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TheRock/compiler/amd-llvm/bolt/test/X86/tail-duplication-pass.s
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

39 lines
1.3 KiB
ArmAsm

# REQUIRES: system-linux
# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown \
# RUN: %s -o %t.o
# RUN: link_fdata %s %t.o %t.fdata
# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q
# RUN: llvm-bolt %t.exe --data %t.fdata --reorder-blocks=ext-tsp \
# RUN: --print-finalized --tail-duplication=moderate \
# RUN: --tail-duplication-minimum-offset=1 -o %t.out | FileCheck %s
# RUN: llvm-bolt %t.exe --data %t.fdata --print-finalized \
# RUN: --tail-duplication=aggressive --tail-duplication-minimum-offset=1 \
# RUN: -o %t.out | FileCheck %s --check-prefix CHECK-NOLOOP
# FDATA: 1 main 2 1 main #.BB2# 0 10
# FDATA: 1 main 4 1 main #.BB2# 0 20
# CHECK: BOLT-INFO: tail duplication modified 1 ({{.*}}%) functions; duplicated 1 blocks (1 bytes) responsible for {{.*}} dynamic executions ({{.*}}% of all block executions)
# CHECK: BB Layout : .LBB00, .Ltail-dup0, .Ltmp0, .Ltmp1
## Check that the predecessor of Ltail-dup0 is .LBB00, not itself.
# CHECK-NOLOOP: .Ltail-dup0 (1 instructions, align : 1)
# CHECK-NOLOOP: Predecessors: .LBB00
# CHECK-NOLOOP: retq
# CHECK-NOLOOP: .Ltmp0 (1 instructions, align : 1)
.text
.globl main
.type main, %function
.size main, .Lend-main
main:
xor %eax, %eax
jmp .BB2
.BB1:
inc %rax
.BB2:
retq
# For relocations against .text
call exit
.Lend: