MPIR-2.5.1 doesn't compile with GCC-4.7.0 on ia64

[Jeroen Demeyer]

On ia64 systems, MPIR-2.5.1 fails to compile with GCC-4.7.0:

$ uname -a
Linux cleo 2.6.18-128.1.1.el5 #1 SMP Mon Jan 26 13:57:09 EST 2009 ia64
ia64 ia64 GNU/Linux

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/local/gcc-4.7.0/ia64-Linux-rhel/libexec/gcc/ia64-unknown-linux-gnu/4.7.0/lto-wrapper
Target: ia64-unknown-linux-gnu
Configured with: /usr/local/gcc-4.7.0/src/gcc-4.7.0/configure
--enable-languages=c,c++,fortran --with-gnu-as
--with-as=/usr/local/binutils-2.22/ia64-Linux-rhel-gcc-4.6.2/bin/as
--with-gnu-ld
--with-ld=/usr/local/binutils-2.22/ia64-Linux-rhel-gcc-4.6.2/bin/ld
--with-gmp=/usr/local/mpir-2.5.1/ia64-Linux-rhel-gcc-4.6.2
--with-mpfr=/usr/local/mpfr-3.1.0/ia64-Linux-rhel-mpir-2.5.1-gcc-4.6.2
--with-mpc=/usr/local/mpc-0.9/ia64-Linux-rhel-mpir-2.5.1-mpfr-3.1.0-gcc-4.6.2
--prefix=/usr/local/gcc-4.7.0/ia64-Linux-rhel
Thread model: posix
gcc version 4.7.0 (GCC)

$ ./configure && make
checking build system type... ia64-unknown-linux-gnu
checking host system type... ia64-unknown-linux-gnu
[...]
/bin/sh ../libtool --tag=CC --mode=compile gcc -std=gnu99
-DHAVE_CONFIG_H -I. -I.. -D__GMP_WITHIN_GMP -I.. -DOPERATION_`echo
divrem_eucl
idean_r_1 | sed 's/_$//'` -O2 -c -o divrem_euclidean_r_1.lo
divrem_euclidean_r_1.c
libtool: compile: gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I..
-D__GMP_WITHIN_GMP -I.. -DOPERATION_divrem_euclidean_r_1 -O2 -c
divrem_euclidea
n_r_1.c -fPIC -DPIC -o .libs/divrem_euclidean_r_1.o
divrem_euclidean_r_1.c: In function '__gmpn_mod_1_k':
divrem_euclidean_r_1.c:157:5: error: 'asm' operand requires impossible
reload
make[2]: *** [divrem_euclidean_r_1.lo] Error 1
make[2]: Leaving directory `/home/jdemeyer/cleo/mpir-2.5.1/mpn'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/jdemeyer/cleo/mpir-2.5.1'
make: *** [all] Error 2

Full log is attached.

[Bill Hart]

This error seems to occur when compiling the .c file. Yet the
complaint is about the generated assembly. My first reaction is that
this is a compiler bug and should be reported to the GCC folks.

It does seem to have detected the processor correctly.

Unfortunately this file is not in GMP. However, one should be able to
verify that it is a compiler issue by compiling a previous version of
MPIR that contained this file. As we know MPIR compiled fine with
previous GCC releases on that platform, this should give us good
confidence that it is indeed the compiler.

Bill.

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[Jeroen Demeyer]

On 2012-03-28 11:18, Bill Hart wrote:
> However, one should be able to
> verify that it is a compiler issue by compiling a previous version of
> MPIR that contained this file.

I don't see why that is relevant, but anyway:

* MPIR-2.1.3 fails, same error

* MPIR-1.3.1 fails, same error

* MPIR-1.0 fails, similar error in a different file:

/bin/sh ../libtool --tag=CC --mode=compile gcc -std=gnu99

-DHAVE_CONFIG_H -I. -I. -I.. -D__GMP_WITHIN_GMP -I.. -DOPERATION_`echo
sqr_basecase | sed 's/_$//'` -O3 -c -o sqr_basecase.lo sqr_basecase.c
gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I. -I.. -D__GMP_WITHIN_GMP -I..
-DOPERATION_sqr_basecase -O3 -c sqr_basecase.c -fPIC -DPIC -o
.libs/sqr_basecase.o
sqr_basecase.c: In function '__gmpn_sqr_basecase':
sqr_basecase.c:268:5: error: 'asm' operand requires impossible reload
sqr_basecase.c:268:5: error: 'asm' operand requires impossible reload

* GMP-5.0.4 also fails:

/bin/sh ../libtool --tag=CC --mode=compile gcc -std=gnu99
-DHAVE_CONFIG_H -I. -I.. -D__GMP_WITHIN_GMP -I.. -DOPERATION_`echo

dcpi1_div_qr | sed 's/_$//'` -O2 -pedantic -mtune=itanium2 -c -o
dcpi1_div_qr.lo dcpi1_div_qr.c

libtool: compile: gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I..

-D__GMP_WITHIN_GMP -I.. -DOPERATION_dcpi1_div_qr -O2 -pedantic
-mtune=itanium2 -c dcpi1_div_qr.c -fPIC -DPIC -o .libs/dcpi1_div_qr.o
dcpi1_div_qr.c: In function '__gmpn_dcpi1_div_qr':
dcpi1_div_qr.c:141:8: error: 'asm' operand requires impossible reload

[Jeroen Demeyer]

Could be this:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52657

[Bill Hart]

I think 1.3.1 is about the version this file was added. But the fact
that a similar error shows up in a different file strongly implies it
is a compiler bug.

Bill.

On 28 March 2012 10:43, Jeroen Demeyer <jdem...@cage.ugent.be> wrote:
> Could be this:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52657
>

[Bill Hart]

Yes, that looks like it.

On 28 March 2012 10:43, Jeroen Demeyer <jdem...@cage.ugent.be> wrote:

> Could be this:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52657
>

[leif]

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

So it's clearly not related to the /MPIR/ version.

-leif

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[Bill Hart]

Excellent!