
define void @f4() !dbg !4 {
unreachable
}
; CHECK-NOT: !dbg
; CHECK: function !dbg attachment must be a subprogram
; CHECK-NEXT: void ()* @bar
; CHECK-NEXT: !{{[0-9]+}} = !{}
define void @bar() !dbg !3 {
unreachable
}
!llvm.module.flags = !{!0}
!0 = !{i32 2, !"Debug Info Version", i32 3}
!llvm.dbg.cu = !{!1}
!1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2)
!2 = !DIFile(filename: "t.c", directory: "/path/to/dir")
!3 = !{}
!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !2, unit: !1)