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146 lines
2.5 KiB
ArmAsm
146 lines
2.5 KiB
ArmAsm
# RUN: llvm-mc -filetype=obj -triple x86_64 --x86-align-branch-boundary=32 --x86-align-branch=call+jmp+indirect+ret+jcc %s | llvm-objdump -d --no-show-raw-insn - | FileCheck %s
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# These tests are checking the basic cases for each instructions, and a
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# bit of the alignment checking logic itself. Fused instruction cases are
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# excluded, as are details of argument parsing.
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# instruction sizes for reference:
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# callq is 5 bytes long
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# int3 is 1 byte
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# jmp <near-label> is 2 bytes
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# jmp <far-label> is 5 bytes
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# ret N is 2 bytes
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# Next couple tests are checking the edge cases on the alignment computation
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.text
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# CHECK: <test1>:
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# CHECK: 20: callq
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.globl test1
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.p2align 5
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test1:
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.rept 29
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int3
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.endr
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callq bar
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# CHECK: <test2>:
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# CHECK: 60: callq
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.globl test2
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.p2align 5
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test2:
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.rept 31
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int3
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.endr
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callq bar
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# CHECK: <test3>:
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# CHECK: a0: callq
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.globl test3
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.p2align 5
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test3:
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.rept 27
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int3
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.endr
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callq bar
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# next couple check instruction type coverage
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# CHECK: <test_jmp>:
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# CHECK: e0: jmp
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.globl test_jmp
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.p2align 5
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test_jmp:
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.rept 31
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int3
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.endr
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jmp bar
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# CHECK: <test_ret>:
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# CHECK: 120: retq
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.globl test_ret
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.p2align 5
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test_ret:
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.rept 31
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int3
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.endr
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retq $0
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# check a case with a relaxable instruction
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# CHECK: <test_jmp_far>:
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# CHECK: 160: jmp
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.globl test_jmp_far
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.p2align 5
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test_jmp_far:
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.rept 31
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int3
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.endr
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jmp baz
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# CHECK: <test_jcc>:
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# CHECK: 1a0: jne
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.globl test_jcc
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.p2align 5
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test_jcc:
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.rept 31
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int3
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.endr
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jne bar
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# CHECK: <test_indirect>:
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# CHECK: 1e0: jmp
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.globl test_indirect
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.p2align 5
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test_indirect:
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.rept 31
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int3
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.endr
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jmpq *(%rax)
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.p2align 4
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.type bar,@function
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bar:
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retq
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# This case looks really tempting to pad, but doing so for the call causes
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# the jmp to be misaligned.
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# CHECK: <test_pad_via_relax_neg1>:
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# CHECK: 200: int3
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# CHECK: 21a: testq
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# CHECK: 21d: jne
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# CHECK: 21f: nop
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# CHECK: 220: callq
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.global test_pad_via_relax_neg1
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.p2align 5
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test_pad_via_relax_neg1:
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.rept 26
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int3
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.endr
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testq %rax, %rax
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jnz bar
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callq bar
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# Same as previous, but without fusion
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# CHECK: <test_pad_via_relax_neg2>:
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# CHECK: 240: int3
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# CHECK: 25d: jmp
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# CHECK: 25f: nop
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# CHECK: 260: callq
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.global test_pad_via_relax_neg2
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.p2align 5
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test_pad_via_relax_neg2:
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.rept 29
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int3
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.endr
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jmp bar2
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callq bar2
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bar2:
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.section "unknown"
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.p2align 4
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.type baz,@function
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baz:
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retq
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