# 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: 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 # In the second test, we have a label which is expected to be bound to the # end of the call. For instance, we want the to associate some data with # the return address of the call. # CHECK: labeled_call_test2: # CHECK: 5a: callq # CHECK: 5f: nop # CHECK: 60 label_after # CHECK: 60: jmp .globl labeled_call_test2 .p2align 5 labeled_call_test2: .rept 26 int3 .endr callq bar label_after: jmp bar # Our third 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: implicit_null_check: # CHECK: 9f fault_addr # CHECK: 9f: nop # CHECK: a0: 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