derek.holloway
7502bf64a4
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53 lines
1.1 KiB
ArmAsm
53 lines
1.1 KiB
ArmAsm
## This reproduces issue 20 from our github repo
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## "BOLT crashes when removing unreachable BBs that are a target
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## in a JT"
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# REQUIRES: system-linux
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# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown \
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# RUN: %s -o %t.o
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# RUN: %clang %cflags -no-pie %t.o -o %t.exe
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# RUN: llvm-bolt %t.exe --relocs=0 --jump-tables=move --print-finalized \
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# RUN: -o %t.out | FileCheck %s
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# CHECK-NOT: BOLT-INFO: UCE removed {{.*}} blocks and {{.*}} bytes of code
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# CHECK: Binary Function "main"
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# CHECK: .LFT{{.*}} (2 instructions, align : 1)
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# CHECK-NEXT: 00000004: andq
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# CHECK-NEXT: 00000008: jmpq
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# CHECK-NEXT: Successors: .Ltmp{{.*}}, .Ltmp{{.*}}, .Ltmp{{.*}}, .Ltmp{{.*}}
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.text
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.globl main
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.type main, %function
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.size main, .Lend1-main
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main:
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xorq %rax, %rax
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retq
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andq $3, %rdi
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jmpq *jumptbl(,%rdi,8)
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.Lbb1:
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movl $0x1, %eax
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jmp .Lexit
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.Lbb2:
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movl $0x2, %eax
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jmp .Lexit
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.Lbb3:
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movl $0x3, %eax
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jmp .Lexit
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.Lbb4:
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movl $0x4, %eax
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.Lexit:
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retq
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.Lend1:
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.section .rodata
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.globl jumptbl
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jumptbl:
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.quad .Lbb1
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.quad .Lbb2
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.quad .Lbb3
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.quad .Lbb4
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