[Bug middle-end/50868] New: [4.7 Regression] 1x176.gcc in SPEC CPU 2000 failed to build with LTO

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50868

             Bug #: 50868
           Summary: [4.7 Regression] 1x176.gcc in SPEC CPU 2000 failed to
                    build with LTO
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hjl.tools@gmail.com
                CC: hubicka@gcc.gnu.org


On Linux/x86, revision 180302 failed to build 1x176.gcc in SPEC CPU 2000
with LTO:

gcc -O3 -funroll-loops -ffast-math -fwhole-program -flto=jobserver
-fuse-linker-plugin  c-parse.o c-lang.o c-lex.o c-pragma.o c-decl.o c-typeck.o
c-convert.o c-aux-info.o c-common.o c-iterate.o toplev.o version.o tree.o
print-tree.o stor-layout.o fold-const.o function.o stmt.o expr.o calls.o
expmed.o explow.o optabs.o varasm.o rtl.o print-rtl.o rtlanal.o emit-rtl.o
real.o dbxout.o sdbout.o dwarfout.o xcoffout.o integrate.o jump.o cse.o loop.o
unroll.o flow.o stupid.o combine.o regclass.o local-alloc.o global.o reload.o
reload1.o caller-save.o insn-peep.o reorg.o sched.o final.o recog.o reg-stack.o
insn-opinit.o insn-recog.o insn-extract.o insn-output.o insn-emit.o
insn-attrtab.o m88k.o getpwd.o convert.o bc-emit.o bc-optab.o obstack.o   -lm 
-o cc1
..
lto1: internal compiler error: in inline_small_functions, at ipa-inline.c:1413
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: gcc returned 1 exit status
/usr/local/bin/ld: lto-wrapper failed
collect2: error: ld returned 1 exit status

Revision 180168 is OK. It may be caused by revision 180247:

http://gcc.gnu.org/ml/gcc-cvs/2011-10/msg00843.html

and revision 180249:

http://gcc.gnu.org/ml/gcc-cvs/2011-10/msg00845.html

doesn't fix it.