[LLVMdev] Emit 4-byte-displacement jump instructions instead of short one-byte-displacement jump instructions, when generating machine code, under x86_64

[Yue Chen]

Dear all,

We are working on a research project based on LLVM. I wonder if there is
any easy way to make LLVM
NOT emit short jump instructions with 1-byte-displacement, like "75 30
 JNE +30", "eb 1a   JMP +1a", etc;
instead only emit 4-byte-displacement jump instructions with 3-byte zero
paddings, like
"0f 85 30 00 00 00   JNE +30", "e9 1a 00 00 00    JMPQ +1a", etc., under
the x86_64 architecture.
Apparently, this would increase the code size.

Best regards and thanks,
Yue
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