llvm-6502/test/Verifier/llvm.dbg.intrinsic-dbg-attachment.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

62 lines
2.3 KiB
LLVM

; RUN: not llvm-as -disable-output <%s 2>&1 | FileCheck %s
define void @foo() {
entry:
call void @llvm.dbg.value(
metadata i8* undef,
i64 0,
metadata !MDLocalVariable(tag: DW_TAG_arg_variable, scope: !1),
metadata !MDExpression())
; CHECK-LABEL: llvm.dbg.value intrinsic requires a !dbg attachment
; CHECK-NEXT: call void @llvm.dbg.value({{.*}})
; CHECK-NEXT: label %entry
; CHECK-NEXT: void ()* @foo
call void @llvm.dbg.declare(
metadata i8* undef,
metadata !MDLocalVariable(tag: DW_TAG_arg_variable, scope: !1),
metadata !MDExpression())
; CHECK-LABEL: llvm.dbg.declare intrinsic requires a !dbg attachment
; CHECK-NEXT: call void @llvm.dbg.declare({{.*}})
; CHECK-NEXT: label %entry
; CHECK-NEXT: void ()* @foo
call void @llvm.dbg.value(
metadata i8* undef,
i64 0,
metadata !MDLocalVariable(tag: DW_TAG_arg_variable, scope: !1),
metadata !MDExpression()),
!dbg !MDLocation(scope: !2)
; CHECK-LABEL: mismatched subprogram between llvm.dbg.value variable and !dbg attachment
; CHECK-NEXT: call void @llvm.dbg.value({{[^,]+, [^,]+}}, metadata ![[VAR:[0-9]+]], {{[^,]+}}), !dbg ![[LOC:[0-9]+]]
; CHECK-NEXT: label %entry
; CHECK-NEXT: void ()* @foo
; CHECK-NEXT: ![[VAR]] = !MDLocalVariable({{.*}}scope: ![[VARSP:[0-9]+]]
; CHECK-NEXT: ![[VARSP]] = !MDSubprogram(
; CHECK-NEXT: ![[LOC]] = !MDLocation({{.*}}scope: ![[LOCSP:[0-9]+]]
; CHECK-NEXT: ![[LOCSP]] = !MDSubprogram(
call void @llvm.dbg.declare(
metadata i8* undef,
metadata !MDLocalVariable(tag: DW_TAG_arg_variable, scope: !1),
metadata !MDExpression()),
!dbg !MDLocation(scope: !2)
; CHECK-LABEL: mismatched subprogram between llvm.dbg.declare variable and !dbg attachment
; CHECK-NEXT: call void @llvm.dbg.declare({{[^,]+}}, metadata ![[VAR:[0-9]+]], {{.*[^,]+}}), !dbg ![[LOC:[0-9]+]]
; CHECK-NEXT: label %entry
; CHECK-NEXT: void ()* @foo
; CHECK-NEXT: ![[VAR]] = !MDLocalVariable({{.*}}scope: ![[VARSP:[0-9]+]]
; CHECK-NEXT: ![[VARSP]] = !MDSubprogram(
; CHECK-NEXT: ![[LOC]] = !MDLocation({{.*}}scope: ![[LOCSP:[0-9]+]]
; CHECK-NEXT: ![[LOCSP]] = !MDSubprogram(
ret void
}
declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
declare void @llvm.dbg.declare(metadata, metadata, metadata)
!llvm.module.flags = !{!0}
!0 = !{i32 2, !"Debug Info Version", i32 3}
!1 = !MDSubprogram(name: "foo")
!2 = !MDSubprogram(name: "bar")