R-alpha/R-beta builds on Alpha platform failing with compiler error

Per https://buildd.debian.org/build.php?pkg=r-base, we see the Alpha platform
having trouble with deriv.c :

gcc     -I. -I../../src/include -I../../src/include  -DHAVE_CONFIG_H  -mieee-with-inexact -fpic  -std=gnu99 -O3 -pipe  -g -c deriv.c -o deriv.o
deriv.c: In function 'simplify':
deriv.c:267: error: unrecognizable insn:
(insn 2103 64 65 9 ../../src/include/Rinlinedfuns.h:86 (set (reg:DI 2 $2)
        (const:DI (plus:DI (label_ref:DI 68)
                (const_int 24 [0x18])))) -1 (insn_list:REG_LABEL_OPERAND 68 (nil)))
deriv.c:267: internal compiler error: in extract_insn, at recog.c:2001
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.3/README.Bugs> for instructions.
make[4]: *** [deriv.o] Error 1

This could of course be a bug in gcc.  Does anybody have insights into
anything that may have changed here? 

I think it is by definition a bug in gcc...

It is usually rather hopeless to work around this sort of issue by 
source code changes. Have you tried reducing the optimization level?

Dirk

O__  ---- Peter Dalgaard             ?ster Farimagsgade 5, Entr.B
   c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
  (*) \(*) -- University of Copenhagen   Denmark      Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)              FAX: (+45) 35327907

| > Per https://buildd.debian.org/build.php?pkg=r-base, we see the Alpha platform
| > having trouble with deriv.c :
| > 
| > gcc     -I. -I../../src/include -I../../src/include  -DHAVE_CONFIG_H  -mieee-with-inexact -fpic  -std=gnu99 -O3 -pipe  -g -c deriv.c -o deriv.o
| > deriv.c: In function 'simplify':
| > deriv.c:267: error: unrecognizable insn:
| > (insn 2103 64 65 9 ../../src/include/Rinlinedfuns.h:86 (set (reg:DI 2 $2)
| >         (const:DI (plus:DI (label_ref:DI 68)
| >                 (const_int 24 [0x18])))) -1 (insn_list:REG_LABEL_OPERAND 68 (nil)))
| > deriv.c:267: internal compiler error: in extract_insn, at recog.c:2001
| > Please submit a full bug report,
| > with preprocessed source if appropriate.
| > See <file:///usr/share/doc/gcc-4.3/README.Bugs> for instructions.
| > make[4]: *** [deriv.o] Error 1
| > 
| > This could of course be a bug in gcc.  Does anybody have insights into
| > anything that may have changed here? 
| 
| I think it is by definition a bug in gcc...
| 
| It is usually rather hopeless to work around this sort of issue by 
| source code changes. Have you tried reducing the optimization level?

No, not yet. Let me try that for the next beta. Change made.

Dirk

Three out of two people have difficulties with fractions.

| | > Per https://buildd.debian.org/build.php?pkg=r-base, we see the Alpha platform
| | > having trouble with deriv.c :
| | > 
| | > gcc     -I. -I../../src/include -I../../src/include  -DHAVE_CONFIG_H  -mieee-with-inexact -fpic  -std=gnu99 -O3 -pipe  -g -c deriv.c -o deriv.o
| | > deriv.c: In function 'simplify':
| | > deriv.c:267: error: unrecognizable insn:
| | > (insn 2103 64 65 9 ../../src/include/Rinlinedfuns.h:86 (set (reg:DI 2 $2)
| | >         (const:DI (plus:DI (label_ref:DI 68)
| | >                 (const_int 24 [0x18])))) -1 (insn_list:REG_LABEL_OPERAND 68 (nil)))
| | > deriv.c:267: internal compiler error: in extract_insn, at recog.c:2001
| | > Please submit a full bug report,
| | > with preprocessed source if appropriate.
| | > See <file:///usr/share/doc/gcc-4.3/README.Bugs> for instructions.
| | > make[4]: *** [deriv.o] Error 1
| | > 
| | > This could of course be a bug in gcc.  Does anybody have insights into
| | > anything that may have changed here? 
| | 
| | I think it is by definition a bug in gcc...
| | 
| | It is usually rather hopeless to work around this sort of issue by 
| | source code changes. Have you tried reducing the optimization level?
| 
| No, not yet. Let me try that for the next beta. Change made.

And tested on one the Alpha machines available to Debian -- it does build
with -O2 so that's what the next upload will use.

Dirk

Three out of two people have difficulties with fractions.