1 ; RUN: llc < %s | FileCheck --check-prefixes=DAG,CHECK %s
2 ; RUN: llc -O0 < %s | FileCheck --check-prefixes=FAST,CHECK %s
4 ; Source to regenerate:
5 ; $ clang -cc1 -triple x86_64-windows-msvc t.cpp -debug-info-kind=limited \
6 ; -gcodeview -O2 -fms-extensions -emit-llvm -o t.ll
8 ; extern "C" struct Foo {
9 ; __declspec(allocator) virtual void *alloc();
11 ; extern "C" __declspec(allocator) Foo *alloc_foo();
12 ; extern "C" void use_result(void *);
13 ; extern "C" Foo *call_tail() {
16 ; extern "C" int call_virtual(Foo *p) {
17 ; use_result(p->alloc());
20 ; extern "C" int call_multiple() {
21 ; use_result(alloc_foo());
22 ; use_result(alloc_foo());
27 source_filename = "t.cpp"
28 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
29 target triple = "x86_64-unknown-windows-msvc"
31 %struct.Foo = type { i32 (...)** }
33 ; Function Attrs: nounwind
34 define dso_local %struct.Foo* @call_tail() local_unnamed_addr #0 !dbg !7 {
36 %call = tail call %struct.Foo* @alloc_foo() #3, !dbg !13, !heapallocsite !12
37 ret %struct.Foo* %call, !dbg !13
40 declare dso_local %struct.Foo* @alloc_foo() local_unnamed_addr #1
42 ; Function Attrs: nounwind
43 define dso_local i32 @call_virtual(%struct.Foo* %p) local_unnamed_addr #0 !dbg !14 {
45 call void @llvm.dbg.value(metadata %struct.Foo* %p, metadata !19, metadata !DIExpression()), !dbg !20
46 %0 = bitcast %struct.Foo* %p to i8* (%struct.Foo*)***, !dbg !21
47 %vtable = load i8* (%struct.Foo*)**, i8* (%struct.Foo*)*** %0, align 8, !dbg !21, !tbaa !22
48 %1 = load i8* (%struct.Foo*)*, i8* (%struct.Foo*)** %vtable, align 8, !dbg !21
49 %call = tail call i8* %1(%struct.Foo* %p) #3, !dbg !21, !heapallocsite !2
50 tail call void @use_result(i8* %call) #3, !dbg !21
54 declare dso_local void @use_result(i8*) local_unnamed_addr #1
56 ; Function Attrs: nounwind
57 define dso_local i32 @call_multiple() local_unnamed_addr #0 !dbg !26 {
59 %call = tail call %struct.Foo* @alloc_foo() #3, !dbg !29, !heapallocsite !12
60 %0 = bitcast %struct.Foo* %call to i8*, !dbg !29
61 tail call void @use_result(i8* %0) #3, !dbg !29
62 %call1 = tail call %struct.Foo* @alloc_foo() #3, !dbg !30, !heapallocsite !12
63 %1 = bitcast %struct.Foo* %call1 to i8*, !dbg !30
64 tail call void @use_result(i8* %1) #3, !dbg !30
68 ; Function Attrs: nounwind readnone speculatable willreturn
69 declare void @llvm.dbg.value(metadata, metadata, metadata) #2
72 ; Don't emit metadata for tail calls.
73 ; CHECK-LABEL: call_tail: # @call_tail
74 ; CHECK-NOT: .Lheapallocsite
75 ; CHECK: jmp alloc_foo
77 ; CHECK-LABEL: call_virtual: # @call_virtual
78 ; CHECK: .Lheapallocsite0:
79 ; CHECK: callq *{{.*}}%rax{{.*}}
80 ; CHECK: .Lheapallocsite1:
82 ; CHECK-LABEL: call_multiple: # @call_multiple
83 ; FastISel emits instructions in a different order.
84 ; DAG: .Lheapallocsite2:
85 ; FAST: .Lheapallocsite4:
86 ; CHECK: callq alloc_foo
87 ; DAG: .Lheapallocsite3:
88 ; FAST: .Lheapallocsite5:
89 ; DAG: .Lheapallocsite4:
90 ; FAST: .Lheapallocsite2:
91 ; CHECK: callq alloc_foo
92 ; DAG: .Lheapallocsite5:
93 ; FAST: .Lheapallocsite3:
95 ; CHECK-LABEL: .short 4423 # Record kind: S_GPROC32_ID
96 ; CHECK: .short 4446 # Record kind: S_HEAPALLOCSITE
97 ; CHECK-NEXT: .secrel32 .Lheapallocsite0
98 ; CHECK-NEXT: .secidx .Lheapallocsite0
99 ; CHECK-NEXT: .short .Lheapallocsite1-.Lheapallocsite0
100 ; CHECK-NEXT: .long 3
101 ; CHECK: .short 4446 # Record kind: S_HEAPALLOCSITE
102 ; CHECK-NEXT: .secrel32 .Lheapallocsite2
103 ; CHECK-NEXT: .secidx .Lheapallocsite2
104 ; CHECK-NEXT: .short .Lheapallocsite3-.Lheapallocsite2
105 ; CHECK-NEXT: .long 4096
106 ; CHECK: .short 4446 # Record kind: S_HEAPALLOCSITE
107 ; CHECK-NEXT: .secrel32 .Lheapallocsite4
108 ; CHECK-NEXT: .secidx .Lheapallocsite4
109 ; CHECK-NEXT: .short .Lheapallocsite5-.Lheapallocsite4
110 ; CHECK-NEXT: .long 4096
112 attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+cx8,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
113 attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+cx8,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
114 attributes #2 = { nounwind readnone speculatable willreturn }
115 attributes #3 = { nounwind }
118 !llvm.module.flags = !{!3, !4, !5}
121 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 10.0.0 (https://github.com/llvm/llvm-project.git fa686ea7650235c6dff988cc8cba49e130b3d5f8)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
122 !1 = !DIFile(filename: "<stdin>", directory: "/usr/local/google/home/akhuang/testing/heapallocsite", checksumkind: CSK_MD5, checksum: "e0a04508b4229fc4aee0baa364e25987")
124 !3 = !{i32 2, !"CodeView", i32 1}
125 !4 = !{i32 2, !"Debug Info Version", i32 3}
126 !5 = !{i32 1, !"wchar_size", i32 2}
127 !6 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git fa686ea7650235c6dff988cc8cba49e130b3d5f8)"}
128 !7 = distinct !DISubprogram(name: "call_tail", scope: !8, file: !8, line: 6, type: !9, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
129 !8 = !DIFile(filename: "t.cpp", directory: "/usr/local/google/home/akhuang/testing/heapallocsite", checksumkind: CSK_MD5, checksum: "e0a04508b4229fc4aee0baa364e25987")
130 !9 = !DISubroutineType(types: !10)
132 !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
133 !12 = !DICompositeType(tag: DW_TAG_structure_type, name: "Foo", file: !8, line: 1, flags: DIFlagFwdDecl, identifier: ".?AUFoo@@")
134 !13 = !DILocation(line: 7, scope: !7)
135 !14 = distinct !DISubprogram(name: "call_virtual", scope: !8, file: !8, line: 9, type: !15, scopeLine: 9, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !18)
136 !15 = !DISubroutineType(types: !16)
138 !17 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
140 !19 = !DILocalVariable(name: "p", arg: 1, scope: !14, file: !8, line: 9, type: !11)
141 !20 = !DILocation(line: 0, scope: !14)
142 !21 = !DILocation(line: 10, scope: !14)
143 !22 = !{!23, !23, i64 0}
144 !23 = !{!"vtable pointer", !24, i64 0}
145 !24 = !{!"Simple C++ TBAA"}
146 !25 = !DILocation(line: 11, scope: !14)
147 !26 = distinct !DISubprogram(name: "call_multiple", scope: !8, file: !8, line: 13, type: !27, scopeLine: 13, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
148 !27 = !DISubroutineType(types: !28)
150 !29 = !DILocation(line: 14, scope: !26)
151 !30 = !DILocation(line: 15, scope: !26)
152 !31 = !DILocation(line: 16, scope: !26)