llvm-6502/test/Verifier/llvm.dbg.value-expression.ll
Duncan P. N. Exon Smith 94255c8eb0 Verifier: Check that @llvm.dbg.* intrinsics have a !dbg attachment
Before we start to rely on valid `!dbg` attachments, add a check to the
verifier that `@llvm.dbg.*` intrinsics always have one.  Also check that
the `scope:` fields point at the same `MDSubprogram`.

This is in the context of PR22778.  The check that the `inlinedAt:`
fields agree has baked for a while (since r234021), so I'll kill [1] the
`MDLocalVariable::getInlinedAt()` field soon.

[1]: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20150330/269387.html

Unfortunately, that means it's impossible to keep the current `Verifier`
checks, which rely on comparing `inlinedAt:` fields.  We'll be able to
keep the checks I'm adding here.

If this breaks your out-of-tree testcases, the upgrade script
(add-dbg-to-intrinsics.sh) attached to PR22778 that I used for r235040
might fix them for you.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235048 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-15 22:15:46 +00:00

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LLVM

; RUN: not llvm-as -disable-output <%s 2>&1 | FileCheck %s
; CHECK: invalid llvm.dbg.value intrinsic expression
; CHECK-NEXT: call void @llvm.dbg.value({{.*}})
; CHECK-NEXT: !""
define void @foo(i32 %a) {
entry:
%s = alloca i32
call void @llvm.dbg.value(metadata i32* %s, i64 0, metadata !MDLocalVariable(tag: DW_TAG_arg_variable, scope: !1), metadata !""), !dbg !MDLocation(scope: !1)
ret void
}
declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
!llvm.module.flags = !{!0}
!0 = !{i32 2, !"Debug Info Version", i32 3}
!1 = !MDSubprogram()