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https://github.com/c64scene-ar/llvm-6502.git
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054db7df5b
Summary: When instruction bundling is enabled and the -mc-relax-all flag is set, we can write bundle padding directly into fragments and avoid creating large number of fragments significantly reducing LLVM MC memory usage. Test Plan: Regression test attached Reviewers: eliben Subscribers: jfb, mseaborn Differential Revision: http://reviews.llvm.org/D8072 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234714 91177308-0d34-0410-b5e6-96231b3b80d8
70 lines
1.6 KiB
ArmAsm
70 lines
1.6 KiB
ArmAsm
# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - \
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# RUN: | llvm-objdump -disassemble -no-show-raw-insn - | FileCheck %s
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# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu -mc-relax-all %s -o - \
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# RUN: | llvm-objdump -disassemble -no-show-raw-insn - | FileCheck %s
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# Will be bundle-aligning to 16 byte boundaries
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.bundle_align_mode 4
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.text
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# CHECK-LABEL: foo
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foo:
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# Test that bundle alignment mode can be set more than once.
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.bundle_align_mode 4
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# Each of these callq instructions is 5 bytes long
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callq bar
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callq bar
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.bundle_lock
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.bundle_lock
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callq bar
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callq bar
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.bundle_unlock
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.bundle_unlock
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# CHECK: 10: callq
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# CHECK-NEXT: 15: callq
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.p2align 4
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# CHECK-LABEL: bar
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bar:
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callq foo
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callq foo
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# Check that the callqs get bundled together, and that the whole group is
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# align_to_end
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.bundle_lock
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callq bar
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.bundle_lock align_to_end
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callq bar
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.bundle_unlock
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.bundle_unlock
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# CHECK: 36: callq
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# CHECK-NEXT: 3b: callq
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# CHECK-LABEL: baz
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baz:
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callq foo
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callq foo
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# Check that the callqs get bundled together, and that the whole group is
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# align_to_end (with the outer directive marked align_to_end)
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.bundle_lock align_to_end
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callq bar
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.bundle_lock
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callq bar
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.bundle_unlock
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.bundle_unlock
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# CHECK: 56: callq
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# CHECK-NEXT: 5b: callq
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# CHECK-LABEL: quux
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quux:
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callq bar
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callq bar
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.bundle_lock
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.bundle_lock
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callq bar
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.bundle_unlock
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callq bar
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.bundle_unlock
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# Check that the calls are bundled together when the second one is after the
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# inner nest is closed.
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# CHECK: 70: callq
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# CHECK-NEXT: 75: callq
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