| ;; Test to make sure that missing tail call frames in memprof profiles are |
| ;; identified and cloned as needed for regular LTO. |
| |
| ;; -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,_Z3barv,plx \ |
| ; RUN: -r=%t.o,_Z3bazv,plx \ |
| ; RUN: -r=%t.o,_Z3foov,plx \ |
| ; RUN: -r=%t.o,main,plx \ |
| ; RUN: -r=%t.o,_Znam, \ |
| ; RUN: -stats -save-temps \ |
| ; RUN: -o %t.out 2>&1 | FileCheck %s --check-prefix=STATS |
| |
| ; 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,_Z3barv,plx \ |
| ; RUN: -r=%t.o,_Z3bazv,plx \ |
| ; RUN: -r=%t.o,_Z3foov,plx \ |
| ; RUN: -r=%t.o,main,plx \ |
| ; RUN: -r=%t.o,_Znam, \ |
| ; RUN: -stats \ |
| ; RUN: -o %t2.out 2>&1 | FileCheck %s --check-prefix=STATS |
| |
| ;; Run ThinLTO backend |
| ; RUN: opt -passes=memprof-context-disambiguation \ |
| ; RUN: -memprof-import-summary=%t.o.thinlto.bc \ |
| ; RUN: -stats %t.o -S 2>&1 | FileCheck %s --check-prefix=IR |
| |
| ; STATS: 2 memprof-context-disambiguation - Number of profiled callees found via tail calls |
| ; STATS: 4 memprof-context-disambiguation - Aggregate depth of profiled callees found via tail calls |
| ; STATS: 2 memprof-context-disambiguation - Maximum depth of profiled callees found via tail calls |
| |
| source_filename = "memprof-tailcall.cc" |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Function Attrs: noinline |
| ; IR-LABEL: @_Z3barv() |
| define ptr @_Z3barv() local_unnamed_addr #0 { |
| entry: |
| ; IR: call {{.*}} @_Znam(i64 10) #[[NOTCOLD:[0-9]+]] |
| %call = tail call ptr @_Znam(i64 10) #2, !memprof !0, !callsite !5 |
| ret ptr %call |
| } |
| |
| ; Function Attrs: nobuiltin allocsize(0) |
| declare ptr @_Znam(i64) #1 |
| |
| ; Function Attrs: noinline |
| ; IR-LABEL: @_Z3bazv() |
| define ptr @_Z3bazv() #0 { |
| entry: |
| ; IR: call ptr @_Z3barv() |
| %call = tail call ptr @_Z3barv() |
| ret ptr %call |
| } |
| |
| ; Function Attrs: noinline |
| ; IR-LABEL: @_Z3foov() |
| define ptr @_Z3foov() #0 { |
| entry: |
| ; IR: call ptr @_Z3bazv() |
| %call = tail call ptr @_Z3bazv() |
| ret ptr %call |
| } |
| |
| ; Function Attrs: noinline |
| ; IR-LABEL: @main() |
| define i32 @main() #0 { |
| ;; The first call to foo is part of a cold context, and should use the |
| ;; original functions. |
| ; IR: call ptr @_Z3foov() |
| %call = tail call ptr @_Z3foov(), !callsite !6 |
| ;; The second call to foo is part of a cold context, and should call the |
| ;; cloned functions. |
| ; IR: call ptr @_Z3foov.memprof.1() |
| %call1 = tail call ptr @_Z3foov(), !callsite !7 |
| ret i32 0 |
| } |
| |
| ; IR-LABEL: @_Z3barv.memprof.1() |
| ; IR: call {{.*}} @_Znam(i64 10) #[[COLD:[0-9]+]] |
| ; IR-LABEL: @_Z3bazv.memprof.1() |
| ; IR: call ptr @_Z3barv.memprof.1() |
| ; IR-LABEL: @_Z3foov.memprof.1() |
| ; IR: call ptr @_Z3bazv.memprof.1() |
| |
| ; IR: attributes #[[NOTCOLD]] = { builtin allocsize(0) "memprof"="notcold" } |
| ; IR: attributes #[[COLD]] = { builtin allocsize(0) "memprof"="cold" } |
| |
| attributes #0 = { noinline } |
| attributes #1 = { nobuiltin allocsize(0) } |
| attributes #2 = { builtin allocsize(0) } |
| |
| !0 = !{!1, !3} |
| !1 = !{!2, !"notcold"} |
| !2 = !{i64 3186456655321080972, i64 8632435727821051414} |
| !3 = !{!4, !"cold"} |
| !4 = !{i64 3186456655321080972, i64 -3421689549917153178} |
| !5 = !{i64 3186456655321080972} |
| !6 = !{i64 8632435727821051414} |
| !7 = !{i64 -3421689549917153178} |