[Bug rtl-optimization/50001] New: [alpha]: ICE in reload_combine_note_use, at postreload.c:1538

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50001

           Summary: [alpha]: ICE in reload_combine_note_use, at
                    postreload.c:1538
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ubizjak@gmail.com
            Target: alphaev68-unknown-linux-gnu


Created attachment 24930
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24930
Profiler file

Currently g++.dg/tree-prof/partition1.C ICEs during -fprofile-use compile using
attached gcda file:

FAIL: g++.dg/tree-prof/partition1.C compilation,  -g  -fprofile-use (internal
compiler error)
UNRESOLVED: g++.dg/tree-prof/partition1.C execution,    -g  -fprofile-use
FAIL: g++.dg/tree-prof/partition1.C compilation,  -O0  -fprofile-use (internal
compiler error)
UNRESOLVED: g++.dg/tree-prof/partition1.C execution,    -O0  -fprofile-use
FAIL: g++.dg/tree-prof/partition1.C compilation,  -O1  -fprofile-use (internal
compiler error)
UNRESOLVED: g++.dg/tree-prof/partition1.C execution,    -O1  -fprofile-use
FAIL: g++.dg/tree-prof/partition1.C compilation,  -O2  -fprofile-use (internal
compiler error)
UNRESOLVED: g++.dg/tree-prof/partition1.C execution,    -O2  -fprofile-use
FAIL: g++.dg/tree-prof/partition1.C compilation,  -O3  -fprofile-use (internal
compiler error)
UNRESOLVED: g++.dg/tree-prof/partition1.C execution,    -O3  -fprofile-use
FAIL: g++.dg/tree-prof/partition1.C compilation,  -O3 -g  -fprofile-use
(internal compiler error)
UNRESOLVED: g++.dg/tree-prof/partition1.C execution,    -O3 -g  -fprofile-use
FAIL: g++.dg/tree-prof/partition1.C compilation,  -Os  -fprofile-use (internal
compiler error)
UNRESOLVED: g++.dg/tree-prof/partition1.C execution,    -Os  -fprofile-use


~/gcc-build-alpha/gcc/cc1plus -O2 -freorder-blocks-and-partition -fprofile-use
-w -quiet partition1.C
partition1.C: In function ‘void foo()’:
partition1.C:46:1: internal compiler error: in reload_combine_note_use, at
postreload.c:1538
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


(gdb) up
#1  0x000000000092a808 in reload_combine_note_use (xp=<optimized out>, 
    insn=0x7ffff1a197e0, ruid=3, containing_mem=<optimized out>)
    at ../../gcc-svn/trunk/gcc/postreload.c:1538
1538        gcc_assert (regno < FIRST_PSEUDO_REGISTER);
(gdb) bt
#0  fancy_abort (file=0xdb5b58 "../../gcc-svn/trunk/gcc/postreload.c", 
    line=1538, function=0xdb6050 "reload_combine_note_use")
    at ../../gcc-svn/trunk/gcc/diagnostic.c:892
#1  0x000000000092a808 in reload_combine_note_use (xp=<optimized out>, 
    insn=0x7ffff1a197e0, ruid=3, containing_mem=<optimized out>)
    at ../../gcc-svn/trunk/gcc/postreload.c:1538
#2  0x000000000092a5e7 in reload_combine_note_use (xp=<optimized out>, 
    insn=0x7ffff1a197e0, ruid=3, containing_mem=0x7ffff1a17288)
    at ../../gcc-svn/trunk/gcc/postreload.c:1600
#3  0x000000000092a5a5 in reload_combine_note_use (xp=<optimized out>, 
    insn=0x7ffff1a197e0, ruid=3, containing_mem=0x0)
    at ../../gcc-svn/trunk/gcc/postreload.c:1604
#4  0x000000000092bb3f in reload_combine ()
    at ../../gcc-svn/trunk/gcc/postreload.c:1384
#5  0x000000000092ca1e in reload_cse_regs (first=0x7ffff19e06c0)
    at ../../gcc-svn/trunk/gcc/postreload.c:72

The problem can be triggered with a c++ crosscompiler to
--target=alphaev68-pc-linux-gnu.