;; Tests callsite context graph generation for call graph containing indirect
;; calls. Currently this should result in conservative behavior, such that the
;; indirect call receives a null call in its graph node, to prevent subsequent
;; cloning. Also tests graph and IR cloning.
;;
;; Original code looks like:
;;
;; char *foo() {
;; return new char[10];
;; }
;; class A {
;; public:
;; virtual char *x() { return foo(); }
;; };
;; class B : public A {
;; public:
;; char *x() final { return foo(); }
;; };
;; char *bar(A *a) {
;; return a->x();
;; }
;; int main(int argc, char **argv) {
;; char *x = foo();
;; char *y = foo();
;; B b;
;; char *z = bar(&b);
;; char *w = bar(&b);
;; A a;
;; char *r = bar(&a);
;; char *s = bar(&a);
;; memset(x, 0, 10);
;; memset(y, 0, 10);
;; memset(z, 0, 10);
;; memset(w, 0, 10);
;; memset(r, 0, 10);
;; memset(s, 0, 10);
;; delete[] x;
;; delete[] w;
;; delete[] r;
;; sleep(10);
;; delete[] y;
;; delete[] z;
;; delete[] s;
;; return 0;
;; }
;;
;; Code compiled with -mllvm -memprof-ave-lifetime-cold-threshold=5 so that the
;; memory freed after sleep(10) results in cold lifetimes.
;;
;; Compiled without optimization to prevent inlining and devirtualization.
;;
;; The IR was then reduced using llvm-reduce with the expected FileCheck input.
;; -stats requires asserts
; REQUIRES: asserts
; RUN: opt -passes=memprof-context-disambiguation -supports-hot-cold-new \
; RUN: -memprof-verify-ccg -memprof-verify-nodes -memprof-dump-ccg \
; RUN: -memprof-export-to-dot -memprof-dot-file-path-prefix=%t. \
; RUN: -stats -pass-remarks=memprof-context-disambiguation \
; RUN: %s -S 2>&1 | FileCheck %s --check-prefix=DUMP --check-prefix=IR \
; RUN: --check-prefix=STATS --check-prefix=REMARKS
; RUN: cat %t.ccg.postbuild.dot | FileCheck %s --check-prefix=DOT
;; We should only create a single clone of foo, for the direct call
;; from main allocating cold memory.
; RUN: cat %t.ccg.cloned.dot | FileCheck %s --check-prefix=DOTCLONED
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
declare ptr @_Z3barP1A(ptr)
define i32 @main(ptr %b, ptr %a) #0 {
entry:
%call = call noundef ptr @_Z3foov(), !callsite !0
%call1 = call noundef ptr @_Z3foov(), !callsite !1
%call2 = call noundef ptr @_Z3barP1A(ptr noundef %b), !callsite !2
%call3 = call noundef ptr @_Z3barP1A(ptr noundef %b), !callsite !3
%call4 = call noundef ptr @_Z3barP1A(ptr noundef %a), !callsite !4
%call5 = call noundef ptr @_Z3barP1A(ptr noundef %a), !callsite !5
ret i32 0
}
; Function Attrs: noinline
declare void @_ZN1BC2Ev() #1
; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2
; Function Attrs: nobuiltin
declare void @_ZdaPv() #3
define internal ptr @_ZN1A1xEv() #4 {
entry:
%call = call noundef ptr @_Z3foov(), !callsite !6
ret ptr null
}
; Function Attrs: mustprogress uwtable
define internal ptr @_ZN1B1xEv() #5 {
entry:
%call = call noundef ptr @_Z3foov(), !callsite !7
ret ptr null
}
; Function Attrs: mustprogress uwtable
define internal ptr @_Z3foov() #5 {
entry:
%call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #7, !memprof !8, !callsite !21
ret ptr null
}
declare ptr @_Znam(i64) #6
; uselistorder directives
uselistorder ptr @_Z3foov, { 3, 2, 1, 0 }
attributes #0 = { "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" }
attributes #1 = { noinline }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { nobuiltin }
attributes #4 = { "tune-cpu"="generic" }
attributes #5 = { mustprogress uwtable "disable-tail-calls"="true" "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { "disable-tail-calls"="true" }
attributes #7 = { builtin }
!0 = !{i64 8632435727821051414}
!1 = !{i64 -3421689549917153178}
!2 = !{i64 6792096022461663180}
!3 = !{i64 -2709642582978494015}
!4 = !{i64 748269490701775343}
!5 = !{i64 -5747251260480066785}
!6 = !{i64 8256774051149711748}
!7 = !{i64 -4831879094954754638}
!8 = !{!9, !11, !13, !15, !17, !19}
!9 = !{!10, !"notcold"}
!10 = !{i64 2732490490862098848, i64 8256774051149711748, i64 -4820244510750103755, i64 748269490701775343}
!11 = !{!12, !"cold"}
!12 = !{i64 2732490490862098848, i64 8256774051149711748, i64 -4820244510750103755, i64 -5747251260480066785}
!13 = !{!14, !"notcold"}
!14 = !{i64 2732490490862098848, i64 8632435727821051414}
!15 = !{!16, !"cold"}
!16 = !{i64 2732490490862098848, i64 -4831879094954754638, i64 -4820244510750103755, i64 6792096022461663180}
!17 = !{!18, !"notcold"}
!18 = !{i64 2732490490862098848, i64 -4831879094954754638, i64 -4820244510750103755, i64 -2709642582978494015}
!19 = !{!20, !"cold"}
!20 = !{i64 2732490490862098848, i64 -3421689549917153178}
!21 = !{i64 2732490490862098848}
; DUMP: CCG before cloning:
; DUMP: Callsite Context Graph:
; DUMP: Node [[FOO:0x[a-z0-9]+]]
; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #7 (clone 0)
; DUMP: AllocTypes: NotColdCold
; DUMP: ContextIds: 1 2 3 4 5 6
; DUMP: CalleeEdges:
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[FOO]] to Caller: [[AX:0x[a-z0-9]+]] AllocTypes: NotColdCold ContextIds: 1 2
; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 3
; DUMP: Edge from Callee [[FOO]] to Caller: [[BX:0x[a-z0-9]+]] AllocTypes: NotColdCold ContextIds: 4 5
; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN2:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 6
; DUMP: Node [[AX]]
; DUMP: %call = call noundef ptr @_Z3foov() (clone 0)
; DUMP: AllocTypes: NotColdCold
; DUMP: ContextIds: 1 2
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[FOO]] to Caller: [[AX]] AllocTypes: NotColdCold ContextIds: 1 2
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[AX]] to Caller: [[BAR:0x[a-z0-9]+]] AllocTypes: NotColdCold ContextIds: 1 2
;; Bar contains an indirect call, with multiple targets. It's call should be null.
; DUMP: Node [[BAR]]
; DUMP: null Call
; DUMP: AllocTypes: NotColdCold
; DUMP: ContextIds: 1 2 4 5
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[AX]] to Caller: [[BAR]] AllocTypes: NotColdCold ContextIds: 1 2
; DUMP: Edge from Callee [[BX]] to Caller: [[BAR]] AllocTypes: NotColdCold ContextIds: 4 5
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN3:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN4:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 2
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN5:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 4
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN6:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 5
; DUMP: Node [[MAIN3]]
; DUMP: %call4 = call noundef ptr @_Z3barP1A(ptr noundef %a) (clone 0)
; DUMP: AllocTypes: NotCold
; DUMP: ContextIds: 1
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN3]] AllocTypes: NotCold ContextIds: 1
; DUMP: CallerEdges:
; DUMP: Node [[MAIN4]]
; DUMP: %call5 = call noundef ptr @_Z3barP1A(ptr noundef %a) (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 2
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN4]] AllocTypes: Cold ContextIds: 2
; DUMP: CallerEdges:
; DUMP: Node [[MAIN1]]
; DUMP: %call = call noundef ptr @_Z3foov() (clone 0)
; DUMP: AllocTypes: NotCold
; DUMP: ContextIds: 3
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 3
; DUMP: CallerEdges:
; DUMP: Node [[BX]]
; DUMP: %call = call noundef ptr @_Z3foov() (clone 0)
; DUMP: AllocTypes: NotColdCold
; DUMP: ContextIds: 4 5
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[FOO]] to Caller: [[BX]] AllocTypes: NotColdCold ContextIds: 4 5
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[BX]] to Caller: [[BAR]] AllocTypes: NotColdCold ContextIds: 4 5
; DUMP: Node [[MAIN5]]
; DUMP: %call2 = call noundef ptr @_Z3barP1A(ptr noundef %b) (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 4
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN5]] AllocTypes: Cold ContextIds: 4
; DUMP: CallerEdges:
; DUMP: Node [[MAIN6]]
; DUMP: %call3 = call noundef ptr @_Z3barP1A(ptr noundef %b) (clone 0)
; DUMP: AllocTypes: NotCold
; DUMP: ContextIds: 5
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN6]] AllocTypes: NotCold ContextIds: 5
; DUMP: CallerEdges:
; DUMP: Node [[MAIN2]]
; DUMP: %call1 = call noundef ptr @_Z3foov() (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 6
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 6
; DUMP: CallerEdges:
; DUMP: CCG after cloning:
; DUMP: Callsite Context Graph:
; DUMP: Node [[FOO]]
; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #7 (clone 0)
; DUMP: AllocTypes: NotColdCold
; DUMP: ContextIds: 1 2 3 4 5
; DUMP: CalleeEdges:
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[FOO]] to Caller: [[AX]] AllocTypes: NotColdCold ContextIds: 1 2
; DUMP: Edge from Callee [[FOO]] to Caller: [[BX]] AllocTypes: NotColdCold ContextIds: 4 5
; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 3
; DUMP: Clones: [[FOO2:0x[a-z0-9]+]]
; DUMP: Node [[AX]]
; DUMP: %call = call noundef ptr @_Z3foov() (clone 0)
; DUMP: AllocTypes: NotColdCold
; DUMP: ContextIds: 1 2
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[FOO]] to Caller: [[AX]] AllocTypes: NotColdCold ContextIds: 1 2
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[AX]] to Caller: [[BAR]] AllocTypes: NotColdCold ContextIds: 1 2
; DUMP: Node [[BAR]]
; DUMP: null Call
; DUMP: AllocTypes: NotColdCold
; DUMP: ContextIds: 1 2 4 5
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[AX]] to Caller: [[BAR]] AllocTypes: NotColdCold ContextIds: 1 2
; DUMP: Edge from Callee [[BX]] to Caller: [[BAR]] AllocTypes: NotColdCold ContextIds: 4 5
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN3]] AllocTypes: NotCold ContextIds: 1
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN4]] AllocTypes: Cold ContextIds: 2
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN5]] AllocTypes: Cold ContextIds: 4
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN6]] AllocTypes: NotCold ContextIds: 5
; DUMP: Node [[MAIN3]]
; DUMP: %call4 = call noundef ptr @_Z3barP1A(ptr noundef %a) (clone 0)
; DUMP: AllocTypes: NotCold
; DUMP: ContextIds: 1
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN3]] AllocTypes: NotCold ContextIds: 1
; DUMP: CallerEdges:
; DUMP: Node [[MAIN4]]
; DUMP: %call5 = call noundef ptr @_Z3barP1A(ptr noundef %a) (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 2
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN4]] AllocTypes: Cold ContextIds: 2
; DUMP: CallerEdges:
; DUMP: Node [[MAIN1]]
; DUMP: %call = call noundef ptr @_Z3foov() (clone 0)
; DUMP: AllocTypes: NotCold
; DUMP: ContextIds: 3
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 3
; DUMP: CallerEdges:
; DUMP: Node [[BX]]
; DUMP: %call = call noundef ptr @_Z3foov() (clone 0)
; DUMP: AllocTypes: NotColdCold
; DUMP: ContextIds: 4 5
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[FOO]] to Caller: [[BX]] AllocTypes: NotColdCold ContextIds: 4 5
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[BX]] to Caller: [[BAR]] AllocTypes: NotColdCold ContextIds: 4 5
; DUMP: Node [[MAIN5]]
; DUMP: %call2 = call noundef ptr @_Z3barP1A(ptr noundef %b) (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 4
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN5]] AllocTypes: Cold ContextIds: 4
; DUMP: CallerEdges:
; DUMP: Node [[MAIN6]]
; DUMP: %call3 = call noundef ptr @_Z3barP1A(ptr noundef %b) (clone 0)
; DUMP: AllocTypes: NotCold
; DUMP: ContextIds: 5
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN6]] AllocTypes: NotCold ContextIds: 5
; DUMP: CallerEdges:
; DUMP: Node [[MAIN2]]
; DUMP: %call1 = call noundef ptr @_Z3foov() (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 6
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 6
; DUMP: CallerEdges:
; DUMP: Node [[FOO2]]
; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #7 (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 6
; DUMP: CalleeEdges:
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 6
; DUMP: Clone of [[FOO]]
; REMARKS: created clone _Z3foov.memprof.1
; REMARKS: call in clone main assigned to call function clone _Z3foov.memprof.1
; REMARKS: call in clone _Z3foov.memprof.1 marked with memprof allocation attribute cold
; REMARKS: call in clone _ZN1A1xEv assigned to call function clone _Z3foov
; REMARKS: call in clone _ZN1B1xEv assigned to call function clone _Z3foov
; REMARKS: call in clone main assigned to call function clone _Z3foov
; REMARKS: call in clone _Z3foov marked with memprof allocation attribute notcold
; IR: define {{.*}} @main(
; IR: call {{.*}} @_Z3foov()
;; Only the second call to foo, which allocates cold memory via direct calls,
;; is replaced with a call to a clone that calls a cold allocation.
; IR: call {{.*}} @_Z3foov.memprof.1()
; IR: call {{.*}} @_Z3barP1A(
; IR: call {{.*}} @_Z3barP1A(
; IR: call {{.*}} @_Z3barP1A(
; IR: call {{.*}} @_Z3barP1A(
; IR: define internal {{.*}} @_ZN1A1xEv(
; IR: call {{.*}} @_Z3foov()
; IR: define internal {{.*}} @_ZN1B1xEv(
; IR: call {{.*}} @_Z3foov()
; IR: define internal {{.*}} @_Z3foov()
; IR: call {{.*}} @_Znam(i64 noundef 10) #[[NOTCOLD:[0-9]+]]
; IR: define internal {{.*}} @_Z3foov.memprof.1()
; IR: call {{.*}} @_Znam(i64 noundef 10) #[[COLD:[0-9]+]]
; IR: attributes #[[NOTCOLD]] = { builtin "memprof"="notcold" }
; IR: attributes #[[COLD]] = { builtin "memprof"="cold" }
; STATS: 1 memprof-context-disambiguation - Number of cold static allocations (possibly cloned)
; STATS: 1 memprof-context-disambiguation - Number of not cold static allocations (possibly cloned)
; STATS: 1 memprof-context-disambiguation - Number of function clones created during whole program analysis
; DOT: digraph "postbuild" {
; DOT: label="postbuild";
; DOT: Node[[FOO:0x[a-z0-9]+]] [shape=record,tooltip="N[[FOO]] ContextIds: 1 2 3 4 5 6",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: Alloc0\n_Z3foov -\> _Znam}"];
; DOT: Node[[AX:0x[a-z0-9]+]] [shape=record,tooltip="N[[AX]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: 8256774051149711748\n_ZN1A1xEv -\> _Z3foov}"];
; DOT: Node[[AX]] -> Node[[FOO]][tooltip="ContextIds: 1 2",fillcolor="mediumorchid1"];
; DOT: Node[[BAR:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAR]] ContextIds: 1 2 4 5",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: 13626499562959447861\nnull call (external)}"];
; DOT: Node[[BAR]] -> Node[[AX]][tooltip="ContextIds: 1 2",fillcolor="mediumorchid1"];
; DOT: Node[[BAR]] -> Node[[BX:0x[a-z0-9]+]][tooltip="ContextIds: 4 5",fillcolor="mediumorchid1"];
; DOT: Node[[MAIN1:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN1]] ContextIds: 1",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 748269490701775343\nmain -\> _Z3barP1A}"];
; DOT: Node[[MAIN1]] -> Node[[BAR]][tooltip="ContextIds: 1",fillcolor="brown1"];
; DOT: Node[[MAIN2:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN2]] ContextIds: 2",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 12699492813229484831\nmain -\> _Z3barP1A}"];
; DOT: Node[[MAIN2]] -> Node[[BAR]][tooltip="ContextIds: 2",fillcolor="cyan"];
; DOT: Node[[MAIN3:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN3]] ContextIds: 3",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 8632435727821051414\nmain -\> _Z3foov}"];
; DOT: Node[[MAIN3]] -> Node[[FOO]][tooltip="ContextIds: 3",fillcolor="brown1"];
; DOT: Node[[BX]] [shape=record,tooltip="N[[BX]] ContextIds: 4 5",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: 13614864978754796978\n_ZN1B1xEv -\> _Z3foov}"];
; DOT: Node[[BX]] -> Node[[FOO]][tooltip="ContextIds: 4 5",fillcolor="mediumorchid1"];
; DOT: Node[[MAIN4:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN4]] ContextIds: 4",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 6792096022461663180\nmain -\> _Z3barP1A}"];
; DOT: Node[[MAIN4]] -> Node[[BAR]][tooltip="ContextIds: 4",fillcolor="cyan"];
; DOT: Node[[MAIN5:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN5]] ContextIds: 5",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 15737101490731057601\nmain -\> _Z3barP1A}"];
; DOT: Node[[MAIN5]] -> Node[[BAR]][tooltip="ContextIds: 5",fillcolor="brown1"];
; DOT: Node[[MAIN6:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN6]] ContextIds: 6",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 15025054523792398438\nmain -\> _Z3foov}"];
; DOT: Node[[MAIN6]] -> Node[[FOO]][tooltip="ContextIds: 6",fillcolor="cyan"];
; DOT: }
; DOTCLONED: digraph "cloned" {
; DOTCLONED: label="cloned";
; DOTCLONED: Node[[FOO2:0x[a-z0-9]+]] [shape=record,tooltip="N[[FOO2]] ContextIds: 1 2 3 4 5",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: Alloc0\n_Z3foov -\> _Znam}"];
; DOTCLONED: Node[[AX:0x[a-z0-9]+]] [shape=record,tooltip="N[[AX]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: 8256774051149711748\n_ZN1A1xEv -\> _Z3foov}"];
; DOTCLONED: Node[[AX]] -> Node[[FOO2]][tooltip="ContextIds: 1 2",fillcolor="mediumorchid1"];
; DOTCLONED: Node[[BAR:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAR]] ContextIds: 1 2 4 5",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: 13626499562959447861\nnull call (external)}"];
; DOTCLONED: Node[[BAR]] -> Node[[AX]][tooltip="ContextIds: 1 2",fillcolor="mediumorchid1"];
; DOTCLONED: Node[[BAR]] -> Node[[BX:0x[a-z0-9]+]][tooltip="ContextIds: 4 5",fillcolor="mediumorchid1"];
; DOTCLONED: Node[[MAIN1:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN1]] ContextIds: 1",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 748269490701775343\nmain -\> _Z3barP1A}"];
; DOTCLONED: Node[[MAIN1]] -> Node[[BAR]][tooltip="ContextIds: 1",fillcolor="brown1"];
; DOTCLONED: Node[[MAIN2:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN2]] ContextIds: 2",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 12699492813229484831\nmain -\> _Z3barP1A}"];
; DOTCLONED: Node[[MAIN2]] -> Node[[BAR]][tooltip="ContextIds: 2",fillcolor="cyan"];
; DOTCLONED: Node[[MAIN3:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN3]] ContextIds: 3",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 8632435727821051414\nmain -\> _Z3foov}"];
; DOTCLONED: Node[[MAIN3]] -> Node[[FOO2]][tooltip="ContextIds: 3",fillcolor="brown1"];
; DOTCLONED: Node[[BX]] [shape=record,tooltip="N[[BX]] ContextIds: 4 5",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: 13614864978754796978\n_ZN1B1xEv -\> _Z3foov}"];
; DOTCLONED: Node[[BX]] -> Node[[FOO2]][tooltip="ContextIds: 4 5",fillcolor="mediumorchid1"];
; DOTCLONED: Node[[MAIN4:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN4]] ContextIds: 4",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 6792096022461663180\nmain -\> _Z3barP1A}"];
; DOTCLONED: Node[[MAIN4]] -> Node[[BAR]][tooltip="ContextIds: 4",fillcolor="cyan"];
; DOTCLONED: Node[[MAIN5:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN5]] ContextIds: 5",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 15737101490731057601\nmain -\> _Z3barP1A}"];
; DOTCLONED: Node[[MAIN5]] -> Node[[BAR]][tooltip="ContextIds: 5",fillcolor="brown1"];
; DOTCLONED: Node[[MAIN6:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN6]] ContextIds: 6",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 15025054523792398438\nmain -\> _Z3foov}"];
; DOTCLONED: Node[[MAIN6]] -> Node[[FOO2:0x[a-z0-9]+]][tooltip="ContextIds: 6",fillcolor="cyan"];
; DOTCLONED: Node[[FOO2]] [shape=record,tooltip="N[[FOO2]] ContextIds: 6",fillcolor="cyan",style="filled",color="blue",style="filled,bold,dashed",label="{OrigId: Alloc0\n_Z3foov -\> _Znam}"];
; DOTCLONED: }
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