llvm-mirror/test/Linker/mdlocation.ll
Duncan P. N. Exon Smith 0c1aee0b16 DI: Require subprogram definitions to be distinct
As a follow-up to r246098, require `DISubprogram` definitions
(`isDefinition: true`) to be 'distinct'.  Specifically, add an assembler
check, a verifier check, and bitcode upgrading logic to combat testcase
bitrot after the `DIBuilder` change.

While working on the testcases, I realized that
test/Linker/subprogram-linkonce-weak-odr.ll isn't relevant anymore.  Its
purpose was to check for a corner case in PR22792 where two subprogram
definitions match exactly and share the same metadata node.  The new
verifier check, requiring that subprogram definitions are 'distinct',
precludes that possibility.

I updated almost all the IR with the following script:

    git grep -l -E -e '= !DISubprogram\(.* isDefinition: true' |
    grep -v test/Bitcode |
    xargs sed -i '' -e 's/= \(!DISubprogram(.*, isDefinition: true\)/= distinct \1/'

Likely some variant of would work for out-of-tree testcases.

llvm-svn: 246327
2015-08-28 20:26:49 +00:00

27 lines
1.4 KiB
LLVM

; RUN: llvm-link %s %S/Inputs/mdlocation.ll -o - -S | FileCheck %s
; Test that DILocations are remapped properly.
; CHECK: !named = !{!0, !1, !2, !3, !4, !5, !6, !7, !8, !9, !10, !11}
!named = !{!0, !1, !2, !3, !4, !5}
; CHECK: !0 = distinct !DISubprogram(
; CHECK-NEXT: !1 = !DILocation(line: 3, column: 7, scope: !0)
; CHECK-NEXT: !2 = !DILocation(line: 3, column: 7, scope: !0, inlinedAt: !1)
; CHECK-NEXT: !3 = !DILocation(line: 3, column: 7, scope: !0, inlinedAt: !2)
; CHECK-NEXT: !4 = distinct !DILocation(line: 3, column: 7, scope: !0)
; CHECK-NEXT: !5 = distinct !DILocation(line: 3, column: 7, scope: !0, inlinedAt: !4)
; CHECK-NEXT: !6 = distinct !DISubprogram(
; CHECK-NEXT: !7 = !DILocation(line: 3, column: 7, scope: !6)
; CHECK-NEXT: !8 = !DILocation(line: 3, column: 7, scope: !6, inlinedAt: !7)
; CHECK-NEXT: !9 = !DILocation(line: 3, column: 7, scope: !6, inlinedAt: !8)
; CHECK-NEXT: !10 = distinct !DILocation(line: 3, column: 7, scope: !6)
; CHECK-NEXT: !11 = distinct !DILocation(line: 3, column: 7, scope: !6, inlinedAt: !10)
!0 = distinct !DISubprogram() ; Use this as a scope.
!1 = !DILocation(line: 3, column: 7, scope: !0)
!2 = !DILocation(line: 3, column: 7, scope: !0, inlinedAt: !1)
!3 = !DILocation(line: 3, column: 7, scope: !0, inlinedAt: !2)
; Test distinct nodes.
!4 = distinct !DILocation(line: 3, column: 7, scope: !0)
!5 = distinct !DILocation(line: 3, column: 7, scope: !0, inlinedAt: !4)