[Bug gas/28078] arm: fails to build when using armv8 neon with dotprod extension

[happyalu at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=28078

--- Comment #2 from Alok Parlikar <happyalu at gmail dot com> ---
Ah. Thanks, Tamar.

Doing the same as you suggested with binutils 2.36.1 gives:

arm-unknown-linux-musleabihf-as -march=armv8.2-a+dotprod -mfpu=auto  test.s
Assembler messages:
Error: unknown floating point format `auto'

Error: unrecognized option -mfpu=auto

Is the "auto" option added in a later release?

Also, in the case when gcc is directly calling the assembler, trying:

arm-unknown-linux-musleabihf-gcc -march=armv8.2-a+dotprod -mfpu=auto test.c

this works, but still calls as with -mfpu=neon-fp-armv8

Am I doing something wrong?

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