144 lines
6.9 KiB
LLVM
144 lines
6.9 KiB
LLVM
; RUN: llc < %s | FileCheck --check-prefixes=CHECK %s
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; RUN: llc -O0 < %s | FileCheck --check-prefixes=CHECK %s
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; Source to regenerate:
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; $ clang -cc1 -triple x86_64-windows-msvc t.cpp -debug-info-kind=limited \
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; -gcodeview -O2 -fms-extensions -emit-llvm -o t.ll
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;
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; extern "C" struct Foo {
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; __declspec(allocator) virtual void *alloc();
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; };
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; extern "C" __declspec(allocator) Foo *alloc_foo();
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; extern "C" void use_result(void *);
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; extern "C" Foo *call_tail() {
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; return alloc_foo();
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; }
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; extern "C" int call_virtual(Foo *p) {
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; use_result(p->alloc());
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; return 0;
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; }
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; extern "C" int call_multiple() {
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; use_result(alloc_foo());
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; use_result(alloc_foo());
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; return 0;
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; }
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; ModuleID = 't.cpp'
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source_filename = "t.cpp"
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-windows-msvc"
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%struct.Foo = type { i32 (...)** }
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; Function Attrs: nounwind
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define dso_local %struct.Foo* @call_tail() local_unnamed_addr #0 !dbg !7 {
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entry:
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%call = tail call %struct.Foo* @alloc_foo() #3, !dbg !13, !heapallocsite !12
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ret %struct.Foo* %call, !dbg !13
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}
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declare dso_local %struct.Foo* @alloc_foo() local_unnamed_addr #1
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; Function Attrs: nounwind
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define dso_local i32 @call_virtual(%struct.Foo* %p) local_unnamed_addr #0 !dbg !14 {
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entry:
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call void @llvm.dbg.value(metadata %struct.Foo* %p, metadata !19, metadata !DIExpression()), !dbg !20
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%0 = bitcast %struct.Foo* %p to i8* (%struct.Foo*)***, !dbg !21
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%vtable = load i8* (%struct.Foo*)**, i8* (%struct.Foo*)*** %0, align 8, !dbg !21, !tbaa !22
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%1 = load i8* (%struct.Foo*)*, i8* (%struct.Foo*)** %vtable, align 8, !dbg !21
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%call = tail call i8* %1(%struct.Foo* %p) #3, !dbg !21, !heapallocsite !2
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tail call void @use_result(i8* %call) #3, !dbg !21
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ret i32 0, !dbg !25
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}
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declare dso_local void @use_result(i8*) local_unnamed_addr #1
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; Function Attrs: nounwind
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define dso_local i32 @call_multiple() local_unnamed_addr #0 !dbg !26 {
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entry:
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%call = tail call %struct.Foo* @alloc_foo() #3, !dbg !29, !heapallocsite !12
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%0 = bitcast %struct.Foo* %call to i8*, !dbg !29
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tail call void @use_result(i8* %0) #3, !dbg !29
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%call1 = tail call %struct.Foo* @alloc_foo() #3, !dbg !30, !heapallocsite !12
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%1 = bitcast %struct.Foo* %call1 to i8*, !dbg !30
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tail call void @use_result(i8* %1) #3, !dbg !30
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ret i32 0, !dbg !31
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}
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; Function Attrs: nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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; Don't emit metadata for tail calls.
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; CHECK-LABEL: call_tail: # @call_tail
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; CHECK: jmp alloc_foo
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; CHECK-LABEL: call_virtual: # @call_virtual
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; CHECK: callq *{{.*}}%rax{{.*}}
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; CHECK-NEXT: [[LABEL1:.Ltmp[0-9]+]]:
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; CHECK-LABEL: call_multiple: # @call_multiple
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; CHECK: callq alloc_foo
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; CHECK-NEXT: [[LABEL3:.Ltmp[0-9]+]]:
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; CHECK: callq alloc_foo
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; CHECK-NEXT: [[LABEL5:.Ltmp[0-9]+]]:
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; CHECK-LABEL: .short 4423 # Record kind: S_GPROC32_ID
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; CHECK: .short 4446 # Record kind: S_HEAPALLOCSITE
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; CHECK-NEXT: .secrel32 [[LABEL0:.Ltmp[0-9]+]]
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; CHECK-NEXT: .secidx [[LABEL0]]
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; CHECK-NEXT: .short [[LABEL1]]-[[LABEL0]]
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; CHECK-NEXT: .long 3
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; CHECK: .short 4446 # Record kind: S_HEAPALLOCSITE
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; CHECK-NEXT: .secrel32 [[LABEL2:.Ltmp[0-9]+]]
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; CHECK-NEXT: .secidx [[LABEL2]]
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; CHECK-NEXT: .short [[LABEL3]]-[[LABEL2]]
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; CHECK-NEXT: .long 4096
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; CHECK: .short 4446 # Record kind: S_HEAPALLOCSITE
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; CHECK-NEXT: .secrel32 [[LABEL4:.Ltmp[0-9]+]]
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; CHECK-NEXT: .secidx [[LABEL4]]
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; CHECK-NEXT: .short [[LABEL5]]-[[LABEL4]]
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; CHECK-NEXT: .long 4096
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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" }
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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" }
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attributes #2 = { nounwind readnone speculatable willreturn }
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attributes #3 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!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)
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!1 = !DIFile(filename: "<stdin>", directory: "/usr/local/google/home/akhuang/testing/heapallocsite", checksumkind: CSK_MD5, checksum: "e0a04508b4229fc4aee0baa364e25987")
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!2 = !{}
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!3 = !{i32 2, !"CodeView", i32 1}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 2}
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!6 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git fa686ea7650235c6dff988cc8cba49e130b3d5f8)"}
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!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)
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!8 = !DIFile(filename: "t.cpp", directory: "/usr/local/google/home/akhuang/testing/heapallocsite", checksumkind: CSK_MD5, checksum: "e0a04508b4229fc4aee0baa364e25987")
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!9 = !DISubroutineType(types: !10)
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!10 = !{!11}
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!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
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!12 = !DICompositeType(tag: DW_TAG_structure_type, name: "Foo", file: !8, line: 1, flags: DIFlagFwdDecl, identifier: ".?AUFoo@@")
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!13 = !DILocation(line: 7, scope: !7)
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!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)
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!15 = !DISubroutineType(types: !16)
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!16 = !{!17, !11}
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!17 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!18 = !{!19}
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!19 = !DILocalVariable(name: "p", arg: 1, scope: !14, file: !8, line: 9, type: !11)
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!20 = !DILocation(line: 0, scope: !14)
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!21 = !DILocation(line: 10, scope: !14)
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!22 = !{!23, !23, i64 0}
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!23 = !{!"vtable pointer", !24, i64 0}
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!24 = !{!"Simple C++ TBAA"}
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!25 = !DILocation(line: 11, scope: !14)
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!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)
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!27 = !DISubroutineType(types: !28)
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!28 = !{!17}
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!29 = !DILocation(line: 14, scope: !26)
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!30 = !DILocation(line: 15, scope: !26)
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!31 = !DILocation(line: 16, scope: !26)
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