;; Test callsite context graph generation for call graph with two memprof ;; contexts and multiple levels of inlining, requiring generation of new ;; fused nodes to represent the inlined sequence while matching callsite ;; nodes onto the graph. In particular this tests the case where a function ;; has inlined a callee containing an inlined callee. ;; ;; Original code looks like: ;; ;; char *bar() __attribute__((noinline)) { ;; 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. ;; ;; Both foo and baz are inlined into main, at both foo callsites. ;; We should update the graph for new fused nodes for both of those inlined ;; callsites to bar. ;; ;; Note that baz and bar are both dead due to the inlining, but have been left ;; in the input IR to ensure that the MIB call chain is matched to the longer ;; inline sequences from main. ;; ;; The IR was then reduced using llvm-reduce with the expected FileCheck input. ; 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,_Z3barv,plx \ ; RUN: -r=%t.o,_Z3bazv,plx \ ; RUN: -r=%t.o,_Z3foov,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: -o %t.out 2>&1 | FileCheck %s --check-prefix=DUMP 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 ptr @_Z3barv() { entry: %call = call ptr @_Znam(i64 0), !memprof !0, !callsite !5 ret ptr null } declare ptr @_Znam(i64) declare ptr @_Z3bazv() declare ptr @_Z3foov() define i32 @main() { delete.end5: %call.i.i = call ptr @_Z3barv(), !callsite !6 %call.i.i8 = call ptr @_Z3barv(), !callsite !7 ret i32 0 } declare void @_ZdaPv() declare i32 @sleep() !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 -5964873800580613432, i64 2732490490862098848, i64 8632435727821051414} !7 = !{i64 -5964873800580613432, i64 2732490490862098848, i64 -3421689549917153178} ; DUMP: CCG before cloning: ; DUMP: Callsite Context Graph: ; 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: 1 2 ; DUMP: CalleeEdges: ; DUMP: CallerEdges: ; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN1:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1 ; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN2:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 2 ;; This is the node synthesized for the first inlined call chain of main->foo->baz ; DUMP: Node [[MAIN1]] ; DUMP: Callee: 17377440600225628772 (_Z3barv) Clones: 0 StackIds: 0, 1, 2 (clone 0) ; DUMP: AllocTypes: NotCold ; DUMP: ContextIds: 1 ; DUMP: CalleeEdges: ; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 1 ; DUMP: CallerEdges: ;; This is the node synthesized for the second inlined call chain of main->foo->baz ; DUMP: Node [[MAIN2]] ; DUMP: Callee: 17377440600225628772 (_Z3barv) Clones: 0 StackIds: 0, 1, 3 (clone 0) ; DUMP: AllocTypes: Cold ; DUMP: ContextIds: 2 ; DUMP: CalleeEdges: ; DUMP: Edge from Callee [[BAR]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 2 ; DUMP: CallerEdges: