forked from OSchip/llvm-project
35 lines
1.2 KiB
LLVM
35 lines
1.2 KiB
LLVM
|
; RUN: llvm-as <%s | llvm-bcanalyzer -dump | FileCheck %s
|
||
|
|
; Check that nodes are emitted in post-order to minimize the need for temporary
|
||
|
|
; nodes. The graph structure is designed to foil naive implementations of
|
||
|
|
; iteratitive post-order traersals: the leaves, !3 and !4, are reachable from
|
||
|
|
; the entry node, !6, as well as from !5. There is one leaf on either side to
|
||
|
|
; be sure it tickles bugs whether operands are visited forward or reverse.
|
||
|
|
|
||
|
|
; Nodes in this testcase are numbered to match how they are referenced in
|
||
|
|
; bitcode. !3 is referenced as opN=3.
|
||
|
|
|
||
|
|
; We don't care about the order of the strings (or of !3 and !4). Let's just
|
||
|
|
; make sure the strings are first and make it clear that there are two of them.
|
||
|
|
; CHECK: <STRINGS {{.*}} num-strings = 2 {
|
||
|
|
; CHECK-NEXT: 'leaf
|
||
|
|
; CHECK-NEXT: 'leaf
|
||
|
|
; CHECK-NEXT: }
|
||
|
|
|
||
|
|
; The leafs should come first (in either order).
|
||
|
|
; CHECK-NEXT: <NODE op0=1/>
|
||
|
|
; CHECK-NEXT: <NODE op0=2/>
|
||
|
|
!3 = !{!"leaf3"}
|
||
|
|
!4 = !{!"leaf4"}
|
||
|
|
|
||
|
|
; CHECK-NEXT: <NODE op0=3 op1=4/>
|
||
|
|
!5 = !{!3, !4}
|
||
|
|
|
||
|
|
; CHECK-NEXT: <NODE op0=3 op1=5 op2=4/>
|
||
|
|
!6 = !{!3, !5, !4}
|
||
|
|
|
||
|
|
; Note: named metadata nodes are not cannot reference null so their operands
|
||
|
|
; are numbered off-by-one.
|
||
|
|
; CHECK-NEXT: <NAME
|
||
|
|
; CHECK-NEXT: <NAMED_NODE op0=5/>
|
||
|
|
!named = !{!6}
|