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1# In this test case, the symbol that represents the end of a table2# in .rodata is being colocated with the start of a jump table from3# another function, and BOLT moves that jump table. This should not4# cause the symbol representing the end of the table to be moved as5# well.6# Bug reported in https://github.com/llvm/llvm-project/issues/550047 8# REQUIRES: system-linux9 10# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %s -o %t.o11# RUN: llvm-strip --strip-unneeded %t.o12# RUN: %clang %cflags -no-pie -nostartfiles -nostdlib -lc %t.o -o %t.exe -Wl,-q13 14# RUN: llvm-bolt %t.exe -o %t.exe.bolt --relocs=1 --lite=0 \15# RUN: --reorder-blocks=reverse -jump-tables=move16 17# RUN: %t.exe.bolt 1 2 318 19 .file "jt-symbol-disambiguation.s"20 .text21 22# ----23# Func foo contains a jump table whose start is colocated with a24# symbol marking the end of a data table25# ----26 .globl foo27 .type foo, @function28foo:29 .cfi_startproc30 xor %rax,%rax31 and $0x3,%rdi32 leaq .JT1(%rip), %rax33 movslq (%rax, %rdi, 4), %rdi34 addq %rax, %rdi35 jmpq *%rdi36.LBB1:37 movl $0x1,%eax38 jmp .LBB539.LBB2:40 movl $0x2,%eax41 jmp .LBB542.LBB3:43 movl $0x3,%eax44 jmp .LBB545.LBB4:46 movl $0x4,%eax47.LBB5:48 retq49 .cfi_endproc50 .size foo, .-foo51 52# ----53# Func _start scans a table using begin/end pointers. End pointer is colocated54# with the start of a jump table of function foo. When that jump55# table moves, end pointer in _start should not be affected.56# ----57 .globl _start58 .type _start, @function59_start:60 .cfi_startproc61 movq (%rsp), %rdi62 callq foo63 leaq .start_of_table(%rip), %rsi # iterator64 leaq .end_of_table(%rip), %rdi # iterator end65.LBB6:66 cmpq %rsi, %rdi67 je .LBB768 movq (%rsi), %rbx69 leaq 8(%rsi), %rsi # ++iterator70 jmp .LBB671.LBB7:72 xor %rdi, %rdi73 callq exit@PLT74 .cfi_endproc75 .size _start, .-_start76 77# ----78# Data section79# ----80 .section .rodata,"a",@progbits81 .p2align 382.start_of_table:83 .quad 12384 .quad 45685 .quad 78986.end_of_table:87.JT1:88 .long .LBB1 - .JT189 .long .LBB2 - .JT190 .long .LBB3 - .JT191 .long .LBB4 - .JT192