[cfe-dev] Over-aligned vst1.64 and vld1.64 for arm-linux-androideabi

[Greg McGary via cfe-dev]

I am seeing clang for arm-linux-androideabi emit 16-byte-aligned vst1.64
and vld1.64, but the ABI only guarantees 8-byte alignment. Result at
runtime is SIGBUS. Since clang emits "#define __BIGGEST_ALIGNMENT__ 8", it
is aware of the ABI's maximum alignment.

clang -S shows no alignment clause in the address-register operand. I.e.,
simple [rN], not [rN:128], but disassembly shows the [rN:128]. What
controls that default alignment boundary?

G
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