1 ; RUN: llc %s -o - -start-after=codegenprepare -stop-before=finalize-isel \
2 ; RUN: -mtriple=x86_64-unknown-unknown -experimental-debug-variable-locations \
5 ; Test for a crash / weird behaviour when llvm.frameaddress.* is called.
6 ; Today, as a concession, we emit a DBG_PHI allowing the frame register value
7 ; to be read, but it could be expressed in other ways. Check that this works
8 ; outside of the entry block, to avoid the frame register being recognised
9 ; as def'd by frame-setup code or as a function argument.
11 ; CHECK-LABEL: bb.1.notentry:
14 declare void @llvm.dbg.value(metadata, metadata, metadata)
15 declare i8 *@llvm.frameaddress.p0i8(i32)
17 ; Function Attrs: mustprogress nofree nosync nounwind sspstrong uwtable
18 define hidden i8 * @foo() !dbg !7 {
23 %0 = tail call i8* @llvm.frameaddress.p0i8(i32 0), !dbg !12
24 call void @llvm.dbg.value(metadata i8* %0, metadata !11, metadata !DIExpression()), !dbg !12
29 !llvm.module.flags = !{!3, !4, !5, !6}
30 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
31 !1 = !DIFile(filename: "foo.cpp", directory: ".")
32 !2 = !DIBasicType(name: "int", size: 8, encoding: DW_ATE_signed)
33 !3 = !{i32 2, !"Dwarf Version", i32 4}
34 !4 = !{i32 2, !"Debug Info Version", i32 3}
35 !5 = !{i32 1, !"wchar_size", i32 2}
36 !6 = !{i32 7, !"PIC Level", i32 2}
37 !7 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: !1, file: !1, line: 6, type: !8, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
38 !8 = !DISubroutineType(types: !9)
41 !11 = !DILocalVariable(name: "baz", scope: !7, file: !1, line: 7, type: !2)
42 !12 = !DILocation(line: 10, scope: !7)