[Bug target/21571] New: ICE in rs6000.c with -msdata=default.

[Bug target/21571] New: ICE in rs6000.c with -msdata=default.

[osv at javad dot ru]

osv@falcon$ cat test.cc
double zero;
void foo() { zero = 0; }
osv@falcon$ ppc-eabi-gcc -c test.cc
osv@falcon$ ppc-eabi-gcc -v -msdata=default -c test.cc
Using built-in specs.
Target: ppc-eabi
Configured with: ../../gcc/configure --prefix=/home/osv/try/ppc-rtems/tools
--target=ppc-eabi --disable-haifa --disable-newlib-hw-fp --with-gnu-as
--with-gnu-ld -with-newlib --with-cpu=505
Thread model: single
gcc version 4.0.1 20050513 (prerelease)
 /home/osv/try/ppc-rtems/tools/libexec/gcc/ppc-eabi/4.0.1/cc1plus -quiet -v
test.cc -quiet -dumpbase test.cc -msdata=default -mcpu=505 -auxbase test
-version -o /tmp/cc4MGHes.s
ignoring nonexistent directory
"/home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.0.1/../../../../ppc-eabi/sys-include"
#include "..." search starts here:
#include <...> search starts here:
 /home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.0.1/../../../../include/c++/4.0.1
 /home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.0.1/../../../../include/c++/4.0.1/ppc-eabi
 /home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.0.1/../../../../include/c++/4.0.1/backward
 /home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.0.1/include
 /home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.0.1/../../../../ppc-eabi/include
End of search list.
GNU C++ version 4.0.1 20050513 (prerelease) (ppc-eabi)
	compiled by GNU C version 2.95.4 20011002 (Debian prerelease).
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64501
test.cc: In function 'void foo()':
test.cc:2: internal compiler error: in find_addr_reg, at
config/rs6000/rs6000.c:17603
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
osv@falcon$

-- 
           Summary: ICE in rs6000.c with -msdata=default.
           Product: gcc
           Version: 4.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: osv at javad dot ru
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: powerpc-eabi


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[osv at javad dot ru]

------- Additional Comments From osv at javad dot ru  2005-06-22 16:00 -------
Reproducible on 4.1.0 (mainline) by adding -ffast-math to the command-line:

$ ppc-eabi-gcc -v -msdata=default -ffast-math -c test.cc -o test.o
Using built-in specs.
Target: ppc-eabi
Configured with: ../../gcc/configure --prefix=/home/osv/try/ppc-rtems/tools
--target=ppc-eabi --disable-haifa --disable-newlib-hw-fp --with-gnu-as
--with-gnu-ld -with-newlib --with-cpu=505
Thread model: single
gcc version 4.1.0 20050620 (experimental)
 /home/osv/try/ppc-rtems/tools/libexec/gcc/ppc-eabi/4.1.0/cc1plus -quiet -v
test.cc -quiet -dumpbase test.cc -msdata=default -mcpu=505 -auxbase-strip test.o
-version -ffast-math -o /tmp/ccM8Vbir.s
ignoring nonexistent directory
"/home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.1.0/../../../../ppc-eabi/sys-include"
#include "..." search starts here:
#include <...> search starts here:
 /home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.1.0/../../../../include/c++/4.1.0
 /home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.1.0/../../../../include/c++/4.1.0/ppc-eabi
 /home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.1.0/../../../../include/c++/4.1.0/backward
 /home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.1.0/include
 /home/osv/try/ppc-rtems/tools/lib/gcc/ppc-eabi/4.1.0/../../../../ppc-eabi/include
End of search list.
GNU C++ version 4.1.0 20050620 (experimental) (ppc-eabi)
	compiled by GNU C version 2.95.4 20011002 (Debian prerelease).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 53cb6b81161433cf05f625e722038621
test.cc: In function 'void foo()':
test.cc:2: internal compiler error: in find_addr_reg, at
config/rs6000/rs6000.c:16845
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Compilation exited abnormally with code 1 at Wed Jun 22 19:58:09


In case it helps to debug the problem, here is the insn that causes the ICE:

(insn 9 32 10 (set (mem/i:DF (symbol_ref:SI ("zero") [flags 0x6] <var_decl
0x401dcf68 zero>) [0 zero+0 S8 A64])
        (reg:DF 9 %r9 [118])) 350 {*movdf_hardfloat32} (nil)
    (nil))

... and here is stack backtrace:

#0  fancy_abort (file=0x89c7b60 "../../../gcc/gcc/config/rs6000/rs6000.c", 
    line=16845, function=0x89cefcd "find_addr_reg")
    at ../../../gcc/gcc/diagnostic.c:588
#1  0x08727607 in find_addr_reg (addr=0x40143e60)
    at ../../../gcc/gcc/config/rs6000/rs6000.c:16845
#2  0x08541701 in output_350 (operands=0x8a011a0, insn=0x401bf140)
    at ../../../gcc/gcc/config/rs6000/rs6000.md:7726
#3  0x08457c69 in get_insn_template (code=350, insn=0x401bf140)
    at ../../../gcc/gcc/final.c:1584
#4  0x08458c65 in final_scan_insn (insn=0x401bf140, file=0x8a7cc38, 
    optimize=0, nopeepholes=0, seen=0xbfffe690)
    at ../../../gcc/gcc/final.c:2385
#5  0x08457b85 in final (first=0x401bc200, file=0x8a7cc38, optimize=0)
    at ../../../gcc/gcc/final.c:1569
#6  0x086c916c in rest_of_handle_final () at ../../../gcc/gcc/passes.c:293
#7  0x086cbb26 in rest_of_compilation () at ../../../gcc/gcc/passes.c:1747
#8  0x08275f83 in execute_one_pass (pass=0x89ea220)
    at ../../../gcc/gcc/tree-optimize.c:629
#9  0x0827608c in execute_pass_list (pass=0x89ea220)
    at ../../../gcc/gcc/tree-optimize.c:666
#10 0x08276600 in tree_rest_of_compilation (fndecl=0x401de074)
    at ../../../gcc/gcc/tree-optimize.c:829
#11 0x0819a260 in expand_body (fn=0x401de074)
    at ../../../gcc/gcc/cp/semantics.c:3018
#12 0x0872f12e in cgraph_expand_function (node=0x401de414)
    at ../../../gcc/gcc/cgraphunit.c:968
#13 0x0872f3c4 in cgraph_expand_all_functions ()
    at ../../../gcc/gcc/cgraphunit.c:1034
#14 0x0872f9a0 in cgraph_optimize () at ../../../gcc/gcc/cgraphunit.c:1168
#15 0x08119d72 in cp_finish_file () at ../../../gcc/gcc/cp/decl2.c:3104
#16 0x08049d3f in finish_file () at ../../../gcc/gcc/cp/cp-lang.c:113
#17 0x08239dad in c_common_parse_file (set_yydebug=0)
    at ../../../gcc/gcc/c-opts.c:1119
#18 0x0867e3e3 in compile_file () at ../../../gcc/gcc/toplev.c:966
#19 0x0867fb58 in do_compile () at ../../../gcc/gcc/toplev.c:1902
#20 0x0867fbc5 in toplev_main (argc=16, argv=0xbfffea14)
    at ../../../gcc/gcc/toplev.c:1934
#21 0x08247e96 in main (argc=16, argv=0xbfffea14) at ../../../gcc/gcc/main.c:35

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
  GCC build triplet|i686-pc-linux-gnu           |
   GCC host triplet|i686-pc-linux-gnu           |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[oakad at yahoo dot com]

------- Additional Comments From oakad at yahoo dot com  2005-06-27 13:43 -------
I also have this bug with gcc-4.0.0 (powerpc-eabi on cygwin). It always happens 
when msdata flag is present (eabi or sysv - same result). It is caused by the 
attempt to initialize a global float/double variable with a constant, like this:
//----
float a;
void foo() { a=0; } - gcc crashes
//----
I worked round this problem for now with a code:
//----
float f_zero=0; //putting "const float" here will make gcc crash
float a;
void foo() { a=f_zero; }
//----

I consider this a severe bug. It does not depends on optimization level or on 
other options as far as I checked (only on msdata).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[osv at javad dot ru]

------- Additional Comments From osv at javad dot ru  2005-06-29 18:21 -------
Created an attachment (id=9174)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9174&action=view)
Makes the ICE go away.

Though this patch does fix the ICE and the resulting assembly is valid, I'm not
sure it's the right way to fix the problem due to my limited experience with
gcc internals.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[osv at javad dot ru]

------- Additional Comments From osv at javad dot ru  2005-07-01 14:46 -------
Created an attachment (id=9188)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9188&action=view)
Fixes symmetric case as well

Though previous patch fixes this particular PR, I've encountered similar ICE in
symmetric case (load from memory to GPRs), so this patch fixes both cases.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
Attachment #9174 is|0                           |1
           obsolete|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[amodra at bigpond dot net dot au]

------- Additional Comments From amodra at bigpond dot net dot au  2005-08-22 00:39 -------
confirmed on current mainline and 4.0 branch.  A powerpc-linux targetted
compiler hits the ICE when given -ffast-math -mcall-eabi -msdata=default.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-08-22 00:39:05
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[amodra at bigpond dot net dot au]

------- Additional Comments From amodra at bigpond dot net dot au  2005-08-22 03:08 -------
Regression introduced 2004-06-22  Dale Johannesen,
http://gcc.gnu.org/ml/gcc-patches/2004-06/msg01583.html.  Testing a fix that
uses legitimate_small_data_p instead of Sergei's more liberal change.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |amodra at bigpond dot net
                   |dot org                     |dot au
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[amodra at bigpond dot net dot au]

------- Additional Comments From amodra at bigpond dot net dot au  2005-08-22 10:05 -------
http://gcc.gnu.org/ml/gcc-patches/2005-08/msg01277.html

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch
      Known to work|                            |3.4.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-08-23 02:40 -------
Subject: Bug 21571

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	amodra@gcc.gnu.org	2005-08-23 02:40:02

Modified files:
	gcc/config/rs6000: rs6000-protos.h rs6000.c rs6000.md 

Log message:
	PR target/21571
	* config/rs6000/rs6000.c (rs6000_legitimate_small_data_p): Rename
	from legitimate_small_data_p, and make global.  Update use.
	Remove forward declaration.
	* config/rs6000/rs6000-protos.h (rs6000_legitimate_small_data_p):
	Declare.
	* config/rs6000/rs6000.md (movdf_hardfloat32): Allow small data mems.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000-protos.h.diff?cvsroot=gcc&r1=1.106&r2=1.107
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.c.diff?cvsroot=gcc&r1=1.861&r2=1.862
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.md.diff?cvsroot=gcc&r1=1.401&r2=1.402



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-08-23 03:00 -------
Subject: Bug 21571

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	amodra@gcc.gnu.org	2005-08-23 02:59:37

Modified files:
	gcc            : ChangeLog 
	gcc/config/rs6000: rs6000.c rs6000-protos.h rs6000.md 

Log message:
	PR target/21571
	* config/rs6000/rs6000.c (rs6000_legitimate_small_data_p): Rename
	from legitimate_small_data_p, and make global.  Update use.
	Remove forward declaration.
	* config/rs6000/rs6000-protos.h (rs6000_legitimate_small_data_p):
	Declare.
	* config/rs6000/rs6000.md (movdf_hardfloat32): Allow small data mems.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.383&r2=2.7592.2.384
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.788.2.8&r2=1.788.2.9
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000-protos.h.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.92.10.1&r2=1.92.10.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.md.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.350.2.2&r2=1.350.2.3



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[amodra at bigpond dot net dot au]

------- Additional Comments From amodra at bigpond dot net dot au  2005-08-23 03:07 -------
Fixed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571

[Bug target/21571] ICE in rs6000.c with -msdata=default.

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.0.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21571