mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-24 09:29:42 +00:00
279b5504a3
Summary: Currently an error is thrown if bundle alignment mode is set more than once per module (either via the API or the .bundle_align_mode directive). This change allows setting it multiple times as long as the alignment doesn't change. Also nested bundle_lock groups are currently not allowed. This change allows them, with the effect that the group stays open until all nests are exited, and if any of the bundle_lock directives has the align_to_end flag, the group becomes align_to_end. These changes make the bundle aligment simpler to use in the compiler, and also better match the corresponding support in GNU as. Reviewers: jvoung, eliben Differential Revision: http://reviews.llvm.org/D5801 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219811 91177308-0d34-0410-b5e6-96231b3b80d8
68 lines
1.4 KiB
ArmAsm
68 lines
1.4 KiB
ArmAsm
# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %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
|
|
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
|
|
# CHECK-NEXT: 15: callq
|
|
|
|
.p2align 4
|
|
# CHECK-LABEL: bar
|
|
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
|
|
# CHECK-NEXT: 3b: callq
|
|
|
|
# CHECK-LABEL: baz
|
|
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
|
|
# CHECK-NEXT: 5b: callq
|
|
|
|
# CHECK-LABEL: quux
|
|
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
|
|
# CHECK-NEXT: 75: callq
|