392 lines
13 KiB
LLVM
392 lines
13 KiB
LLVM
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;; Test callsite context graph generation for call graph with with MIBs
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;; that have pruned contexts that partially match multiple inlined
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;; callsite contexts, requiring duplication of context ids and nodes
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;; while matching callsite nodes onto the graph. This test requires more
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;; complex duplication due to multiple contexts for different allocations
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;; that share some of the same callsite nodes.
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;;
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;; Original code looks like:
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;;
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;; char *D(bool Call1) {
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;; if (Call1)
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;; return new char[10];
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;; else
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;; return new char[10];
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;; }
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;;
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;; char *C(bool Call1) {
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;; return D(Call1);
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;; }
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;;
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;; char *B(bool Call1) {
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;; if (Call1)
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;; return C(true);
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;; else
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;; return C(false);
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;; }
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;;
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;; char *A(bool Call1) {
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;; return B(Call1);
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;; }
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;;
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;; char *A1() {
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;; return A(true);
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;; }
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;;
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;; char *A2() {
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;; return A(true);
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;; }
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;;
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;; char *A3() {
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;; return A(false);
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;; }
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;;
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;; char *A4() {
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;; return A(false);
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;; }
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;;
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;; char *E() {
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;; return B(true);
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;; }
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;;
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;; char *F() {
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;; return B(false);
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;; }
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;;
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;; int main(int argc, char **argv) {
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;; char *a1 = A1(); // cold
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;; char *a2 = A2(); // cold
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;; char *e = E(); // default
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;; char *a3 = A3(); // default
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;; char *a4 = A4(); // default
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;; char *f = F(); // cold
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;; memset(a1, 0, 10);
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;; memset(a2, 0, 10);
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;; memset(e, 0, 10);
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;; memset(a3, 0, 10);
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;; memset(a4, 0, 10);
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;; memset(f, 0, 10);
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;; delete[] a3;
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;; delete[] a4;
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;; delete[] e;
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;; sleep(10);
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;; delete[] a1;
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;; delete[] a2;
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;; delete[] f;
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;; return 0;
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;; }
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;;
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;; Code compiled with -mllvm -memprof-ave-lifetime-cold-threshold=5 so that the
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;; memory freed after sleep(10) results in cold lifetimes.
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;;
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;; The code below was created by forcing inlining of A into its callers,
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;; without any other inlining or optimizations. Since both allocation contexts
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;; via A for each allocation in D have the same allocation type (cold via
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;; A1 and A2 for the first new in D, and non-cold via A3 and A4 for the second
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;; new in D, the contexts for those respective allocations are pruned above A.
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;; The allocations via E and F are to ensure we don't prune above B.
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;;
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;; The matching onto the inlined A[1234]->A sequences will require duplication
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;; of the context id assigned to the context from A for each allocation in D.
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;; This test ensures that we do this correctly in the presence of callsites
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;; shared by the different duplicated context ids (i.e. callsite in C).
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;;
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;; The IR was then reduced using llvm-reduce with the expected FileCheck input.
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; RUN: opt -thinlto-bc %s >%t.o
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; RUN: llvm-lto2 run %t.o -enable-memprof-context-disambiguation \
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; RUN: -supports-hot-cold-new \
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; RUN: -r=%t.o,main,plx \
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; RUN: -r=%t.o,_Z1Db,plx \
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; RUN: -r=%t.o,_Z1Cb,plx \
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; RUN: -r=%t.o,_Z1Bb,plx \
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; RUN: -r=%t.o,_Z1Ab,plx \
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; RUN: -r=%t.o,_Z2A1v,plx \
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; RUN: -r=%t.o,_Z2A2v,plx \
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; RUN: -r=%t.o,_Z2A3v,plx \
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; RUN: -r=%t.o,_Z2A4v,plx \
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; RUN: -r=%t.o,_Z1Ev,plx \
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; RUN: -r=%t.o,_Z1Fv,plx \
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; RUN: -r=%t.o,_ZdaPv, \
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; RUN: -r=%t.o,sleep, \
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; RUN: -r=%t.o,_Znam, \
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; RUN: -memprof-verify-ccg -memprof-verify-nodes -memprof-dump-ccg \
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; RUN: -memprof-export-to-dot -memprof-dot-file-path-prefix=%t. \
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; RUN: -o %t.out 2>&1 | FileCheck %s --check-prefix=DUMP
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define ptr @_Z1Db(i1 %Call1) {
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entry:
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%call = call ptr @_Znam(i64 0), !memprof !0, !callsite !5
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br label %return
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if.else: ; No predecessors!
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%call1 = call ptr @_Znam(i64 0), !memprof !6, !callsite !11
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br label %return
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return: ; preds = %if.else, %entry
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ret ptr null
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}
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declare ptr @_Znam(i64)
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define ptr @_Z1Cb(i1 %Call1) {
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entry:
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%call = call ptr @_Z1Db(i1 false), !callsite !12
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ret ptr null
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}
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define ptr @_Z1Bb(i1 %Call1) {
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entry:
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%call = call ptr @_Z1Cb(i1 false), !callsite !13
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br label %return
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if.else: ; No predecessors!
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%call1 = call ptr @_Z1Cb(i1 false), !callsite !14
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br label %return
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return: ; preds = %if.else, %entry
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ret ptr null
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}
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define ptr @_Z1Ab() {
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entry:
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%call = call ptr @_Z1Bb(i1 false), !callsite !15
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ret ptr null
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}
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define ptr @_Z2A1v() {
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entry:
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%call.i = call ptr @_Z1Bb(i1 false), !callsite !16
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ret ptr null
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}
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define ptr @_Z2A2v() {
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entry:
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%call.i = call ptr @_Z1Bb(i1 false), !callsite !17
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ret ptr null
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}
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define ptr @_Z2A3v() {
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entry:
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%call.i = call ptr @_Z1Bb(i1 false), !callsite !18
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ret ptr null
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}
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define ptr @_Z2A4v() {
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entry:
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%call.i = call ptr @_Z1Bb(i1 false), !callsite !19
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ret ptr null
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}
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define ptr @_Z1Ev() {
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entry:
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%call = call ptr @_Z1Bb(i1 false), !callsite !20
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ret ptr null
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}
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define ptr @_Z1Fv() {
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entry:
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%call = call ptr @_Z1Bb(i1 false), !callsite !21
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ret ptr null
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}
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declare i32 @main()
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declare void @_ZdaPv()
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declare i32 @sleep()
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; uselistorder directives
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uselistorder ptr @_Znam, { 1, 0 }
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!0 = !{!1, !3}
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!1 = !{!2, !"notcold"}
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!2 = !{i64 4854880825882961848, i64 -904694911315397047, i64 6532298921261778285, i64 1905834578520680781}
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!3 = !{!4, !"cold"}
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!4 = !{i64 4854880825882961848, i64 -904694911315397047, i64 6532298921261778285, i64 -6528110295079665978}
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!5 = !{i64 4854880825882961848}
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!6 = !{!7, !9}
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!7 = !{!8, !"notcold"}
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!8 = !{i64 -8775068539491628272, i64 -904694911315397047, i64 7859682663773658275, i64 -6528110295079665978}
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!9 = !{!10, !"cold"}
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!10 = !{i64 -8775068539491628272, i64 -904694911315397047, i64 7859682663773658275, i64 -4903163940066524832}
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!11 = !{i64 -8775068539491628272}
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!12 = !{i64 -904694911315397047}
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!13 = !{i64 6532298921261778285}
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!14 = !{i64 7859682663773658275}
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!15 = !{i64 -6528110295079665978}
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!16 = !{i64 -6528110295079665978, i64 5747919905719679568}
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!17 = !{i64 -6528110295079665978, i64 -5753238080028016843}
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!18 = !{i64 -6528110295079665978, i64 1794685869326395337}
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!19 = !{i64 -6528110295079665978, i64 5462047985461644151}
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!20 = !{i64 1905834578520680781}
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!21 = !{i64 -4903163940066524832}
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;; After adding only the alloc node memprof metadata, we only have 4 contexts (we only
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;; match the interesting parts of the pre-update graph here).
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; DUMP: CCG before updating call stack chains:
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; DUMP: Callsite Context Graph:
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; DUMP: Node [[D1:0x[a-z0-9]+]]
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; DUMP: Versions: 1 MIB:
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; DUMP: AllocType 1 StackIds: 0, 1, 2
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; DUMP: AllocType 2 StackIds: 0, 1, 3
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; DUMP: (clone 0)
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; DUMP: AllocTypes: NotColdCold
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; DUMP: ContextIds: 1 2
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; DUMP: Node [[C:0x[a-z0-9]+]]
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; DUMP: null Call
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; DUMP: AllocTypes: NotColdCold
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; DUMP: ContextIds: 1 2 3 4
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[D1]] to Caller: [[C]] AllocTypes: NotColdCold ContextIds: 1 2
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; DUMP: Edge from Callee [[D2:0x[a-z0-9]+]] to Caller: [[C]] AllocTypes: NotColdCold ContextIds: 3 4
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; DUMP: Node [[D2]]
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; DUMP: Versions: 1 MIB:
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; DUMP: AllocType 1 StackIds: 0, 4, 3
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; DUMP: AllocType 2 StackIds: 0, 4, 5
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; DUMP: (clone 0)
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; DUMP: AllocTypes: NotColdCold
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; DUMP: ContextIds: 3 4
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;; After updating for callsite metadata, we should have duplicated the context
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;; ids coming from node A (2 and 3) 4 times, for the 4 different callers of A,
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;; and used those on new nodes for those callers. Note that while in reality
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;; we only have cold edges coming from A1 and A2 and noncold from A3 and A4,
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;; due to the pruning we have lost this information and thus end up duplicating
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;; both of A's contexts to all of the new nodes (which could result in some
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;; unnecessary cloning.
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; DUMP: CCG before cloning:
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; DUMP: Callsite Context Graph:
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; DUMP: Node [[D1]]
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; DUMP: Versions: 1 MIB:
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; DUMP: AllocType 1 StackIds: 0, 1, 2
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; DUMP: AllocType 2 StackIds: 0, 1, 3
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; DUMP: (clone 0)
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; DUMP: AllocTypes: NotColdCold
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; DUMP: ContextIds: 1 2 5 7 9 11
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; DUMP: CalleeEdges:
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[D1]] to Caller: [[C]] AllocTypes: NotColdCold ContextIds: 1 2 5 7 9 11
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; DUMP: Node [[C]]
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; DUMP: Callee: 11485875876353461977 (_Z1Db) Clones: 0 StackIds: 0 (clone 0)
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; DUMP: AllocTypes: NotColdCold
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; DUMP: ContextIds: 1 2 3 4 5 6 7 8 9 10 11 12
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[D1]] to Caller: [[C]] AllocTypes: NotColdCold ContextIds: 1 2 5 7 9 11
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; DUMP: Edge from Callee [[D2]] to Caller: [[C]] AllocTypes: NotColdCold ContextIds: 3 4 6 8 10 12
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[C]] to Caller: [[B1:0x[a-z0-9]+]] AllocTypes: NotColdCold ContextIds: 1 2 5 7 9 11
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; DUMP: Edge from Callee [[C]] to Caller: [[B2:0x[a-z0-9]+]] AllocTypes: NotColdCold ContextIds: 3 4 6 8 10 12
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; DUMP: Node [[B1]]
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; DUMP: Callee: 15062806102884567440 (_Z1Cb) Clones: 0 StackIds: 1 (clone 0)
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; DUMP: AllocTypes: NotColdCold
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; DUMP: ContextIds: 1 2 5 7 9 11
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[C]] to Caller: [[B1]] AllocTypes: NotColdCold ContextIds: 1 2 5 7 9 11
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[B1]] to Caller: [[E:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1
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; DUMP: Edge from Callee [[B1]] to Caller: [[A2:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 5
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; DUMP: Edge from Callee [[B1]] to Caller: [[A3:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 7
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; DUMP: Edge from Callee [[B1]] to Caller: [[A1:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 9
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; DUMP: Edge from Callee [[B1]] to Caller: [[A4:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 11
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; DUMP: Edge from Callee [[B1]] to Caller: [[A:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 2
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; DUMP: Node [[E]]
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; DUMP: Callee: 9116113196563097487 (_Z1Bb) Clones: 0 StackIds: 2 (clone 0)
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; DUMP: AllocTypes: NotCold
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; DUMP: ContextIds: 1
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[B1]] to Caller: [[E]] AllocTypes: NotCold ContextIds: 1
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; DUMP: CallerEdges:
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; DUMP: Node [[D2]]
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; DUMP: Versions: 1 MIB:
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; DUMP: AllocType 1 StackIds: 0, 4, 3
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; DUMP: AllocType 2 StackIds: 0, 4, 5
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; DUMP: (clone 0)
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; DUMP: AllocTypes: NotColdCold
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; DUMP: ContextIds: 3 4 6 8 10 12
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; DUMP: CalleeEdges:
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[D2]] to Caller: [[C]] AllocTypes: NotColdCold ContextIds: 3 4 6 8 10 12
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||
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|
; DUMP: Node [[B2]]
|
||
|
|
; DUMP: Callee: 15062806102884567440 (_Z1Cb) Clones: 0 StackIds: 4 (clone 0)
|
||
|
|
; DUMP: AllocTypes: NotColdCold
|
||
|
|
; DUMP: ContextIds: 3 4 6 8 10 12
|
||
|
|
; DUMP: CalleeEdges:
|
||
|
|
; DUMP: Edge from Callee [[C]] to Caller: [[B2]] AllocTypes: NotColdCold ContextIds: 3 4 6 8 10 12
|
||
|
|
; DUMP: CallerEdges:
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[F:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 4
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[A2]] AllocTypes: NotCold ContextIds: 6
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[A3]] AllocTypes: NotCold ContextIds: 8
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[A1]] AllocTypes: NotCold ContextIds: 10
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[A4]] AllocTypes: NotCold ContextIds: 12
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[A]] AllocTypes: NotCold ContextIds: 3
|
||
|
|
|
||
|
|
; DUMP: Node [[F]]
|
||
|
|
; DUMP: Callee: 9116113196563097487 (_Z1Bb) Clones: 0 StackIds: 5 (clone 0)
|
||
|
|
; DUMP: AllocTypes: Cold
|
||
|
|
; DUMP: ContextIds: 4
|
||
|
|
; DUMP: CalleeEdges:
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[F]] AllocTypes: Cold ContextIds: 4
|
||
|
|
; DUMP: CallerEdges:
|
||
|
|
|
||
|
|
; DUMP: Node [[A2]]
|
||
|
|
; DUMP: Callee: 9116113196563097487 (_Z1Bb) Clones: 0 StackIds: 3, 7 (clone 0)
|
||
|
|
; DUMP: AllocTypes: NotColdCold
|
||
|
|
; DUMP: ContextIds: 5 6
|
||
|
|
; DUMP: CalleeEdges:
|
||
|
|
; DUMP: Edge from Callee [[B1]] to Caller: [[A2]] AllocTypes: Cold ContextIds: 5
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[A2]] AllocTypes: NotCold ContextIds: 6
|
||
|
|
; DUMP: CallerEdges:
|
||
|
|
|
||
|
|
; DUMP: Node [[A3]]
|
||
|
|
; DUMP: Callee: 9116113196563097487 (_Z1Bb) Clones: 0 StackIds: 3, 8 (clone 0)
|
||
|
|
; DUMP: AllocTypes: NotColdCold
|
||
|
|
; DUMP: ContextIds: 7 8
|
||
|
|
; DUMP: CalleeEdges:
|
||
|
|
; DUMP: Edge from Callee [[B1]] to Caller: [[A3]] AllocTypes: Cold ContextIds: 7
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[A3]] AllocTypes: NotCold ContextIds: 8
|
||
|
|
; DUMP: CallerEdges:
|
||
|
|
|
||
|
|
; DUMP: Node [[A1]]
|
||
|
|
; DUMP: Callee: 9116113196563097487 (_Z1Bb) Clones: 0 StackIds: 3 (clone 0)
|
||
|
|
; DUMP: AllocTypes: NotColdCold
|
||
|
|
; DUMP: ContextIds: 9 10
|
||
|
|
; DUMP: CalleeEdges:
|
||
|
|
; DUMP: Edge from Callee [[B1]] to Caller: [[A1]] AllocTypes: Cold ContextIds: 9
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[A1]] AllocTypes: NotCold ContextIds: 10
|
||
|
|
; DUMP: CallerEdges:
|
||
|
|
|
||
|
|
; DUMP: Node [[A4]]
|
||
|
|
; DUMP: Callee: 9116113196563097487 (_Z1Bb) Clones: 0 StackIds: 3, 9 (clone 0)
|
||
|
|
; DUMP: AllocTypes: NotColdCold
|
||
|
|
; DUMP: ContextIds: 11 12
|
||
|
|
; DUMP: CalleeEdges:
|
||
|
|
; DUMP: Edge from Callee [[B1]] to Caller: [[A4]] AllocTypes: Cold ContextIds: 11
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[A4]] AllocTypes: NotCold ContextIds: 12
|
||
|
|
; DUMP: CallerEdges:
|
||
|
|
|
||
|
|
; DUMP: Node [[A]]
|
||
|
|
; DUMP: Callee: 9116113196563097487 (_Z1Bb) Clones: 0 StackIds: 3, 6 (clone 0)
|
||
|
|
; DUMP: AllocTypes: NotColdCold
|
||
|
|
; DUMP: ContextIds: 2 3
|
||
|
|
; DUMP: CalleeEdges:
|
||
|
|
; DUMP: Edge from Callee [[B1]] to Caller: [[A]] AllocTypes: Cold ContextIds: 2
|
||
|
|
; DUMP: Edge from Callee [[B2]] to Caller: [[A]] AllocTypes: NotCold ContextIds: 3
|
||
|
|
; DUMP: CallerEdges:
|