[Bug libgcc/106442] New: Build time error "vadd.i32 q3,q3,q0'" in case of -mcpu=cortex-m55+nofp+nomve.fp

[Bug libgcc/106442] New: Build time error "vadd.i32 q3,q3,q0'" in case of -mcpu=cortex-m55+nofp+nomve.fp

[sherry.zhang2 at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106442

            Bug ID: 106442
           Summary: Build time error "vadd.i32 q3,q3,q0'" in case of
                    -mcpu=cortex-m55+nofp+nomve.fp
           Product: gcc
           Version: 11.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libgcc
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sherry.zhang2 at arm dot com
  Target Milestone: ---

With -mcpu=cortex-m55+nofp+nomve.fp configuration,
arm-none-eabi-gcc 11.2.1 reports the following error for the source assembly
code " vadd.i32    q3, q3, q0 \n":
/tmp/ccKsPl0U.s: Assembler messages:
/tmp/ccKsPl0U.s:100: Error: selected FPU does not support instruction --
`vadd.i32 q3,q3,q0'.

vadd should be supported on cortex-m55 in the case of mve-I enabled according
to the Arm®v8-M Architecture Reference Manual.

[Bug target/106442] Build time error "vadd.i32 q3, q3, q0'" in case of -mcpu=cortex-m55+nofp+nomve.fp

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106442

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c                           |target

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This might be a binutils bug.
Can you provide the exact command you are using to invoke gcc and provide the
source you are using? Also it would be helpful if you add -v to the gcc command
to see how as is being invoked.

[Bug target/106442] Build time error "vadd.i32 q3, q3, q0'" in case of -mcpu=cortex-m55+nofp+nomve.fp

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106442

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2022-07-26
     Ever confirmed|0                           |1

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note with nofp, you turned off the fp so it depends on if gcc is generating the
instruction or you are using inline asm or you wrote a .s file.

So we need to know the answers to the questions in comment #1.

[Bug target/106442] Build time error "vadd.i32 q3, q3, q0'" in case of -mcpu=cortex-m55+nofp+nomve.fp

[sherry.zhang2 at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106442

--- Comment #3 from sherry.zhang2 at arm dot com ---
Created attachment 53355
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53355&action=edit
C Source code

[Bug target/106442] Build time error "vadd.i32 q3, q3, q0'" in case of -mcpu=cortex-m55+nofp+nomve.fp

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106442

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
A picture is not the source.
But this looks more like a bug in either your inline-asm or how you invoke gcc.

[Bug target/106442] Build time error "vadd.i32 q3, q3, q0'" in case of -mcpu=cortex-m55+nofp+nomve.fp

[sherry.zhang2 at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106442

--- Comment #5 from sherry.zhang2 at arm dot com ---
(In reply to Andrew Pinski from comment #4)
> A picture is not the source.
> But this looks more like a bug in either your inline-asm or how you invoke
> GCC.

Logs after adding -v to GCC:
COLLECT_GCC_OPTIONS= '-mcpu=cortex-m55+nomve.fp' '-v' '-O3' '-D' 'NDEBUG'
'-specs=nano.specs' '-Wall' '-Wformat=0' '-Wno-return-type'
'-Wno-unused-but-set-variable' '-c' '-fdata-sections' '-ffunction-sections'
'-fno-builtin' '-fshort-enums' '-funsigned-char' '-mthumb' '-nostdlib'
'-std=c99' '-g' '-mfloat-abi=soft' '-mcmse' '-Wno-unused-value' '-o'
'CMakeFiles/tfm_spm.dir/cmsis_psa/arch/tfm_arch_v8m_main.o' '-c'
'-mlibarch=armv8.1-m.main+mve' '-march=armv8.1-m.main+mve' 

The same source code can build without error if I enable FP
with
COLLECT_GCC_OPTIONS='-mcpu=cortex-m55' '-v' '-O3' '-D' 'NDEBUG'
'-specs=nano.specs' '-Wall' '-Wformat=0' '-Wno-return-type'
'-Wno-unused-but-set-variable' '-c' '-fdata-sections' '-ffunction-sections'
'-fno-builtin' '-fshort-enums' '-funsigned-char' '-mthumb' '-nostdlib'
'-std=c99' '-g' '-mfloat-abi=hard' '-mfpu=fpv5-d16' '-mcmse'
'-Wno-unused-value' '-o'
'CMakeFiles/tfm_spm.dir/cmsis_psa/arch/tfm_arch_v8m_main.o' '-c'
'-mlibarch=armv8.1-m.main+fp.dp+mve' '-march=armv8.1-m.main+fp.dp+mve'

[Bug target/106442] Build time error "vadd.i32 q3, q3, q0'" in case of -mcpu=cortex-m55+nofp+nomve.fp

[rearnsha at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106442

--- Comment #6 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
possibly a dup of pr101723.  Please try gcc-11.3

[Bug target/106442] Build time error "vadd.i32 q3, q3, q0'" in case of -mcpu=cortex-m55+nofp+nomve.fp

[sherry.zhang2 at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106442

--- Comment #7 from sherry.zhang2 at arm dot com ---
(In reply to Richard Earnshaw from comment #6)
> possibly a dup of pr101723.  Please try gcc-11.3

The latest version I can get is 11.2
https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/downloads.
Has GCC 11.3 been published?

[Bug target/106442] Build time error "vadd.i32 q3, q3, q0'" in case of -mcpu=cortex-m55+nofp+nomve.fp

[rearnsha at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106442

--- Comment #8 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
(In reply to sherry.zhang2 from comment #7)
> (In reply to Richard Earnshaw from comment #6)
> > possibly a dup of pr101723.  Please try gcc-11.3
> 
> The latest version I can get is 11.2
> https://developer.arm.com/tools-and-software/open-source-software/developer-
> tools/gnu-toolchain/downloads. Has GCC 11.3 been published?

https://gcc.gnu.org/pipermail/gcc-announce/2022/000170.html