;; Test callsite context graph generation for call graph with with MIBs
;; that have pruned contexts that partially match multiple inlined
;; callsite contexts, requiring duplication of context ids and nodes
;; while matching callsite nodes onto the graph. Also tests graph and IR
;; cloning.
;;
;; Original code looks like:
;;
;; char *D() {
;; return new char[10];
;; }
;;
;; char *F() {
;; return D();
;; }
;;
;; char *C() {
;; return D();
;; }
;;
;; char *B() {
;; return C();
;; }
;;
;; char *E() {
;; return C();
;; }
;; int main(int argc, char **argv) {
;; char *x = B(); // cold
;; char *y = E(); // cold
;; char *z = F(); // default
;; memset(x, 0, 10);
;; memset(y, 0, 10);
;; memset(z, 0, 10);
;; delete[] z;
;; sleep(10);
;; delete[] x;
;; delete[] y;
;; return 0;
;; }
;;
;; Code compiled with -mllvm -memprof-ave-lifetime-cold-threshold=5 so that the
;; memory freed after sleep(10) results in cold lifetimes.
;;
;; The code below was created by forcing inlining of C into both B and E.
;; Since both allocation contexts via C are cold, the matched memprof
;; metadata has the context pruned above C's callsite. This requires
;; matching the stack node for C to callsites where it was inlined (i.e.
;; the callsites in B and E that have callsite metadata that includes C's).
;; It also requires duplication of that node in the graph as well as the
;; duplication of the context ids along that path through the graph,
;; so that we can represent the duplicated (via inlining) C callsite.
;;
;; 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.prestackupdate.dot | FileCheck %s --check-prefix=DOTPRE
; RUN: cat %t.ccg.postbuild.dot | FileCheck %s --check-prefix=DOTPOST
;; We should clone D once for the cold allocations via C.
; 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"
define internal ptr @_Z1Dv() {
entry:
%call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6, !memprof !0, !callsite !5
ret ptr null
}
declare ptr @_Znam(i64)
define internal ptr @_Z1Fv() #0 {
entry:
%call = call noundef ptr @_Z1Dv(), !callsite !6
ret ptr null
}
; Function Attrs: mustprogress noinline optnone uwtable
define internal ptr @_Z1Cv() #1 {
entry:
%call = call noundef ptr @_Z1Dv(), !callsite !7
ret ptr null
}
; Function Attrs: mustprogress noinline optnone uwtable
define internal ptr @_Z1Bv() #1 {
entry:
%call.i = call noundef ptr @_Z1Dv(), !callsite !8
ret ptr null
}
; Function Attrs: mustprogress noinline optnone uwtable
define internal ptr @_Z1Ev() #1 {
entry:
%call.i = call noundef ptr @_Z1Dv(), !callsite !9
ret ptr null
}
; Function Attrs: noinline
declare i32 @main() #2
; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3
; Function Attrs: nounwind
declare void @_ZdaPv() #4
declare i32 @sleep() #5
attributes #0 = { "disable-tail-calls"="true" }
attributes #1 = { mustprogress noinline optnone 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 #2 = { noinline }
attributes #3 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { nounwind }
attributes #5 = { "no-trapping-math"="true" }
attributes #6 = { builtin }
!0 = !{!1, !3}
!1 = !{!2, !"cold"}
!2 = !{i64 6541423618768552252, i64 -6270142974039008131}
!3 = !{!4, !"notcold"}
!4 = !{i64 6541423618768552252, i64 -4903163940066524832}
!5 = !{i64 6541423618768552252}
!6 = !{i64 -4903163940066524832}
!7 = !{i64 -6270142974039008131}
!8 = !{i64 -6270142974039008131, i64 -184525619819294889}
!9 = !{i64 -6270142974039008131, i64 1905834578520680781}
;; After adding only the alloc node memprof metadata, we only have 2 contexts.
; DUMP: CCG before updating call stack chains:
; DUMP: Callsite Context Graph:
; DUMP: Node [[D:0x[a-z0-9]+]]
; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6 (clone 0)
; DUMP: AllocTypes: NotColdCold
; DUMP: ContextIds: 1 2
; DUMP: CalleeEdges:
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[D]] to Caller: [[C:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 1
; DUMP: Edge from Callee [[D]] to Caller: [[F:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 2
; DUMP: Node [[C]]
; DUMP: null Call
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 1
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[D]] to Caller: [[C]] AllocTypes: Cold ContextIds: 1
; DUMP: CallerEdges:
; DUMP: Node [[F]]
; DUMP: null Call
; DUMP: AllocTypes: NotCold
; DUMP: ContextIds: 2
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[D]] to Caller: [[F]] AllocTypes: NotCold ContextIds: 2
; DUMP: CallerEdges:
;; After updating for callsite metadata, we should have generated context ids 3 and 4,
;; along with 2 new nodes for those callsites. All have the same allocation type
;; behavior as the original C node.
; DUMP: CCG before cloning:
; DUMP: Callsite Context Graph:
; DUMP: Node [[D]]
; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6 (clone 0)
; DUMP: AllocTypes: NotColdCold
; DUMP: ContextIds: 1 2 3 4
; DUMP: CalleeEdges:
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[D]] to Caller: [[F]] AllocTypes: NotCold ContextIds: 2
; DUMP: Edge from Callee [[D]] to Caller: [[C2:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 3
; DUMP: Edge from Callee [[D]] to Caller: [[B:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 4
; DUMP: Edge from Callee [[D]] to Caller: [[E:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 1
; DUMP: Node [[F]]
; DUMP: %call = call noundef ptr @_Z1Dv() (clone 0)
; DUMP: AllocTypes: NotCold
; DUMP: ContextIds: 2
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[D]] to Caller: [[F]] AllocTypes: NotCold ContextIds: 2
; DUMP: CallerEdges:
; DUMP: Node [[C2]]
; DUMP: %call = call noundef ptr @_Z1Dv() (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 3
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[D]] to Caller: [[C2]] AllocTypes: Cold ContextIds: 3
; DUMP: CallerEdges:
; DUMP: Node [[B]]
; DUMP: %call.i = call noundef ptr @_Z1Dv() (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 4
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[D]] to Caller: [[B]] AllocTypes: Cold ContextIds: 4
; DUMP: CallerEdges:
; DUMP: Node [[E]]
; DUMP: %call.i = call noundef ptr @_Z1Dv() (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 1
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[D]] to Caller: [[E]] AllocTypes: Cold ContextIds: 1
; DUMP: CallerEdges:
; DUMP: CCG after cloning:
; DUMP: Callsite Context Graph:
; DUMP: Node [[D]]
; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6 (clone 0)
; DUMP: AllocTypes: NotCold
; DUMP: ContextIds: 2
; DUMP: CalleeEdges:
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[D]] to Caller: [[F]] AllocTypes: NotCold ContextIds: 2
; DUMP: Clones: [[D2:0x[a-z0-9]+]]
; DUMP: Node [[F]]
; DUMP: %call = call noundef ptr @_Z1Dv() (clone 0)
; DUMP: AllocTypes: NotCold
; DUMP: ContextIds: 2
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[D]] to Caller: [[F]] AllocTypes: NotCold ContextIds: 2
; DUMP: CallerEdges:
; DUMP: Node [[C2]]
; DUMP: %call = call noundef ptr @_Z1Dv() (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 3
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[D2]] to Caller: [[C2]] AllocTypes: Cold ContextIds: 3
; DUMP: CallerEdges:
; DUMP: Node [[B]]
; DUMP: %call.i = call noundef ptr @_Z1Dv() (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 4
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[D2]] to Caller: [[B]] AllocTypes: Cold ContextIds: 4
; DUMP: CallerEdges:
; DUMP: Node [[E]]
; DUMP: %call.i = call noundef ptr @_Z1Dv() (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 1
; DUMP: CalleeEdges:
; DUMP: Edge from Callee [[D2]] to Caller: [[E]] AllocTypes: Cold ContextIds: 1
; DUMP: CallerEdges:
; DUMP: Node [[D2]]
; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6 (clone 0)
; DUMP: AllocTypes: Cold
; DUMP: ContextIds: 1 3 4
; DUMP: CalleeEdges:
; DUMP: CallerEdges:
; DUMP: Edge from Callee [[D2]] to Caller: [[E:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 1
; DUMP: Edge from Callee [[D2]] to Caller: [[C2:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 3
; DUMP: Edge from Callee [[D2]] to Caller: [[B:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 4
; DUMP: Clone of [[D]]
; REMARKS: created clone _Z1Dv.memprof.1
; REMARKS: call in clone _Z1Ev assigned to call function clone _Z1Dv.memprof.1
; REMARKS: call in clone _Z1Cv assigned to call function clone _Z1Dv.memprof.1
; REMARKS: call in clone _Z1Bv assigned to call function clone _Z1Dv.memprof.1
; REMARKS: call in clone _Z1Dv.memprof.1 marked with memprof allocation attribute cold
; REMARKS: call in clone _Z1Fv assigned to call function clone _Z1Dv
; REMARKS: call in clone _Z1Dv marked with memprof allocation attribute notcold
;; The allocation via F does not allocate cold memory. It should call the
;; original D, which ultimately call the original allocation decorated
;; with a "notcold" attribute.
; IR: define internal {{.*}} @_Z1Dv()
; IR: call {{.*}} @_Znam(i64 noundef 10) #[[NOTCOLD:[0-9]+]]
; IR: define internal {{.*}} @_Z1Fv()
; IR: call {{.*}} @_Z1Dv()
;; The allocations via B and E allocate cold memory. They should call the
;; cloned D, which ultimately call the cloned allocation decorated with a
;; "cold" attribute.
; IR: define internal {{.*}} @_Z1Bv()
; IR: call {{.*}} @_Z1Dv.memprof.1()
; IR: define internal {{.*}} @_Z1Ev()
; IR: call {{.*}} @_Z1Dv.memprof.1()
; IR: define internal {{.*}} @_Z1Dv.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
; DOTPRE: digraph "prestackupdate" {
; DOTPRE: label="prestackupdate";
; DOTPRE: Node[[D:0x[a-z0-9]+]] [shape=record,tooltip="N[[D]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: Alloc0\n_Z1Dv -\> _Znam}"];
; DOTPRE: Node[[C:0x[a-z0-9]+]] [shape=record,tooltip="N[[C]] ContextIds: 1",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 12176601099670543485\nnull call (external)}"];
; DOTPRE: Node[[C]] -> Node[[D]][tooltip="ContextIds: 1",fillcolor="cyan"];
; DOTPRE: Node[[F:0x[a-z0-9]+]] [shape=record,tooltip="N[[F]] ContextIds: 2",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 13543580133643026784\nnull call (external)}"];
; DOTPRE: Node[[F]] -> Node[[D]][tooltip="ContextIds: 2",fillcolor="brown1"];
; DOTPRE: }
; DOTPOST:digraph "postbuild" {
; DOTPOST: label="postbuild";
; DOTPOST: Node[[D:0x[a-z0-9]+]] [shape=record,tooltip="N[[D]] ContextIds: 1 2 3 4",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: Alloc0\n_Z1Dv -\> _Znam}"];
; DOTPOST: Node[[F:0x[a-z0-9]+]] [shape=record,tooltip="N[[F]] ContextIds: 2",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 13543580133643026784\n_Z1Fv -\> _Z1Dv}"];
; DOTPOST: Node[[F]] -> Node[[D]][tooltip="ContextIds: 2",fillcolor="brown1"];
; DOTPOST: Node[[C:0x[a-z0-9]+]] [shape=record,tooltip="N[[C]] ContextIds: 3",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 0\n_Z1Cv -\> _Z1Dv}"];
; DOTPOST: Node[[C]] -> Node[[D]][tooltip="ContextIds: 3",fillcolor="cyan"];
; DOTPOST: Node[[B:0x[a-z0-9]+]] [shape=record,tooltip="N[[B]] ContextIds: 4",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 0\n_Z1Bv -\> _Z1Dv}"];
; DOTPOST: Node[[B]] -> Node[[D]][tooltip="ContextIds: 4",fillcolor="cyan"];
; DOTPOST: Node[[E:0x[a-z0-9]+]] [shape=record,tooltip="N[[E]] ContextIds: 1",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 0\n_Z1Ev -\> _Z1Dv}"];
; DOTPOST: Node[[E]] -> Node[[D]][tooltip="ContextIds: 1",fillcolor="cyan"];
; DOTPOST:}
; DOTCLONED: digraph "cloned" {
; DOTCLONED: label="cloned";
; DOTCLONED: Node[[D:0x[a-z0-9]+]] [shape=record,tooltip="N[[D]] ContextIds: 2",fillcolor="brown1",style="filled",style="filled",label="{OrigId: Alloc0\n_Z1Dv -\> _Znam}"];
; DOTCLONED: Node[[F:0x[a-z0-9]+]] [shape=record,tooltip="N[[F]] ContextIds: 2",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 13543580133643026784\n_Z1Fv -\> _Z1Dv}"];
; DOTCLONED: Node[[F]] -> Node[[D]][tooltip="ContextIds: 2",fillcolor="brown1"];
; DOTCLONED: Node[[C:0x[a-z0-9]+]] [shape=record,tooltip="N[[C]] ContextIds: 3",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 0\n_Z1Cv -\> _Z1Dv}"];
; DOTCLONED: Node[[C]] -> Node[[D2:0x[a-z0-9]+]][tooltip="ContextIds: 3",fillcolor="cyan"];
; DOTCLONED: Node[[B:0x[a-z0-9]+]] [shape=record,tooltip="N[[B]] ContextIds: 4",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 0\n_Z1Bv -\> _Z1Dv}"];
; DOTCLONED: Node[[B]] -> Node[[D2]][tooltip="ContextIds: 4",fillcolor="cyan"];
; DOTCLONED: Node[[E:0x[a-z0-9]+]] [shape=record,tooltip="N[[E]] ContextIds: 1",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 0\n_Z1Ev -\> _Z1Dv}"];
; DOTCLONED: Node[[E]] -> Node[[D2]][tooltip="ContextIds: 1",fillcolor="cyan"];
; DOTCLONED: Node[[D2]] [shape=record,tooltip="N[[D2]] ContextIds: 1 3 4",fillcolor="cyan",style="filled",color="blue",style="filled,bold,dashed",label="{OrigId: Alloc0\n_Z1Dv -\> _Znam}"];
; DOTCLONED: }
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