;; Test callsite context graph generation for call graph with two memprof ;; contexts and partial inlining, requiring generation of a new fused node to ;; represent the inlined sequence while matching callsite nodes onto the graph. ;; Also tests graph and IR cloning. ;; ;; Original code looks like: ;; ;; char *bar() { ;; return new char[10]; ;; } ;; ;; char *baz() { ;; return bar(); ;; } ;; ;; char *foo() { ;; return baz(); ;; } ;; ;; int main(int argc, char **argv) { ;; char *x = foo(); ;; char *y = foo(); ;; memset(x, 0, 10); ;; memset(y, 0, 10); ;; delete[] x; ;; sleep(10); ;; 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 baz into foo, and ;; bar into baz. Due to the inlining of bar we will initially have two ;; allocation nodes in the graph. This tests that we correctly match ;; foo (with baz inlined) onto the graph nodes first, and generate a new ;; fused node for it. We should then not match baz (with bar inlined) as that ;; is not reached by the MIB contexts (since all calls from main will look ;; like main -> foo(+baz) -> bar after the inlining reflected in this IR). ;; ;; The IR was then reduced using llvm-reduce with the expected FileCheck input. ;; -stats requires asserts ; REQUIRES: asserts ; RUN: opt -thinlto-bc %s >%t.o ; RUN: llvm-lto2 run %t.o -enable-memprof-context-disambiguation \ ; RUN: -supports-hot-cold-new \ ; RUN: -r=%t.o,main,plx \ ; RUN: -r=%t.o,_ZdaPv, \ ; RUN: -r=%t.o,sleep, \ ; RUN: -r=%t.o,_Znam, \ ; 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 -save-temps \ ; RUN: -o %t.out 2>&1 | FileCheck %s --check-prefix=DUMP \ ; RUN: --check-prefix=STATS --check-prefix=STATS-BE \ ; RUN: --check-prefix=STATS-INPROCESS-BE --check-prefix=REMARKS ; RUN: cat %t.ccg.postbuild.dot | FileCheck %s --check-prefix=DOT ;; We should create clones for foo and bar for the call from main to allocate ;; cold memory. ; RUN: cat %t.ccg.cloned.dot | FileCheck %s --check-prefix=DOTCLONED ; RUN: llvm-dis %t.out.1.4.opt.bc -o - | FileCheck %s --check-prefix=IR ;; Try again but with distributed ThinLTO ; RUN: llvm-lto2 run %t.o -enable-memprof-context-disambiguation \ ; RUN: -supports-hot-cold-new \ ; RUN: -thinlto-distributed-indexes \ ; RUN: -r=%t.o,main,plx \ ; RUN: -r=%t.o,_ZdaPv, \ ; RUN: -r=%t.o,sleep, \ ; RUN: -r=%t.o,_Znam, \ ; RUN: -memprof-verify-ccg -memprof-verify-nodes -memprof-dump-ccg \ ; RUN: -memprof-export-to-dot -memprof-dot-file-path-prefix=%t2. \ ; RUN: -stats -pass-remarks=memprof-context-disambiguation \ ; RUN: -o %t2.out 2>&1 | FileCheck %s --check-prefix=DUMP \ ; RUN: --check-prefix=STATS ; RUN: cat %t.ccg.postbuild.dot | FileCheck %s --check-prefix=DOT ;; We should create clones for foo and bar for the call from main to allocate ;; cold memory. ; RUN: cat %t.ccg.cloned.dot | FileCheck %s --check-prefix=DOTCLONED ;; Run ThinLTO backend ; RUN: opt -passes=memprof-context-disambiguation \ ; RUN: -memprof-import-summary=%t.o.thinlto.bc \ ; RUN: -stats -pass-remarks=memprof-context-disambiguation \ ; RUN: %t.o -S 2>&1 | FileCheck %s --check-prefix=IR \ ; RUN: --check-prefix=STATS-BE --check-prefix=STATS-DISTRIB-BE \ ; RUN: --check-prefix=REMARKS source_filename = "inlined.ll" 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 @_Z3barv() #0 { entry: %call = call ptr @_Znam(i64 0), !memprof !0, !callsite !5 ret ptr null } declare ptr @_Znam(i64) define internal ptr @_Z3bazv() #0 { entry: %call.i = call ptr @_Znam(i64 0), !memprof !0, !callsite !6 ret ptr null } define internal ptr @_Z3foov() #0 { entry: %call.i = call ptr @_Z3barv(), !callsite !7 ret ptr null } define i32 @main() #0 { entry: %call = call ptr @_Z3foov(), !callsite !8 %call1 = call ptr @_Z3foov(), !callsite !9 ret i32 0 } declare void @_ZdaPv() declare i32 @sleep() attributes #0 = { noinline optnone } !0 = !{!1, !3} !1 = !{!2, !"notcold"} !2 = !{i64 9086428284934609951, i64 -5964873800580613432, i64 2732490490862098848, i64 8632435727821051414} !3 = !{!4, !"cold"} !4 = !{i64 9086428284934609951, i64 -5964873800580613432, i64 2732490490862098848, i64 -3421689549917153178} !5 = !{i64 9086428284934609951} !6 = !{i64 9086428284934609951, i64 -5964873800580613432} !7 = !{i64 -5964873800580613432, i64 2732490490862098848} !8 = !{i64 8632435727821051414} !9 = !{i64 -3421689549917153178} ; DUMP: CCG before cloning: ; DUMP: Callsite Context Graph: ; DUMP: Node [[BAZ:0x[a-z0-9]+]] ; DUMP: Versions: 1 MIB: ; DUMP: AllocType 1 StackIds: 1, 2 ; DUMP: AllocType 2 StackIds: 1, 3 ; DUMP: (clone 0) ; DUMP: AllocTypes: NotColdCold ; DUMP: ContextIds: 1 2 ; DUMP: CalleeEdges: ; DUMP: CallerEdges: ; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO2:0x[a-z0-9]+]] AllocTypes: NotColdCold ContextIds: 1 2 ;; This is leftover from the MIB on the alloc inlined into baz. It is not ;; matched with any call, since there is no such node in the IR. Due to the ;; null call it will not participate in any context transformations. ; DUMP: Node [[FOO2]] ; DUMP: null Call ; DUMP: AllocTypes: NotColdCold ; DUMP: ContextIds: 1 2 ; DUMP: CalleeEdges: ; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO2]] AllocTypes: NotColdCold ContextIds: 1 2 ; DUMP: CallerEdges: ; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN1:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1 ; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN2:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 2 ; DUMP: Node [[MAIN1]] ; DUMP: Callee: 644169328058379925 (_Z3foov) Clones: 0 StackIds: 2 (clone 0) ; DUMP: AllocTypes: NotCold ; DUMP: ContextIds: 1 3 ; DUMP: CalleeEdges: ; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 1 ; DUMP: Edge from Callee [[FOO:0x[a-z0-9]+]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 3 ; DUMP: CallerEdges: ; DUMP: Node [[MAIN2]] ; DUMP: Callee: 644169328058379925 (_Z3foov) Clones: 0 StackIds: 3 (clone 0) ; DUMP: AllocTypes: Cold ; DUMP: ContextIds: 2 4 ; DUMP: CalleeEdges: ; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 2 ; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 4 ; DUMP: CallerEdges: ; DUMP: Node [[BAR:0x[a-z0-9]+]] ; DUMP: Versions: 1 MIB: ; DUMP: AllocType 1 StackIds: 0, 1, 2 ; DUMP: AllocType 2 StackIds: 0, 1, 3 ; DUMP: (clone 0) ; DUMP: AllocTypes: NotColdCold ; DUMP: ContextIds: 3 4 ; DUMP: CalleeEdges: ; DUMP: CallerEdges: ; DUMP: Edge from Callee [[BAR]] to Caller: [[FOO]] AllocTypes: NotColdCold ContextIds: 3 4 ;; This is the node synthesized for the call to bar in foo that was created ;; by inlining baz into foo. ; DUMP: Node [[FOO]] ; DUMP: Callee: 10349908617508457487 (_Z3barv) Clones: 0 StackIds: 0, 1 (clone 0) ; DUMP: AllocTypes: NotColdCold ; DUMP: ContextIds: 3 4 ; DUMP: CalleeEdges: ; DUMP: Edge from Callee [[BAR]] to Caller: [[FOO]] AllocTypes: NotColdCold ContextIds: 3 4 ; DUMP: CallerEdges: ; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 3 ; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 4 ; DUMP: CCG after cloning: ; DUMP: Callsite Context Graph: ; DUMP: Node [[BAZ]] ; DUMP: Versions: 1 MIB: ; DUMP: AllocType 1 StackIds: 1, 2 ; DUMP: AllocType 2 StackIds: 1, 3 ; DUMP: (clone 0) ; DUMP: AllocTypes: NotColdCold ; DUMP: ContextIds: 1 2 ; DUMP: CalleeEdges: ; DUMP: CallerEdges: ; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO2]] AllocTypes: NotColdCold ContextIds: 1 2 ; DUMP: Node [[FOO2]] ; DUMP: null Call ; DUMP: AllocTypes: NotColdCold ; DUMP: ContextIds: 1 2 ; DUMP: CalleeEdges: ; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO2]] AllocTypes: NotColdCold ContextIds: 1 2 ; DUMP: CallerEdges: ; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 1 ; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 2 ; DUMP: Node [[MAIN1]] ; DUMP: Callee: 644169328058379925 (_Z3foov) Clones: 0 StackIds: 2 (clone 0) ; DUMP: AllocTypes: NotCold ; DUMP: ContextIds: 1 3 ; DUMP: CalleeEdges: ; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 1 ; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 3 ; DUMP: CallerEdges: ; DUMP: Node [[MAIN2]] ; DUMP: Callee: 644169328058379925 (_Z3foov) Clones: 0 StackIds: 3 (clone 0) ; DUMP: AllocTypes: Cold ; DUMP: ContextIds: 2 4 ; DUMP: CalleeEdges: ; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 2 ; DUMP: Edge from Callee [[FOO3:0x[a-z0-9]+]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 4 ; DUMP: CallerEdges: ; DUMP: Node [[BAR]] ; DUMP: Versions: 1 MIB: ; DUMP: AllocType 1 StackIds: 0, 1, 2 ; DUMP: AllocType 2 StackIds: 0, 1, 3 ; DUMP: (clone 0) ; DUMP: AllocTypes: NotCold ; DUMP: ContextIds: 3 ; DUMP: CalleeEdges: ; DUMP: CallerEdges: ; DUMP: Edge from Callee [[BAR]] to Caller: [[FOO]] AllocTypes: NotCold ContextIds: 3 ; DUMP: Clones: [[BAR2:0x[a-z0-9]+]] ; DUMP: Node [[FOO]] ; DUMP: Callee: 10349908617508457487 (_Z3barv) Clones: 0 StackIds: 0, 1 (clone 0) ; DUMP: AllocTypes: NotCold ; DUMP: ContextIds: 3 ; DUMP: CalleeEdges: ; DUMP: Edge from Callee [[BAR]] to Caller: [[FOO]] AllocTypes: NotCold ContextIds: 3 ; DUMP: CallerEdges: ; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 3 ; DUMP: Clones: [[FOO3]] ; DUMP: Node [[FOO3]] ; DUMP: Callee: 10349908617508457487 (_Z3barv) Clones: 0 StackIds: 0, 1 (clone 0) ; DUMP: AllocTypes: Cold ; DUMP: ContextIds: 4 ; DUMP: CalleeEdges: ; DUMP: Edge from Callee [[BAR2]] to Caller: [[FOO3]] AllocTypes: Cold ContextIds: 4 ; DUMP: CallerEdges: ; DUMP: Edge from Callee [[FOO3]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 4 ; DUMP: Clone of [[FOO]] ; DUMP: Node [[BAR2]] ; DUMP: Versions: 1 MIB: ; DUMP: AllocType 1 StackIds: 0, 1, 2 ; DUMP: AllocType 2 StackIds: 0, 1, 3 ; DUMP: (clone 0) ; DUMP: AllocTypes: Cold ; DUMP: ContextIds: 4 ; DUMP: CalleeEdges: ; DUMP: CallerEdges: ; DUMP: Edge from Callee [[BAR2]] to Caller: [[FOO3]] AllocTypes: Cold ContextIds: 4 ; DUMP: Clone of [[BAR]] ; REMARKS: created clone _Z3barv.memprof.1 ; REMARKS: call in clone _Z3barv marked with memprof allocation attribute notcold ; REMARKS: call in clone _Z3barv.memprof.1 marked with memprof allocation attribute cold ; REMARKS: created clone _Z3foov.memprof.1 ; REMARKS: call in clone _Z3foov.memprof.1 assigned to call function clone _Z3barv.memprof.1 ; REMARKS: call in clone main assigned to call function clone _Z3foov.memprof.1 ; IR: define internal {{.*}} @_Z3barv() ; IR: call {{.*}} @_Znam(i64 0) #[[NOTCOLD:[0-9]+]] ; IR: define internal {{.*}} @_Z3foov() ; IR: call {{.*}} @_Z3barv() ; IR: define {{.*}} @main() ;; The first call to foo does not allocate cold memory. It should call the ;; original functions, which ultimately call the original allocation decorated ;; with a "notcold" attribute. ; IR: call {{.*}} @_Z3foov() ;; The second call to foo allocates cold memory. It should call cloned functions ;; which ultimately call a cloned allocation decorated with a "cold" attribute. ; IR: call {{.*}} @_Z3foov.memprof.1() ; IR: define internal {{.*}} @_Z3barv.memprof.1() ; IR: call {{.*}} @_Znam(i64 0) #[[COLD:[0-9]+]] ; IR: define internal {{.*}} @_Z3foov.memprof.1() ; IR: call {{.*}} @_Z3barv.memprof.1() ; IR: attributes #[[NOTCOLD]] = { "memprof"="notcold" } ; IR: attributes #[[COLD]] = { "memprof"="cold" } ; STATS: 1 memprof-context-disambiguation - Number of cold static allocations (possibly cloned) ; STATS-BE: 1 memprof-context-disambiguation - Number of cold static allocations (possibly cloned) during ThinLTO backend ; STATS: 2 memprof-context-disambiguation - Number of not cold static allocations (possibly cloned) ; STATS-BE: 1 memprof-context-disambiguation - Number of not cold static allocations (possibly cloned) during ThinLTO backend ; STATS-INPROCESS-BE: 2 memprof-context-disambiguation - Number of allocation versions (including clones) during ThinLTO backend ;; The distributed backend hasn't yet eliminated the now-dead baz with ;; the allocation from bar inlined, so it has one more allocation. ; STATS-DISTRIB-BE: 3 memprof-context-disambiguation - Number of allocation versions (including clones) during ThinLTO backend ; STATS: 2 memprof-context-disambiguation - Number of function clones created during whole program analysis ; STATS-BE: 2 memprof-context-disambiguation - Number of function clones created during ThinLTO backend ; STATS-BE: 2 memprof-context-disambiguation - Number of functions that had clones created during ThinLTO backend ; STATS-BE: 2 memprof-context-disambiguation - Maximum number of allocation versions created for an original allocation during ThinLTO backend ; STATS-INPROCESS-BE: 1 memprof-context-disambiguation - Number of original (not cloned) allocations with memprof profiles during ThinLTO backend ;; The distributed backend hasn't yet eliminated the now-dead baz with ;; the allocation from bar inlined, so it has one more allocation. ; STATS-DISTRIB-BE: 2 memprof-context-disambiguation - Number of original (not cloned) allocations with memprof profiles during ThinLTO backend ; DOT: digraph "postbuild" { ; DOT: label="postbuild"; ; DOT: Node[[BAZ:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAZ]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: Alloc0\n_Z3bazv -\> alloc}"]; ; DOT: Node[[FOO:0x[a-z0-9]+]] [shape=record,tooltip="N[[FOO]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: 2732490490862098848\nnull call (external)}"]; ; DOT: Node[[FOO]] -> Node[[BAZ]][tooltip="ContextIds: 1 2",fillcolor="mediumorchid1"]; ; DOT: Node[[MAIN1:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN1]] ContextIds: 1 3",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 8632435727821051414\nmain -\> _Z3foov}"]; ; DOT: Node[[MAIN1]] -> Node[[FOO]][tooltip="ContextIds: 1",fillcolor="brown1"]; ; DOT: Node[[MAIN1]] -> Node[[FOO2:0x[a-z0-9]+]][tooltip="ContextIds: 3",fillcolor="brown1"]; ; DOT: Node[[MAIN2:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN2]] ContextIds: 2 4",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 15025054523792398438\nmain -\> _Z3foov}"]; ; DOT: Node[[MAIN2]] -> Node[[FOO]][tooltip="ContextIds: 2",fillcolor="cyan"]; ; DOT: Node[[MAIN2]] -> Node[[FOO2]][tooltip="ContextIds: 4",fillcolor="cyan"]; ; DOT: Node[[BAR:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAR]] ContextIds: 3 4",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: Alloc2\n_Z3barv -\> alloc}"]; ; DOT: Node[[FOO2]] [shape=record,tooltip="N[[FOO2]] ContextIds: 3 4",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: 0\n_Z3foov -\> _Z3barv}"]; ; DOT: Node[[FOO2]] -> Node[[BAR]][tooltip="ContextIds: 3 4",fillcolor="mediumorchid1"]; ; DOT: } ; DOTCLONED: digraph "cloned" { ; DOTCLONED: label="cloned"; ; DOTCLONED: Node[[BAZ:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAZ]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: Alloc0\n_Z3bazv -\> alloc}"]; ; DOTCLONED: Node[[FOO2:0x[a-z0-9]+]] [shape=record,tooltip="N[[FOO2]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: 2732490490862098848\nnull call (external)}"]; ; DOTCLONED: Node[[FOO2]] -> Node[[BAZ]][tooltip="ContextIds: 1 2",fillcolor="mediumorchid1"]; ; DOTCLONED: Node[[MAIN1:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN1]] ContextIds: 1 3",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 8632435727821051414\nmain -\> _Z3foov}"]; ; DOTCLONED: Node[[MAIN1]] -> Node[[FOO2]][tooltip="ContextIds: 1",fillcolor="brown1"]; ; DOTCLONED: Node[[MAIN1]] -> Node[[FOO:0x[a-z0-9]+]][tooltip="ContextIds: 3",fillcolor="brown1"]; ; DOTCLONED: Node[[MAIN2:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN2]] ContextIds: 2 4",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 15025054523792398438\nmain -\> _Z3foov}"]; ; DOTCLONED: Node[[MAIN2]] -> Node[[FOO2]][tooltip="ContextIds: 2",fillcolor="cyan"]; ; DOTCLONED: Node[[MAIN2]] -> Node[[FOO3:0x[a-z0-9]+]][tooltip="ContextIds: 4",fillcolor="cyan"]; ; DOTCLONED: Node[[BAR:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAR]] ContextIds: 3",fillcolor="brown1",style="filled",style="filled",label="{OrigId: Alloc2\n_Z3barv -\> alloc}"]; ; DOTCLONED: Node[[FOO]] [shape=record,tooltip="N[[FOO]] ContextIds: 3",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 0\n_Z3foov -\> _Z3barv}"]; ; DOTCLONED: Node[[FOO]] -> Node[[BAR]][tooltip="ContextIds: 3",fillcolor="brown1"]; ; DOTCLONED: Node[[FOO3]] [shape=record,tooltip="N[[FOO3]] ContextIds: 4",fillcolor="cyan",style="filled",color="blue",style="filled,bold,dashed",label="{OrigId: 0\n_Z3foov -\> _Z3barv}"]; ; DOTCLONED: Node[[FOO3]] -> Node[[BAR2:0x[a-z0-9]+]][tooltip="ContextIds: 4",fillcolor="cyan"]; ; DOTCLONED: Node[[BAR2]] [shape=record,tooltip="N[[BAR2]] ContextIds: 4",fillcolor="cyan",style="filled",color="blue",style="filled,bold,dashed",label="{OrigId: Alloc0\n_Z3barv -\> alloc}"]; ; DOTCLONED: }