Re: [BUILDROBOT] [Ada] error: alignment of array elements is greater than element size (was: [PATCH] GIMPLE store merging pass)

[Markus Trippelsdorf]

On 2016.10.29 at 19:56 +0200, Jan-Benedict Glaw wrote:
> Hi Kyrill!
> 
> On Mon, 2016-10-24 15:56:48 +0100, Kyrill Tkachov 
>  wrote:
> > This is a slight update over [1] with Richard's feedback addressed.
> > In terminate_all_aliasing_chains we now terminate the chain early if
> > the destination is writing to a base offset by a variable amount.
> > This avoids walking the store chain and performing more alias checks.
> [...]
> > Bootstrapped and tested on aarch64, arm, x86_64.
> 
> I'm getting build failures when Ada is enabled (ie. --disable-multilib
> --enable-languages=all,ada,go), my build robot found it (see build
> http://toolchain.lug-owl.de/buildbot/show_build_details.php?id=648226
> for example):

This is already fixed by Jakub's r241679.

-- 
Markus

[BUILDROBOT] [Ada] error: alignment of array elements is greater than element size (was: [PATCH] GIMPLE store merging pass)

[Jan-Benedict Glaw]

Hi Kyrill!

On Mon, 2016-10-24 15:56:48 +0100, Kyrill Tkachov  
wrote:
> This is a slight update over [1] with Richard's feedback addressed.
> In terminate_all_aliasing_chains we now terminate the chain early if
> the destination is writing to a base offset by a variable amount.
> This avoids walking the store chain and performing more alias checks.
[...]
> Bootstrapped and tested on aarch64, arm, x86_64.

I'm getting build failures when Ada is enabled (ie. --disable-multilib
--enable-languages=all,ada,go), my build robot found it (see build
http://toolchain.lug-owl.de/buildbot/show_build_details.php?id=648226
for example):

[...]
/home/jbglaw/src/toolchain/build/./gcc/xgcc 
-B/home/jbglaw/src/toolchain/build/./gcc/ 
-B/home/jbglaw/src/toolchain/install/x86_64-pc-linux-gnu/bin/ 
-B/home/jbglaw/src/toolchain/install/x86_64-pc-linux-gnu/lib/ -isystem 
/home/jbglaw/src/toolchain/install/x86_64-pc-linux-gnu/include -isystem 
/home/jbglaw/src/toolchain/install/x86_64-pc-linux-gnu/sys-include-c -g -O2 
 -fpic  -W -Wall -gnatpg -nostdinc   a-teioed.adb -o a-teioed.o
a-teioed.adb: In function ‘Ada.Text_Io.Editing.Format_Number’:
a-teioed.adb:127:4: error: alignment of array elements is greater than element 
size
a-teioed.adb:127:4: error: alignment of array elements is greater than element 
size
a-teioed.adb:127:4: error: alignment of array elements is greater than element 
size
a-teioed.adb:127:4: error: alignment of array elements is greater than element 
size
a-teioed.adb:127:4: error: alignment of array elements is greater than element 
size
a-teioed.adb:127:4: error: alignment of array elements is greater than element 
size
a-teioed.adb:127:4: error: alignment of array elements is greater than element 
size
a-teioed.adb:127:4: error: alignment of array elements is greater than element 
size
a-teioed.adb:127:4: error: alignment of array elements is greater than element 
size
a-teioed.adb: In function ‘Ada.Text_Io.Editing.To_Picture’:
a-teioed.adb:2724:4: error: alignment of array elements is greater than element 
size
a-teioed.adb: In function ‘Ada.Text_Io.Editing.Valid’:
a-teioed.adb:2751:4: error: alignment of array elements is greater than element 
size
make[7]: *** [a-teioed.o] Error 1
make[7]: Leaving directory `/home/jbglaw/src/toolchain/build/gcc/ada/rts'
make[6]: *** [gnatlib] Error 2
make[6]: Leaving directory `/home/jbglaw/src/toolchain/build/gcc/ada'
make[5]: *** [gnatlib-shared-default] Error 2
make[5]: Leaving directory `/home/jbglaw/src/toolchain/build/gcc/ada'
make[4]: *** [gnatlib-shared-dual] Error 2
make[4]: Leaving directory `/home/jbglaw/src/toolchain/build/gcc/ada'
make[3]: *** [gnatlib-shared] Error 2
make[3]: Leaving directory `/home/jbglaw/src/toolchain/build/gcc/ada'
make[2]: *** [gnatlib-shared] Error 2
make[2]: Leaving directory 
`/home/jbglaw/src/toolchain/build/x86_64-pc-linux-gnu/libada'
make[1]: *** [all-target-libada] Error 2
make[1]: Leaving directory `/home/jbglaw/src/toolchain/build'
make: *** [all] Error 2


I bisected it down to this commit, though I don't know if it caused or
uncovered the issue.

MfG, JBG

-- 
  Jan-Benedict Glaw  jbg...@lug-owl.de  +49-172-7608481


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