15904836bSspupyrev# REQUIRES: system-linux 25904836bSspupyrev 35904836bSspupyrev# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown \ 45904836bSspupyrev# RUN: %s -o %t.o 55904836bSspupyrev# RUN: link_fdata %s %t.o %t.fdata 65904836bSspupyrev# RUN: link_fdata %s %t.o %t.fdata2 "FDATA2" 75904836bSspupyrev# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q 8d648aa1bSMaksim Panchenko# RUN: llvm-bolt %t.exe --data %t.fdata --reorder-blocks=none \ 9d648aa1bSMaksim Panchenko# RUN: --print-finalized --tail-duplication=cache -o %t.out | FileCheck %s 10d648aa1bSMaksim Panchenko# RUN: llvm-bolt %t.exe --data %t.fdata2 --reorder-blocks=none \ 11d648aa1bSMaksim Panchenko# RUN: --print-finalized --tail-duplication=cache -o %t.out2 \ 12d648aa1bSMaksim Panchenko# RUN: | FileCheck --check-prefix="CHECK2" %s 135904836bSspupyrev 14*11791ae7SSayhaan Siddiqui## A test where the tail is duplicated to eliminate an unconditional jump 155904836bSspupyrev# FDATA: 1 main #.BB0_br# 1 main #.BB4# 0 100 165904836bSspupyrev# FDATA: 1 main #.BB0_br# 1 main #.BB1# 0 100 175904836bSspupyrev# FDATA: 1 main #.BB1_br# 1 main #.BB3# 0 50 185904836bSspupyrev# FDATA: 1 main #.BB1_br# 1 main #.BB2# 0 50 195904836bSspupyrev# FDATA: 1 main #.BB3_br# 1 main #.BB2# 0 50 205904836bSspupyrev# CHECK: BOLT-INFO: tail duplication modified 1 ({{.*}}%) functions; duplicated 1 blocks (13 bytes) responsible for 50 dynamic executions ({{.*}}% of all block executions) 215904836bSspupyrev# CHECK: BB Layout : .LBB00, .Ltmp0, .Ltmp1, .Ltmp2, .Ltmp3, .Ltmp4, .Ltmp5, .Ltail-dup0, .Ltmp6 225904836bSspupyrev 23*11791ae7SSayhaan Siddiqui## A test where the tail is not duplicated due to the cache score 245904836bSspupyrev# FDATA2: 1 main #.BB0_br# 1 main #.BB4# 0 100 255904836bSspupyrev# FDATA2: 1 main #.BB0_br# 1 main #.BB1# 0 2 265904836bSspupyrev# FDATA2: 1 main #.BB1_br# 1 main #.BB3# 0 1 275904836bSspupyrev# FDATA2: 1 main #.BB1_br# 1 main #.BB2# 0 1 285904836bSspupyrev# FDATA2: 1 main #.BB3_br# 1 main #.BB2# 0 1 295904836bSspupyrev# CHECK2: BOLT-INFO: tail duplication modified 0 (0.00%) functions; duplicated 0 blocks (0 bytes) responsible for 0 dynamic executions (0.00% of all block executions) 305904836bSspupyrev# CHECK2: BB Layout : .LBB00, .Ltmp0, .Ltmp1, .Ltmp2, .Ltmp3, .Ltmp4, .Ltmp5, .Ltmp6 315904836bSspupyrev 325904836bSspupyrev .text 335904836bSspupyrev .globl main 345904836bSspupyrev .type main, %function 355904836bSspupyrev .size main, .Lend-main 365904836bSspupyrevmain: 375904836bSspupyrev.BB0: 385904836bSspupyrev xor %eax, %eax 395904836bSspupyrev cmpl %eax, %ebx 405904836bSspupyrev.BB0_br: 415904836bSspupyrev je .BB4 425904836bSspupyrev.BB1: 435904836bSspupyrev inc %rax 445904836bSspupyrev.BB1_br: 455904836bSspupyrev je .BB3 465904836bSspupyrev.BB2: 475904836bSspupyrev inc %rax 485904836bSspupyrev inc %rax 495904836bSspupyrev inc %rax 505904836bSspupyrev inc %rax 515904836bSspupyrev retq 525904836bSspupyrev.BB3: 535904836bSspupyrev inc %rax 545904836bSspupyrev.BB3_br: 555904836bSspupyrev jmp .BB2 565904836bSspupyrev.BB4: 575904836bSspupyrev retq 585904836bSspupyrev# For relocations against .text 595904836bSspupyrev call exit 605904836bSspupyrev.Lend: 61