Re: llvm10 build failure on Rpi3

From: Mark Millard via freebsd-ports <freebsd-ports_at_freebsd.org>
Date: Wed, 23 Jun 2021 08:34:55 UTC 
On 2021-Jun-22, at 22:09, bob prohaska <fbsd at www.zefox.net> wrote:

> Attempts to compile devel/llvm10 on a RPi3 under poudriere using
> poudriere bulk -J 2 -j main devel/llvm10 > bulk.log &
> are failing with:
> 
> In file included from /wrkdirs/usr/ports/devel/llvm10/work/llvm-10.0.1.src/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp:45:
> lib/Target/AMDGPU/AMDGPUGenGlobalISel.inc:11138:50: error: expected expression
>        /*GIM_CheckRegBankForClass: @2779096485*/, /*MI*/0, /*Op*/1, /*RC*//*AMDGPU::SReg_64RegClassID: @2779096485*/,
>                                                 ^
> lib/Target/AMDGPU/AMDGPUGenGlobalISel.inc:11138:118: error: expected expression
>        /*GIM_CheckRegBankForClass: @2779096485*/, /*MI*/0, /*Op*/1, /*RC*//*AMDGPU::SReg_64RegClassID: @2779096485*/,
>                                                                                                                     ^
> lib/Target/AMDGPU/AMDGPUGenGlobalISel.inc:11237:48: error: expected expression
>      /*GIM_CheckRegBankForClass: @2779096485*/, /*MI*/0, /*Op*/0, /*RC*//*AMDGPU::VGPR_32RegClassID: @2779096485*/,
>                                               ^
> lib/Target/AMDGPU/AMDGPUGenGlobalISel.inc:11237:116: error: expected expression
>      /*GIM_CheckRegBankForClass: @2779096485*/, /*MI*/0, /*Op*/0, /*RC*//*AMDGPU::VGPR_32RegClassID: @2779096485*/,
>                                                                                                                   ^
> 4 errors generated.
> 
> Not sure if this is an ARM problem, a poudriere problem or an llvm10 problem.
> It looks like an llvm10 problem to my eye.
> 
> The logfile is visible at
> http://www.zefox.org/~bob/poudriere/data/logs/bulk/latest-per-pkg/llvm10/10.0.1_5/main-default.log
> and the rest of the /usr/local/poudriere tree can be browsed as well. The
> config files have links at the top directory.
> 
> The ports tree has been updated between attempts, if I'm reading the
> poudriere-ports man page correctly those updates should be in effect.
> If I'm not a hint how to update would be much appreciated. Ports live
> in /usr/ports, owned by root. 
> 
> The goal of the enterprise is to compile www/chromium, which has worked
> in the (distant) past using make. 
> 

Not that it helps much, but: 2779096485 == 0xA5A5A5A5

It appears that such somehow was involved-in/generated by:

[ 24% 1326/5364] cd /wrkdirs/usr/ports/devel/llvm10/work/.build && /wrkdirs/usr/ports/devel/llvm10/work/.build/bin/llvm-tblgen -gen-global-isel -I /wrkdirs/usr/ports/devel/llvm10/work/llvm-10.0.1.src/lib/Target/AMDGPU -I /wrkdirs/usr/ports/devel/llvm10/work/llvm-10.0.1.src/include -I /wrkdirs/usr/ports/devel/llvm10/work/llvm-10.0.1.src/lib/Target /wrkdirs/usr/ports/devel/llvm10/work/llvm-10.0.1.src/lib/Target/AMDGPU/AMDGPUGISel.td --write-if-changed -o lib/Target/AMDGPU/AMDGPUGenGlobalISel.inc -d lib/Target/AMDGPU/AMDGPUGenGlobalISel.inc.d

and that lead to the commented out notation in the output, with the "@2779096485" listed in the comment as well.


===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)