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liblzma: Fix a comment in the RISC-V filter.
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1 changed files with 2 additions and 2 deletions
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@ -320,11 +320,11 @@ AUIPC with rd == x0
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// The left-hand side takes care of (1) and (2).
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// (a) The lowest 7 bits are already known to be AUIPC so subtracting 0x17
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// makes those bits zeros.
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// (b) If AUIPC rd equals x2, subtracting 0x10 makes bits [11:7] zeros.
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// (b) If AUIPC rd equals x2, subtracting 0x100 makes bits [11:7] zeros.
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// If rd doesn't equal x2, then there will be at least one non-zero bit
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// and the next step (c) is irrelevant.
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// (c) If the lowest two opcode bits of the packed inst2 are set in [13:12],
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// then subtracting 0x300 will make those bits zeros. Otherwise there
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// then subtracting 0x3000 will make those bits zeros. Otherwise there
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// will be at least one non-zero bit.
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//
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// The shift by 18 removes the high bits from the final '>=' comparison and
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