1 ; RUN: llc -stop-after=early-tailduplication < %s | FileCheck %s
3 ; Check that DebugLoc attached to the branch instruction of
4 ; 'while.cond1.preheader.lr.ph' survives after tailduplication pass.
6 ; CHECK: [[DLOC:![0-9]+]] = !DILocation(line: 9, column: 5, scope: !{{[0-9]+}})
7 ; CHECK: [[VREG:%[^ ]+]]:gr64 = COPY $rdi
8 ; CHECK: TEST64rr [[VREG]], [[VREG]]
9 ; CHECK-NEXT: JCC_1 {{.+}}, debug-location [[DLOC]]
10 ; CHECK-NEXT: JMP_1 {{.+}}, debug-location [[DLOC]]
12 target triple = "x86_64-unknown-linux-gnu"
14 %struct.Node = type { ptr }
16 define i32 @foo(ptr readonly %node, ptr readnone %root) !dbg !6 {
18 %cmp = icmp eq ptr %node, %root, !dbg !8
19 br i1 %cmp, label %while.end4, label %while.cond1.preheader.lr.ph, !dbg !10
21 while.cond1.preheader.lr.ph: ; preds = %entry
22 %tobool = icmp eq ptr %node, null
23 br i1 %tobool, label %while.cond1.preheader.us.preheader, label %while.body2.preheader, !dbg !11
25 while.body2.preheader: ; preds = %while.cond1.preheader.lr.ph
26 br label %while.body2, !dbg !11
28 while.cond1.preheader.us.preheader: ; preds = %while.cond1.preheader.lr.ph
29 br label %while.cond1.preheader.us, !dbg !10
31 while.cond1.preheader.us: ; preds = %while.cond1.preheader.us.preheader, %while.cond1.preheader.us
32 br label %while.cond1.preheader.us, !dbg !10
34 while.body2: ; preds = %while.body2.preheader, %while.body2
35 br label %while.body2, !dbg !11
37 while.end4: ; preds = %entry
42 !llvm.module.flags = !{!3, !4}
44 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, emissionKind: LineTablesOnly)
45 !1 = !DIFile(filename: "foo.c", directory: "b/")
47 !3 = !{i32 2, !"Dwarf Version", i32 4}
48 !4 = !{i32 2, !"Debug Info Version", i32 3}
50 !6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 5, type: !7, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
51 !7 = !DISubroutineType(types: !2)
52 !8 = !DILocation(line: 7, column: 15, scope: !9)
53 !9 = !DILexicalBlockFile(scope: !6, file: !1, discriminator: 2)
54 !10 = !DILocation(line: 7, column: 3, scope: !9)
55 !11 = !DILocation(line: 9, column: 5, scope: !9)
56 !12 = !DILocation(line: 14, column: 3, scope: !6)