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vfpv3
2012 May 10
0
[LLVMdev] MC Hammer Test results
...t the instruction
selection phase.
[bug 5] echo 0x03 0x0b 0x80 0xec | ./llvm-mc -triple armv7 --show-inst
--show-encoding --disassemble
The bitpattern is decoding as VSTMIA r0, {d0} when it should decode to FSTMIAX
r0, {d0}
These instructions are a bit of a curiosity in that they are pre-ARMv6 (VFPv1)
instruction mnemonics which were not superseded by UAL-style V* mnemonics. They
still exist in VFPv4 but their use is deprecated. Any VSTM's with odd numbered
imm8 fields (bottom 8 bits) are the old-style F* encodings, and the encoding i
for the immediate is different.
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