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Verifier: Verify that each inlinable callsite of a debug-info-bearing function

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in a debug-info-bearing function has a debug location attached to it. Failure to
do so causes an "!dbg attachment points at wrong subprogram for function"
assertion failure when the inliner sets up inline scope info.

rdar://problem/25878916

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267320 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adrian Prantl 2016-04-24 03:23:02 +00:00
parent 65562d6474
commit 522b700b9b
4 changed files with 75 additions and 2 deletions
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9
lib/IR/Verifier.cpp
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@ -2579,6 +2579,15 @@ void Verifier::verifyCallSite(CallSite CS) {
}
}
// Verify that each inlinable callsite of a debug-info-bearing function in a
// debug-info-bearing function has a debug location attached to it. Failure to
// do so causes assertion failures when the inliner sets up inline scope info.
if (I->getFunction()->getSubprogram() && CS.getCalledFunction() &&
CS.getCalledFunction()->getSubprogram())
Assert(I->getDebugLoc(), "inlinable function call in a function with debug "
"info must have a !dbg location",
I);
visitInstruction(*I);
}

3
test/DebugInfo/X86/arange-and-stub.ll
View File

@ -18,7 +18,7 @@ define void @foo() !dbg !4 {
define void @bar() personality i8* bitcast (void ()* @foo to i8*) !dbg !9 {
invoke void @foo()
to label %invoke.cont unwind label %lpad
to label %invoke.cont unwind label %lpad, !dbg !19
invoke.cont: ; preds = %0
ret void
@ -50,3 +50,4 @@ lpad: ; preds = %0
!16 = !DISubrange(count: 1)
!17 = !{i32 2, !"Dwarf Version", i32 4}
!18 = !{i32 2, !"Debug Info Version", i32 3}
!19 = !DILocation(line: 0, scope: !9)

3
test/DebugInfo/X86/dbg-declare-arg.ll
View File

@ -54,7 +54,7 @@ entry:
store %class.A* %this, %class.A** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.A** %this.addr, metadata !43, metadata !DIExpression()), !dbg !44
%this1 = load %class.A*, %class.A** %this.addr
call void @_ZN1AD2Ev(%class.A* %this1)
call void @_ZN1AD2Ev(%class.A* %this1), !dbg !53
ret void, !dbg !45
}
@ -124,3 +124,4 @@ entry:
!49 = distinct !DILexicalBlock(line: 2, column: 52, file: !51, scope: !25)
!51 = !DIFile(filename: "a.cc", directory: "/private/tmp")
!52 = !{i32 1, !"Debug Info Version", i32 3}
!53 = !DILocation(line: 0, scope: !22)

62
test/Verifier/callsite-dbgloc.ll Normal file
View File

@ -0,0 +1,62 @@
; RUN: not llvm-as %s -o %t 2>&1 | FileCheck %s
; Created and then edited from
; extern void i();
; void h() { i(); }
; void g() { h(); }
; void f() { g(); }
;
; Compiling this with inlining runs into the
; "!dbg attachment points at wrong subprogram for function"
; assertion.
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx"
; Function Attrs: nounwind ssp uwtable
define void @h() #0 !dbg !7 {
entry:
call void (...) @i(), !dbg !9
ret void, !dbg !10
}
declare void @i(...) #1
; Function Attrs: nounwind ssp uwtable
define void @g() #0 !dbg !11 {
entry:
; Manually removed !dbg.
; CHECK: inlinable function call in a function with debug info must have a !dbg location
call void @h()
ret void, !dbg !13
}
; Function Attrs: nounwind ssp uwtable
define void @f() #0 !dbg !14 {
entry:
call void @g(), !dbg !15
ret void, !dbg !16
}
attributes #0 = { nounwind ssp uwtable }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5}
!llvm.ident = !{!6}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 267186)", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2)
!1 = !DIFile(filename: "test.c", directory: "/Volumes/Data/llvm")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 2}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"PIC Level", i32 2}
!6 = !{!"clang version 3.9.0 (trunk 267186)"}
!7 = distinct !DISubprogram(name: "h", scope: !1, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, unit: !0, variables: !2)
!8 = !DISubroutineType(types: !2)
!9 = !DILocation(line: 2, column: 12, scope: !7)
!10 = !DILocation(line: 2, column: 17, scope: !7)
!11 = distinct !DISubprogram(name: "g", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: false, unit: !0, variables: !2)
!12 = !DILocation(line: 3, column: 12, scope: !11)
!13 = !DILocation(line: 3, column: 17, scope: !11)
!14 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 4, type: !8, isLocal: false, isDefinition: true, scopeLine: 4, isOptimized: false, unit: !0, variables: !2)
!15 = !DILocation(line: 4, column: 12, scope: !14)
!16 = !DILocation(line: 4, column: 17, scope: !14)