third_party/llvm-7.0/llvm/test/MC/X86/AlignedBundling/nesting.s

# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - \
# RUN:   | llvm-objdump -disassemble -no-show-raw-insn - | FileCheck %s
# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mc-relax-all %s -o - \
# RUN:   | llvm-objdump -disassemble -no-show-raw-insn - | FileCheck %s

# Will be bundle-aligning to 16 byte boundaries
  .bundle_align_mode 4
  .text
# CHECK-LABEL: foo:
.type   foo,@function
foo:
# Test that bundle alignment mode can be set more than once.
  .bundle_align_mode 4
# Each of these callq instructions is 5 bytes long
  callq bar
  callq bar
  .bundle_lock
  .bundle_lock
  callq bar
  callq bar     
  .bundle_unlock
  .bundle_unlock
# CHECK:      10: callq {{.*}} <bar>
# CHECK-NEXT: 15: callq {{.*}} <bar>

  .p2align 4
# CHECK-LABEL: bar:
.type   bar,@function
bar:
  callq foo
  callq foo
# Check that the callqs get bundled together, and that the whole group is
# align_to_end
  .bundle_lock 
  callq bar
  .bundle_lock align_to_end
  callq bar
  .bundle_unlock
  .bundle_unlock
# CHECK:      36: callq {{.*}} <bar>
# CHECK-NEXT: 3b: callq {{.*}} <bar>

# CHECK-LABEL: baz:
.type   baz,@function
baz:
  callq foo
  callq foo
# Check that the callqs get bundled together, and that the whole group is
# align_to_end (with the outer directive marked align_to_end)
  .bundle_lock align_to_end
  callq bar
  .bundle_lock
  callq bar
  .bundle_unlock
  .bundle_unlock
# CHECK:      56: callq {{.*}} <bar>
# CHECK-NEXT: 5b: callq {{.*}} <bar>

# CHECK-LABEL: quux
.type   quux,@function
quux:
  callq bar
  callq bar
  .bundle_lock
  .bundle_lock
  callq bar
  .bundle_unlock
  callq bar     
  .bundle_unlock
# Check that the calls are bundled together when the second one is after the
# inner nest is closed.
# CHECK:      70: callq {{.*}} <bar>
# CHECK-NEXT: 75: callq {{.*}} <bar>