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1ef70ff39b
Now that `Metadata` is typeless, reflect that in the assembly. These
are the matching assembly changes for the metadata/value split in
r223802.
- Only use the `metadata` type when referencing metadata from a call
intrinsic -- i.e., only when it's used as a `Value`.
- Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode`
when referencing it from call intrinsics.
So, assembly like this:
define @foo(i32 %v) {
call void @llvm.foo(metadata !{i32 %v}, metadata !0)
call void @llvm.foo(metadata !{i32 7}, metadata !0)
call void @llvm.foo(metadata !1, metadata !0)
call void @llvm.foo(metadata !3, metadata !0)
call void @llvm.foo(metadata !{metadata !3}, metadata !0)
ret void, !bar !2
}
!0 = metadata !{metadata !2}
!1 = metadata !{i32* @global}
!2 = metadata !{metadata !3}
!3 = metadata !{}
turns into this:
define @foo(i32 %v) {
call void @llvm.foo(metadata i32 %v, metadata !0)
call void @llvm.foo(metadata i32 7, metadata !0)
call void @llvm.foo(metadata i32* @global, metadata !0)
call void @llvm.foo(metadata !3, metadata !0)
call void @llvm.foo(metadata !{!3}, metadata !0)
ret void, !bar !2
}
!0 = !{!2}
!1 = !{i32* @global}
!2 = !{!3}
!3 = !{}
I wrote an upgrade script that handled almost all of the tests in llvm
and many of the tests in cfe (even handling many `CHECK` lines). I've
attached it (or will attach it in a moment if you're speedy) to PR21532
to help everyone update their out-of-tree testcases.
This is part of PR21532.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224257 91177308-0d34-0410-b5e6-96231b3b80d8
33 lines
1.0 KiB
LLVM
33 lines
1.0 KiB
LLVM
; RUN: opt -S -globalopt < %s | FileCheck %s
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; PR6112 - When globalopt does RAUW(@G, %G), the metadata reference should drop
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; to null. Function local metadata that references @G from a different function
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; to that containing %G should likewise drop to null.
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@G = internal global i8** null
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define i32 @main(i32 %argc, i8** %argv) {
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; CHECK-LABEL: @main(
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; CHECK: %G = alloca
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store i8** %argv, i8*** @G
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ret i32 0
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}
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define void @foo(i32 %x) {
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; Note: these arguments look like MDNodes, but they're really syntactic sugar
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; for 'MetadataAsValue::get(ValueAsMetadata::get(Value*))'. When @G drops to
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; null, the ValueAsMetadata instance gets replaced by metadata !{}, or
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; MDNode::get({}).
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call void @llvm.foo(metadata i8*** @G, metadata i32 %x)
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; CHECK: call void @llvm.foo(metadata ![[EMPTY:[0-9]+]], metadata i32 %x)
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ret void
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}
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declare void @llvm.foo(metadata, metadata) nounwind readnone
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!named = !{!0}
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; CHECK: !named = !{![[NULL:[0-9]+]]}
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!0 = !{i8*** @G}
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; CHECK-DAG: ![[NULL]] = !{null}
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; CHECK-DAG: ![[EMPTY]] = !{}
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