1 ; RUN: opt -hotcoldsplit -hotcoldsplit-threshold=0 -S < %s | FileCheck %s
3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
4 target triple = "x86_64-apple-macosx10.14.0"
6 ; The block "if.end" in @foo is extracted into a new function, @foo.cold.1.
9 ; CHECK-LABEL: define {{.*}}@foo.cold.1
11 ; - The llvm.dbg.value intrinsic pointing to an argument in @foo (%arg1) is
13 ; CHECK-NOT: llvm.dbg.value
15 ; - Instructions without locations in the original function have no
16 ; location in the new function
17 ; CHECK: [[ADD1:%.*]] = add i32 %{{.*}}, 1{{$}}
19 ; - Ditto (see above), calls are not special
20 ; CHECK-NEXT: call void @sink(i32 [[ADD1]])
22 ; - Line locations are preserved
23 ; CHECK-NEXT: call void @sink(i32 [[ADD1]]), !dbg [[LINE1:![0-9]+]]
25 ; - llvm.dbg.value intrinsics for values local to @foo.cold.1 are preserved
26 ; CHECK-NEXT: llvm.dbg.value(metadata i32 [[ADD1]], metadata [[VAR1:![0-9]+]], metadata !DIExpression()), !dbg [[LINE1]]
28 ; - Expressions inside of dbg.value intrinsics are preserved
29 ; CHECK-NEXT: llvm.dbg.value(metadata i32 [[ADD1]], metadata [[VAR1]], metadata !DIExpression(DW_OP_constu, 1, DW_OP_plus, DW_OP_stack_value)
31 ; - The DISubprogram for @foo.cold.1 has an empty DISubroutineType
32 ; CHECK: [[FILE:![0-9]+]] = !DIFile(filename: "<stdin>"
33 ; CHECK: [[EMPTY_MD:![0-9]+]] = !{}
34 ; CHECK: [[EMPTY_TYPE:![0-9]+]] = !DISubroutineType(types: [[EMPTY_MD]])
35 ; CHECK: [[NEWSCOPE:![0-9]+]] = distinct !DISubprogram(name: "foo.cold.1", linkageName: "foo.cold.1", scope: null, file: [[FILE]], type: [[EMPTY_TYPE]], spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized
37 ; - Line locations in @foo.cold.1 point to the new scope for @foo.cold.1
38 ; CHECK: [[LINE1]] = !DILocation(line: 1, column: 1, scope: [[NEWSCOPE]])
40 define void @foo(i32 %arg1) !dbg !6 {
42 %var = add i32 0, 0, !dbg !11
43 br i1 undef, label %if.then, label %if.end
45 if.then: ; preds = %entry
48 if.end: ; preds = %entry
49 call void @llvm.dbg.value(metadata i32 %arg1, metadata !9, metadata !DIExpression()), !dbg !11
50 %add1 = add i32 %arg1, 1
51 call void @sink(i32 %add1)
52 call void @sink(i32 %add1), !dbg !11
53 call void @llvm.dbg.value(metadata i32 %add1, metadata !9, metadata !DIExpression()), !dbg !11
54 call void @llvm.dbg.value(metadata i32 %add1, metadata !9, metadata !DIExpression(DW_OP_constu, 1, DW_OP_plus, DW_OP_stack_value)), !dbg !11
58 declare void @llvm.dbg.value(metadata, metadata, metadata)
60 declare void @sink(i32) cold
63 !llvm.debugify = !{!3, !4}
64 !llvm.module.flags = !{!5}
66 !0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
67 !1 = !DIFile(filename: "<stdin>", directory: "/")
71 !5 = !{i32 2, !"Debug Info Version", i32 3}
72 !6 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: null, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !8)
73 !7 = !DISubroutineType(types: !2)
75 !9 = !DILocalVariable(name: "1", scope: !6, file: !1, line: 1, type: !10)
76 !10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
77 !11 = !DILocation(line: 1, column: 1, scope: !6)