https://llvm.org/bugs/show_bug.cgi?id=13275
Renato Golin <renato.go...@linaro.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |renato.go...@linaro.org
Resolution|--- |INVALID
--- Comment #2 from Renato Golin <renato.go...@linaro.org> ---
Funny enough, GAS is now perfectly ok with the syntax, and throws errors if we
use 64:
$ arm-none-eabi-as -march=armv7-a -mcpu=cortex-a9 -mfpu=neon -mfloat-abi=hard
bar.s
bar.s: Assembler messages:
bar.s:30: Error: unsupported alignment for instruction -- `vld1.16
{d16[0]},[r1:64]'
bar.s:31: Error: unsupported alignment for instruction -- `vld1.16
{d17[0]},[r0:64]'
While LLVM-MC seems to be on the same page:
$ echo "vld1.16{d16[0]}, [r1:64]" | llvm-mc -triple=armv7-a-linux-gnueabihf
-mcpu=cortex-a9 -show-encoding
.text
<stdin>:1:22: error: alignment must be 16 or omitted
vld1.16{d16[0]}, [r1:64]
^
Even though the ARM ARM (A8.8.320) seems to imply it should be in bits, both
tools want in bytes, and identical to the element size (which makes some
sense).
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