Re: GCC 9.5 Release Candidate available

[Iain Sandoe <iain@sandoe.co.uk>]

Hi Richard,

> On 23 May 2022, at 07:27, Richard Biener <rguenther@suse.de> wrote:
> 
> On Sun, 22 May 2022, Iain Sandoe wrote:
> 
>> Hi
>> 
>>> On 20 May 2022, at 09:02, Richard Biener via Gcc <gcc@gcc.gnu.org> wrote:
>> 
>>> The first release candidate for GCC 9.5 is available from
>>> 
>>> https://sourceware.org/pub/gcc/snapshots/9.5.0-RC-20220520/
>>> 
>>> and shortly its mirrors.  It has been generated from git commit
>>> 1bc79c506205b6a5db82897340bdebaaf7ada934.
>>> 
>>> I have so far bootstrapped and tested the release candidate
>>> on x86_64-suse-linux.
>> 
>> I have bootstrapped (using GCC5.4 on darwin9 and GCC7.5 elsewhere) r9-10192 on:
>> i686-darwin9,17
>> powerpc-darwin9
>> x86_64-darwin10 to 21.
>> 
>> As, expected (since I was not able to find enough time to do the backports),
>> although bootstrap succeeds on darwin21 (macOS 12) the resulting compiler
>> is not really usable.  I will have to provide a darwin branch with the necessary
>> changes.
>> 
>> One observation outside of this:
>> 
>> Several of the testsuite runs hung with cc1 spinning in reload for pr88414.
>> I was not really able to correlate exactly with CPU / tuning chosen.
>> 
>> Pretty sure this is a regression - I do not recall the testsuite hanging (for anything
>> other than D) for years.
> 
> That's gcc.target/i386/pr88414.c?
> 
> Can you be more specific on the target the issue occurs on (so one
> can maybe try with a cross?).  Bisecting would be most helpful of
> course, if it's some of the recent backports reversion would be
> most appropriate at this point.

several cases, here’s the most modern with an m32 multilib:

Configured with: /src-local/gcc-git-9/configure --prefix=/opt/iains/x86_64-apple-darwin17/gcc-9-wip --build=x86_64-apple-darwin17 --with-sysroot=/Library//Developer/CommandLineTools/SDKs/MacOSX.sdk --with-as=/XC/9.4/usr/bin/as --with-ld=/XC/9.4/usr/bin/ld --enable-languages=all CC=x86_64-apple-darwin17-gcc CXX=x86_64-apple-darwin17-g++

log info:

[ note the m64 multilib, also emits the diagnostic, but it does not appear to spin. ]

/scratch/10-13-his/gcc-9-wip/gcc/xgcc -B/scratch/10-13-his/gcc-9-wip/gcc/ /src-local/gcc-git-9/gcc/testsuite/gcc.target/i386/pr88414.c -m32 -fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers -fdiagnostics-color=never -O1 -ftrapv -S -o pr88414.s
/src-local/gcc-git-9/gcc/testsuite/gcc.target/i386/pr88414.c: In function 'foo':
/src-local/gcc-git-9/gcc/testsuite/gcc.target/i386/pr88414.c:15:7: error: 'asm' operand has impossible constraints
 got a INT signal, interrupted by user // (manually killed it)

Iain