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| author | Johnny Chen <johnny.chen@apple.com> | 2011-04-15 22:49:08 +0000 |
|---|---|---|
| committer | Johnny Chen <johnny.chen@apple.com> | 2011-04-15 22:49:08 +0000 |
| commit | 761e1e3512ebfc04df979a2185b788bd03f9e2ba (patch) | |
| tree | edbbca34da34f599b48b5d7ad3050a8fcb087c42 | |
| parent | 5ac257d738d43768a2ebd88d94555575da9f2f89 (diff) | |
| download | bcm5719-llvm-761e1e3512ebfc04df979a2185b788bd03f9e2ba.tar.gz bcm5719-llvm-761e1e3512ebfc04df979a2185b788bd03f9e2ba.zip | |
A8.6.315 VLD3 (single 3-element structure to all lanes)
The a bit must be encoded as 0.
rdar://problem/9292625
llvm-svn: 129618
| -rw-r--r-- | llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp | 6 | ||||
| -rw-r--r-- | llvm/test/MC/Disassembler/ARM/invalid-VLD3DUPd32_UPD-thumb.txt | 11 |
2 files changed, 17 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp b/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp index b7a9a8b5250..942a74b9088 100644 --- a/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp +++ b/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp @@ -2683,6 +2683,12 @@ static bool DisassembleNLdSt(MCInst &MI, unsigned Opcode, uint32_t insn, // Now we can calculate the alignment! if (a) alignment = elem * data_size; + } else { + if (a) { + // A8.6.315 VLD3 (single 3-element structure to all lanes) + // The a bit must be encoded as 0. + return false; + } } } else { // Multiple n-element structures with type encoded as Inst{11-8}. diff --git a/llvm/test/MC/Disassembler/ARM/invalid-VLD3DUPd32_UPD-thumb.txt b/llvm/test/MC/Disassembler/ARM/invalid-VLD3DUPd32_UPD-thumb.txt new file mode 100644 index 00000000000..5fd02517991 --- /dev/null +++ b/llvm/test/MC/Disassembler/ARM/invalid-VLD3DUPd32_UPD-thumb.txt @@ -0,0 +1,11 @@ +# RUN: llvm-mc --disassemble %s -triple=thumb-apple-darwin9 |& grep {invalid instruction encoding} + +# Opcode=871 Name=VLD3DUPd32_UPD Format=ARM_FORMAT_NLdSt(30) +# 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 +# ------------------------------------------------------------------------------------------------- +# | 1: 1: 1: 1| 0: 1: 0: 0| 1: 0: 1: 0| 0: 0: 1: 0| 0: 0: 1: 0| 1: 1: 1: 0| 1: 0: 0: 1| 0: 0: 1: 0| +# ------------------------------------------------------------------------------------------------- +# +# A8.6.315 VLD3 (single 3-element structure to all lanes) +# The a bit must be encoded as 0. +0xa2 0xf9 0x92 0x2e |
