xref: /aosp_15_r20/external/llvm/test/MC/X86/AlignedBundling/relax-in-bundle-group.s (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - \
2*9880d681SAndroid Build Coastguard Worker# RUN:   | llvm-objdump -disassemble - | FileCheck %s
3*9880d681SAndroid Build Coastguard Worker# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mc-relax-all %s -o - \
4*9880d681SAndroid Build Coastguard Worker# RUN:   | llvm-objdump -disassemble - | FileCheck %s
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Worker# Test that instructions inside bundle-locked groups are relaxed even if their
7*9880d681SAndroid Build Coastguard Worker# fixup is short enough not to warrant relaxation on its own.
8*9880d681SAndroid Build Coastguard Worker
9*9880d681SAndroid Build Coastguard Worker  .text
10*9880d681SAndroid Build Coastguard Workerfoo:
11*9880d681SAndroid Build Coastguard Worker  .bundle_align_mode 4
12*9880d681SAndroid Build Coastguard Worker  pushq   %rbp
13*9880d681SAndroid Build Coastguard Worker
14*9880d681SAndroid Build Coastguard Worker  movl    %edi, %ebx
15*9880d681SAndroid Build Coastguard Worker  callq   bar
16*9880d681SAndroid Build Coastguard Worker  movl    %eax, %r14d
17*9880d681SAndroid Build Coastguard Worker  imull   $17, %ebx, %ebp
18*9880d681SAndroid Build Coastguard Worker  movl    %ebx, %edi
19*9880d681SAndroid Build Coastguard Worker  callq   bar
20*9880d681SAndroid Build Coastguard Worker  cmpl    %r14d, %ebp
21*9880d681SAndroid Build Coastguard Worker  .bundle_lock
22*9880d681SAndroid Build Coastguard Worker
23*9880d681SAndroid Build Coastguard Worker  jle     .L_ELSE
24*9880d681SAndroid Build Coastguard Worker# This group would've started at 0x18 and is too long, so a chunky NOP padding
25*9880d681SAndroid Build Coastguard Worker# is inserted to push it to 0x20.
26*9880d681SAndroid Build Coastguard Worker# CHECK: 18: {{[a-f0-9 ]+}} nopl
27*9880d681SAndroid Build Coastguard Worker
28*9880d681SAndroid Build Coastguard Worker# The long encoding for JLE should be used here even though its target is close
29*9880d681SAndroid Build Coastguard Worker# CHECK-NEXT: 20: 0f 8e
30*9880d681SAndroid Build Coastguard Worker
31*9880d681SAndroid Build Coastguard Worker  addl    %ebp, %eax
32*9880d681SAndroid Build Coastguard Worker
33*9880d681SAndroid Build Coastguard Worker  jmp     .L_RET
34*9880d681SAndroid Build Coastguard Worker# Same for the JMP
35*9880d681SAndroid Build Coastguard Worker# CHECK: 28: e9
36*9880d681SAndroid Build Coastguard Worker
37*9880d681SAndroid Build Coastguard Worker  .bundle_unlock
38*9880d681SAndroid Build Coastguard Worker
39*9880d681SAndroid Build Coastguard Worker.L_ELSE:
40*9880d681SAndroid Build Coastguard Worker  imull   %ebx, %eax
41*9880d681SAndroid Build Coastguard Worker.L_RET:
42*9880d681SAndroid Build Coastguard Worker
43*9880d681SAndroid Build Coastguard Worker  popq    %rbx
44*9880d681SAndroid Build Coastguard Worker
45