forked from OSchip/llvm-project
51 lines
1.4 KiB
ArmAsm
Executable File
51 lines
1.4 KiB
ArmAsm
Executable File
# This reproduces a bug triggered by a relocation referencing a section symbol
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# plus a negative reloc. BOLT handles such cases specially, but while doing so,
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# it was failing to sign extend a negative result for the relocation (encoded
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# in the immediate operand of an LEA instruction).
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# Originally triggered by https://fossies.org/linux/glib/glib/guniprop.c
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# Line 550: const gchar *p = special_case_table + val - 0x1000000;
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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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# Delete our BB symbols so BOLT doesn't mark them as entry points
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# RUN: llvm-strip --strip-unneeded %t.o
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# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q
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# RUN: llvm-bolt %t.exe -relocs=1 -print-finalized -print-only=main -o %t.out
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# RUN: %t.out 1 2
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.text
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.globl main
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.type main, %function
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.p2align 4
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main:
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pushq %rbp
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movq %rsp, %rbp
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subq $0x18, %rsp
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cmpl $0x2, %edi
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jb .BBend
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.BB2:
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leaq .data-0x1000000, %rsi # Use a large negative addend to cause a
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# negative result to be encoded in LEA
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addq $0x1000000, %rsi # Eventually program logic compensates to get
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# a real address
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movq $2, %rbx
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xorq %rax, %rax
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movb (%rsi), %al
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addq %rbx, %rax
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movb %al, (%rsi)
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leaq mystring, %rdi
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callq puts
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.BBend:
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xorq %rax, %rax
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leaveq
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retq
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.size main, .-main
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.data
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mystring: .asciz "0 is rbx mod 10 contents in decimal\n"
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