[PATCH] D114581: [RISCV] Fix a crash in decoding LMUL in VTYPE

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


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Comment at: llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp:418
+// of such corner cases.
+static bool isIllegalInstruction(unsigned InstCode) {
+  if ((InstCode & 0x7f) == 0x57 && (InstCode & 0x7000) == 0x7000 &&
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I don't think this is the right way to do this. I think the right way is to change the DecoderMethod for VTypeIOp to a new function instead of `decodeUImmOperand<11>`. The new decoder function can return MCDisassembler::Fail;


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  https://reviews.llvm.org/D114581/new/

https://reviews.llvm.org/D114581