File: pad-align-to-bundle-end.s

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llvm-toolchain-19 1%3A19.1.7-3
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# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mcpu=pentiumpro %s -o - \
# RUN:   | llvm-objdump -d --no-show-raw-insn - | FileCheck %s
# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mcpu=pentiumpro -mc-relax-all %s -o - \
# RUN:   | llvm-objdump -d --no-show-raw-insn - | FileCheck %s

# Test some variations of padding to the end of a bundle.

  .text
foo:
  .bundle_align_mode 4

# Each of these callq instructions is 5 bytes long
  callq   bar
  callq   bar
  .bundle_lock align_to_end
  callq   bar
  .bundle_unlock
# To align this group to a bundle end, we need a 1-byte NOP.
# CHECK:        a:  nop
# CHECK-NEXT:   b: callq

  callq   bar
  callq   bar
  .bundle_lock align_to_end
  callq   bar
  callq   bar
  .bundle_unlock
# Here we have to pad until the end of the *next* boundary because
# otherwise the group crosses a boundary.
# CHECK:      1a: nop
# The nop sequence may be implemented as one instruction or many, but if
# it's one instruction, that instruction cannot itself cross the boundary.
# CHECK:      20: nop
# CHECK-NEXT: 26: callq
# CHECK-NEXT: 2b: callq