[Bug target/24982] New: Bootstrap failure with ICE in refers_to_regno_for_reload_p

[Bug target/24982] New: Bootstrap failure with ICE in refers_to_regno_for_reload_p

[kkojima at gcc dot gnu dot org]

The mainline and 4.1 fails to bootstrap on sh4-unknown-linux-gnu with

stage1/xgcc -Bstage1/ -B/usr/gnu/sh4-unknown-linux-gnu/bin/ -c   -g -O2
-DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes
-pedantic -Wno-long-long -Wno-variadic-macros -Wold-style-definition
-Wmissing-format-attribute -Werror -fno-common   -DHAVE_CONFIG_H -I. -I.
-I../../LOCAL/trunk/gcc -I../../LOCAL/trunk/gcc/.
-I../../LOCAL/trunk/gcc/../include -I../../LOCAL/trunk/gcc/../libcpp/include   
 ../../LOCAL/trunk/gcc/fold-const.c -o fold-const.o
../../LOCAL/trunk/gcc/fold-const.c: In function 'fold_binary':
../../LOCAL/trunk/gcc/fold-const.c:9884: internal compiler error: in
refers_to_regno_for_reload_p, at reload.c:6281

Binary search shows that it starts to fail after the patch

r107093 | rth | 2005-11-17 02:23:23 +0900 (Thu, 17 Nov 2005) | 13 lines

is applied.


-- 
           Summary: Bootstrap failure with ICE in
                    refers_to_regno_for_reload_p
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: ice-checking
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: kkojima at gcc dot gnu dot org
 GCC build triplet: sh4-*-linux-gnu
  GCC host triplet: sh4-*-linux-gnu
GCC target triplet: sh4-*-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug target/24982] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[kkojima at gcc dot gnu dot org]

------- Comment #1 from kkojima at gcc dot gnu dot org  2005-11-22 01:12 -------
Created an attachment (id=10317)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10317&action=view)
A reduced testcase


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug target/24982] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[kkojima at gcc dot gnu dot org]

------- Comment #2 from kkojima at gcc dot gnu dot org  2005-11-22 01:17 -------
4.1 and 4.2 fail to compile gcc.c-torture/execute/20040709-[12].c at
-O3 -m4 -ml for sh-elf with the same ICE

internal compiler error: in refers_to_regno_for_reload_p, at reload.c:6281

after the same patch applied.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug target/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Bootstrap failure with ICE  |[4.1/4.2 Regression]
                   |in                          |Bootstrap failure with ICE
                   |refers_to_regno_for_reload_p|in
                   |                            |refers_to_regno_for_reload_p
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug target/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2005-11-23 03:59 -------
This looks related to PR 24995 which is the same ICE on the primary/secondary
target.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|                            |24995


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug target/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[kkojima at gcc dot gnu dot org]

------- Comment #4 from kkojima at gcc dot gnu dot org  2005-11-23 04:55 -------
I've proposed a patch to this PR in

http://gcc.gnu.org/ml/gcc-patches/2005-11/msg01648.html

Does it solve PR 24995?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug target/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[uros at kss-loka dot si]

------- Comment #5 from uros at kss-loka dot si  2005-11-24 10:19 -------
*** Bug 24995 has been marked as a duplicate of this bug. ***


-- 

uros at kss-loka dot si changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
Bug 24982 depends on bug 24995, which changed state.

Bug 24995 Summary: [4.1/4.2 Regression] gcc.dg/vect/vect-10.c fails for -march=athlon
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24995

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug rtl-optimization/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[uros at kss-loka dot si]

------- Comment #6 from uros at kss-loka dot si  2005-11-24 10:24 -------
(In reply to comment #4)
> I've proposed a patch to this PR in
> 
> http://gcc.gnu.org/ml/gcc-patches/2005-11/msg01648.html
> 
> Does it solve PR 24995?

Yes, both i86_64 and -march=athlon failures.


-- 

uros at kss-loka dot si changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rth at gcc dot gnu dot org
  BugsThisDependsOn|24995                       |
                URL|                            |http://gcc.gnu.org/ml/gcc-
                   |                            |patches/2005-
                   |                            |11/msg01648.html
             Status|UNCONFIRMED                 |NEW
          Component|target                      |rtl-optimization
     Ever Confirmed|0                           |1
   GCC host triplet|sh4-*-linux-gnu             |
 GCC target triplet|sh4-*-linux-gnu             |
           Keywords|                            |patch
   Last reconfirmed|0000-00-00 00:00:00         |2005-11-24 10:24:02
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug rtl-optimization/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[rguenth at gcc dot gnu dot org]

------- Comment #7 from rguenth at gcc dot gnu dot org  2005-11-24 12:56 -------
We see a _lot_ of ICEs like this on i686 package builds of f.i. xgl, MPlayer,
openafs...


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug rtl-optimization/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[rguenth at gcc dot gnu dot org]

------- Comment #8 from rguenth at gcc dot gnu dot org  2005-11-24 13:25 -------
The patch seems to fix the failures.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug rtl-optimization/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[uros at kss-loka dot si]

------- Comment #9 from uros at kss-loka dot si  2005-11-24 14:40 -------
Critical, according to comment #7 and #8.


-- 

uros at kss-loka dot si changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |uros at kss-loka dot si
           Severity|normal                      |critical
           Priority|P3                          |P1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug rtl-optimization/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[kargl at gcc dot gnu dot org]

------- Comment #10 from kargl at gcc dot gnu dot org  2005-12-10 04:58 -------
The patch from comment #6 no longer applies.  It appears that this ChangeLog

2005-12-07  J"orn Rennecke <joern.rennecke@st.com>

        * reload.h (reg_equiv_invariant): Declare.
        * reload.c (refers_to_regno_for_reload_p): Allow R to be a pseudo
        register also when reg_equiv_invariant[R] is set.

has included some, but not all of the comment #6 patch.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug rtl-optimization/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[pinskia at gcc dot gnu dot org]

------- Comment #11 from pinskia at gcc dot gnu dot org  2005-12-13 15:10 -------
*** Bug 25393 has been marked as a duplicate of this bug. ***


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |klaue at dresearch dot de


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug rtl-optimization/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[pinskia at gcc dot gnu dot org]

------- Comment #12 from pinskia at gcc dot gnu dot org  2005-12-14 19:56 -------
*** Bug 25420 has been marked as a duplicate of this bug. ***


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pluto at agmk dot net


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug rtl-optimization/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[kkojima at gcc dot gnu dot org]

------- Comment #13 from kkojima at gcc dot gnu dot org  2005-12-20 01:45 -------
Subject: Bug 24982

Author: kkojima
Date: Tue Dec 20 01:45:27 2005
New Revision: 108831

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=108831
Log:
        PR rtl-optimization/24982
        * reload.c (refers_to_regno_for_reload_p): Take
        reg_equiv_invariant and reg_equiv_init into account.
        * reload.h (reg_equiv_invariant): Declare.


Modified:
    branches/gcc-4_1-branch/gcc/ChangeLog
    branches/gcc-4_1-branch/gcc/reload.c
    branches/gcc-4_1-branch/gcc/reload.h


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982

[Bug rtl-optimization/24982] [4.1/4.2 Regression] Bootstrap failure with ICE in refers_to_regno_for_reload_p

[jakub at gcc dot gnu dot org]

------- Comment #14 from jakub at gcc dot gnu dot org  2005-12-20 11:55 -------
This has been fixed on the trunk earlier with Joern's patch and now on
gcc-4_1-branch as well.


-- 

jakub at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24982