33 lines
1.0 KiB
LLVM
33 lines
1.0 KiB
LLVM
; RUN: opt -S -globalopt < %s | FileCheck %s
|
|
|
|
; PR6112 - When globalopt does RAUW(@G, %G), the metadata reference should drop
|
|
; to null. Function local metadata that references @G from a different function
|
|
; to that containing %G should likewise drop to null.
|
|
@G = internal global i8** null
|
|
|
|
define i32 @main(i32 %argc, i8** %argv) norecurse {
|
|
; CHECK-LABEL: @main(
|
|
; CHECK: %G = alloca
|
|
store i8** %argv, i8*** @G
|
|
ret i32 0
|
|
}
|
|
|
|
define void @foo(i32 %x) {
|
|
; Note: these arguments look like MDNodes, but they're really syntactic sugar
|
|
; for 'MetadataAsValue::get(ValueAsMetadata::get(Value*))'. When @G drops to
|
|
; null, the ValueAsMetadata instance gets replaced by metadata !{}, or
|
|
; MDNode::get({}).
|
|
call void @llvm.foo(metadata i8*** @G, metadata i32 %x)
|
|
; CHECK: call void @llvm.foo(metadata ![[EMPTY:[0-9]+]], metadata i32 %x)
|
|
ret void
|
|
}
|
|
|
|
declare void @llvm.foo(metadata, metadata) nounwind readnone
|
|
|
|
!named = !{!0}
|
|
; CHECK: !named = !{![[NULL:[0-9]+]]}
|
|
|
|
!0 = !{i8*** @G}
|
|
; CHECK-DAG: ![[NULL]] = !{null}
|
|
; CHECK-DAG: ![[EMPTY]] = !{}
|