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llvm-mirror/test/Assembler/distinct-mdnode.ll
Duncan P. N. Exon Smith bc9ee9160a IR: Add 'distinct' MDNodes to bitcode and assembly
Propagate whether `MDNode`s are 'distinct' through the other types of IR
(assembly and bitcode).  This adds the `distinct` keyword to assembly.

Currently, no one actually calls `MDNode::getDistinct()`, so these nodes
only get created for:

  - self-references, which are never uniqued, and
  - nodes whose operands are replaced that hit a uniquing collision.

The concept of distinct nodes is still not quite first-class, since
distinct-ness doesn't yet survive across `MapMetadata()`.

Part of PR22111.

llvm-svn: 225474
2015-01-08 22:38:29 +00:00

29 lines
757 B
LLVM

; RUN: llvm-as < %s | llvm-dis | FileCheck %s
; RUN: verify-uselistorder %s
!named = !{!0, !1, !2, !3, !4, !5, !6, !7, !8, !9, !10}
!0 = !{}
!1 = !{} ; This should merge with !0.
!2 = !{!0}
!3 = !{!0} ; This should merge with !2.
!4 = distinct !{}
!5 = distinct !{}
!6 = distinct !{!0}
!7 = distinct !{!0}
!8 = distinct !{!8}
!9 = distinct !{!9}
!10 = !{!10} ; This should become distinct.
; CHECK: !named = !{!0, !0, !1, !1, !2, !3, !4, !5, !6, !7, !8}
; CHECK: !0 = !{}
; CHECK-NEXT: !1 = !{!0}
; CHECK-NEXT: !2 = distinct !{}
; CHECK-NEXT: !3 = distinct !{}
; CHECK-NEXT: !4 = distinct !{!0}
; CHECK-NEXT: !5 = distinct !{!0}
; CHECK-NEXT: !6 = distinct !{!6}
; CHECK-NEXT: !7 = distinct !{!7}
; CHECK-NEXT: !8 = distinct !{!8}
; CHECK-NOT: !