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| author | Oliver Stannard <oliver.stannard@linaro.org> | 2019-09-09 08:50:28 +0000 |
|---|---|---|
| committer | Oliver Stannard <oliver.stannard@linaro.org> | 2019-09-09 08:50:28 +0000 |
| commit | 6b9aedaec6815b819c626c5ba8d6fbbff9c6028c (patch) | |
| tree | 8678fa46611e8e84ffead2d512539a9d115a0567 /llvm/lib/Target/ARM/Disassembler | |
| parent | ad3841fcae6392cb315e2ab39e6d49887d5ef449 (diff) | |
| download | bcm5719-llvm-6b9aedaec6815b819c626c5ba8d6fbbff9c6028c.tar.gz bcm5719-llvm-6b9aedaec6815b819c626c5ba8d6fbbff9c6028c.zip | |
[ARM][MVE] Decoding of uqrshl and sqrshl accepts unpredictable encodings
Specify the Unpredictable bits, and return softfails when appropriate.
Patch by Mark Murray!
Differential revision: https://reviews.llvm.org/D66939
llvm-svn: 371374
Diffstat (limited to 'llvm/lib/Target/ARM/Disassembler')
| -rw-r--r-- | llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp index e027fd6906e..eabc26d05f4 100644 --- a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp +++ b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp @@ -6483,6 +6483,12 @@ static DecodeStatus DecodeMVEOverlappingLongShift( if (!Check(S, DecoderGPRRegisterClass(Inst, Rm, Address, Decoder))) return MCDisassembler::Fail; + if (fieldFromInstruction (Insn, 6, 3) != 4) + return MCDisassembler::SoftFail; + + if (Rda == Rm) + return MCDisassembler::SoftFail; + return S; } |
