llvm-6502/test/Bitcode/function-local-metadata.3.5.ll
Duncan P. N. Exon Smith 1ef70ff39b IR: Make metadata typeless in assembly
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
2014-12-15 19:07:53 +00:00

36 lines
1.2 KiB
LLVM

; RUN: llvm-dis < %s.bc | FileCheck %s
; Check that function-local metadata is dropped correctly when it's not a
; direct argument to a call instruction.
;
; Bitcode assembled by llvm-as v3.5.0.
define void @foo(i32 %v) {
; CHECK: entry:
entry:
; CHECK-NEXT: call void @llvm.bar(metadata i32 %v)
call void @llvm.bar(metadata !{i32 %v})
; Note: these supposedly legal instructions fired an assertion in llvm-as:
;
; Assertion failed: (I != ValueMap.end() && "Value not in slotcalculator!"), function getValueID, file lib/Bitcode/Writer/ValueEnumerator.cpp, line 138.
;
; So, I didn't test them; it looks like bitcode compatability is irrelevant.
; call void @llvm.bar(metadata !{i32 0, i32 %v})
; call void @llvm.bar(metadata !{i32 %v, i32 0})
; call void @llvm.bar(metadata !{metadata !{}, i32 %v})
; call void @llvm.bar(metadata !{i32 %v, metadata !{}})
; CHECK-NEXT: call void @llvm.bar(metadata !0)
; CHECK-NEXT: call void @llvm.bar(metadata !0)
call void @llvm.bar(metadata !{i32 %v, i32 %v})
call void @llvm.bar(metadata !{metadata !{i32 %v}})
; CHECK-NEXT: ret void{{$}}
ret void, !baz !{i32 %v}
}
declare void @llvm.bar(metadata)
; CHECK: !0 = !{}