forked from OSchip/llvm-project
48 lines
1.4 KiB
ArmAsm
48 lines
1.4 KiB
ArmAsm
# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu --x86-align-branch-boundary=32 --x86-align-branch=call+jmp+indirect+ret+jcc+fused %s | llvm-objdump -d --no-show-raw-insn - | FileCheck %s
|
|
|
|
# This file includes cases which are problematic to apply automatic padding
|
|
# in the assembler. These are the examples brought up in review and
|
|
# discussion which motivate the need for a assembler directive to
|
|
# selectively enable/disable.
|
|
# FIXME: the checks are checking current *incorrect* behavior
|
|
|
|
.text
|
|
|
|
# In the first test, we have a label which is expected to be bound to the
|
|
# start of the call. For instance, we want to associate a fault on the call
|
|
# target with some bit of higher level sementic.
|
|
# CHECK-LABEL: <labeled_call_test1>:
|
|
# CHECK: 1f <label_before>:
|
|
# CHECK: 1f: nop
|
|
# CHECK: 20: callq
|
|
.globl labeled_call_test1
|
|
.p2align 5
|
|
labeled_call_test1:
|
|
.rept 31
|
|
int3
|
|
.endr
|
|
label_before:
|
|
callq bar
|
|
|
|
# Our second test is like the first w/a labeled fault, but specifically to
|
|
# a fused memory comparison. This is the form produced by implicit null
|
|
# checks for instance.
|
|
# CHECK-LABEL: <implicit_null_check>:
|
|
# CHECK: 5f <fault_addr>:
|
|
# CHECK: 5f: nop
|
|
# CHECK: 60: cmpq
|
|
.globl implicit_null_check
|
|
.p2align 5
|
|
implicit_null_check:
|
|
.rept 31
|
|
int3
|
|
.endr
|
|
fault_addr:
|
|
cmpq (%rsi), %rdi
|
|
jne bar
|
|
|
|
.p2align 4
|
|
.type bar,@function
|
|
bar:
|
|
retq
|