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Refactor confusing if for xacquire/xrelease (#1173) 

Sync with https://github.com/llvm-mirror/llvm/blob/7cdce81/lib/Target/X86/Disassembler/X86DisassemblerDecoder.cpp#L362
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vit9696 2018-06-14 01:04:20 +03:00 committed by Nguyen Anh Quynh
parent 6625328843
commit f8eae0ac15
1 changed files with 2 additions and 3 deletions
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5
arch/X86/X86DisassemblerDecoder.c
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@ -542,9 +542,8 @@ static int readPrefixes(struct InternalInstruction *insn)
* - it is followed by an xchg instruction * - it is followed by an xchg instruction
* then it should be disassembled as a xacquire/xrelease not repne/rep. * then it should be disassembled as a xacquire/xrelease not repne/rep.
*/ */
if ((byte == 0xf2 || byte == 0xf3) && if (((nextByte == 0xf0) ||
((nextByte == 0xf0) | ((nextByte & 0xfe) == 0x86 || (nextByte & 0xf8) == 0x90)))
((nextByte & 0xfe) == 0x86 || (nextByte & 0xf8) == 0x90)))
insn->xAcquireRelease = true; insn->xAcquireRelease = true;
/* /*
* Also if the byte is 0xf3, and the following condition is met: * Also if the byte is 0xf3, and the following condition is met: