[Bug middle-end/52375] New: [4.7 Regression] internal compiler error: in extract_insn, at recog.c:2123 at -O3 -mfpu=neon

[Bernhard.Rosenkranzer at linaro dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52375

             Bug #: 52375
           Summary: [4.7 Regression] internal compiler error: in
                    extract_insn, at recog.c:2123 at -O3 -mfpu=neon
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: bernhard.rosenkran...@linaro.org


Created attachment 26744
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26744
Preprocessed source (not yet reduced)

$ /opt/android-toolchain-4.7/bin/arm-linux-androideabi-g++ -march=armv7-a
-mfloat-abi=softfp -mfpu=neon -O3 -o Input.o -c Input.i
frameworks/base/libs/ui/Input.cpp: In member function 'void
android::VelocityTracker::addMovement(const android::MotionEvent*)':
frameworks/base/libs/ui/Input.cpp:866:1: error: unrecognizable insn:
(insn 71 70 72 9 (set (reg:V4SI 271)
        (lshiftrt:V4SI (reg:V4SI 272)
            (subreg:V4SI (reg:OI 250 [ vect_array.1112 ]) 0)))
frameworks/base/include/utils/BitSet.h:36 -1
     (nil))
frameworks/base/libs/ui/Input.cpp:866:1: internal compiler error: in
extract_insn, at recog.c:2123


Reducing the optimization level to -O2 or omitting -mfpu=neon allows the
compile to proceed.