[Bug optimization/12347] New: [tree-ssa] ICE in expand_expr

[schwab at suse dot de]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12347

           Summary: [tree-ssa] ICE in expand_expr
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Keywords: build
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: schwab at suse dot de
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: ia64-linux

The ICE happens while building libstdc++.  
  
/tmp/cvs/gcc-20030920/Build/gcc/xgcc -shared-libgcc -B/tmp/cvs/gcc-20030920/ 
Build/gcc/ -nostdinc++ -L/tmp/cvs/gcc-20030920/Build/ia64-suse-linux/libstdc+ 
+-v3/src -L/tmp/cvs/gcc-20030920/Build/ia64-suse-linux/libstdc++-v3/src/.libs  
-B/usr/local/ia64-suse-linux/bin/ -B/usr/local/ia64-suse-linux/lib/ -isystem / 
usr/local/ia64-suse-linux/include -isystem /usr/local/ia64-suse-linux/ 
sys-include -I/tmp/cvs/gcc-20030920/Build/ia64-suse-linux/libstdc++-v3/include/ 
ia64-suse-linux -I/tmp/cvs/gcc-20030920/Build/ia64-suse-linux/libstdc++-v3/ 
include -I/tmp/cvs/gcc-20030920/libstdc++-v3/libsupc++ -O2 -g -O2 -g -O2  
-D_GNU_SOURCE -fno-implicit-templates -Wall -Wno-format -W -Wwrite-strings  
-fdiagnostics-show-location=once -ffunction-sections -fdata-sections  
-c ../../../../libstdc++-v3/src/locale-inst.cc  -fPIC -DPIC -o .libs/ 
locale-inst.o  
/tmp/cvs/gcc-20030920/Build/ia64-suse-linux/libstdc++-v3/include/bits/ 
locale_facets.tcc: In  
   member function `_InIter std::money_get<_CharT, _InIter>::do_get(_InIter,   
   _InIter, bool, std::ios_base&, std::_Ios_Iostate&, long double&) const [with   
   _CharT = char, _InIter = std::istreambuf_iterator<char,   
   std::char_traits<char> >]':  
../../../../libstdc++-v3/src/locale-inst.cc:47:   instantiated from here  
/tmp/cvs/gcc-20030920/Build/ia64-suse-linux/libstdc++-v3/include/bits/ 
locale_facets.tcc:1120: internal compiler error: in  
   expand_expr, at expr.c:6893  
Please submit a full bug report,  
with preprocessed source if appropriate.  
See <URL:http://gcc.gnu.org/bugs.html> for instructions.  
make[4]: *** [locale-inst.lo] Error 1  
make[4]: Leaving directory `/tmp/cvs/gcc-20030920/Build/ia64-suse-linux/libstdc 
++-v3/src'  
 
      /* If the mode of DECL_RTL does not match that of the decl, it 
	 must be a promoted value.  We return a SUBREG of the wanted mode, 
	 but mark it so that we know that it was already extended.  */ 
 
      if (GET_CODE (DECL_RTL (exp)) == REG 
	  && GET_MODE (DECL_RTL (exp)) != DECL_MODE (exp)) 
	{ 
	  /* Get the signedness used for this variable.  Ensure we get the 
	     same mode we got when the variable was declared.  */ 
	  if (GET_MODE (DECL_RTL (exp)) 
	      != promote_mode (type, DECL_MODE (exp), &unsignedp, 
			       (TREE_CODE (exp) == RESULT_DECL ? 1 : 0))) 
	    abort (); 
 
	  temp = gen_lowpart_SUBREG (mode, DECL_RTL (exp)); 
	  SUBREG_PROMOTED_VAR_P (temp) = 1; 
	  SUBREG_PROMOTED_UNSIGNED_SET (temp, unsignedp); 
	  return temp; 
	}