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From: "Bernhard.Rosenkranzer at linaro dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/55642] New: [4.8 Regression] Invalid thumb code generated ("thumb conditional instruction should be in IT block")
Date: Mon, 10 Dec 2012 17:24:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55642

             Bug #: 55642
           Summary: [4.8 Regression] Invalid thumb code generated ("thumb
                    conditional instruction should be in IT block")
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: Bernhard.Rosenkranzer@linaro.org


Created attachment 28914
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28914
Test case (not yet reduced)

Building the attached preprocessed code with -std=gnu++11 -O2 -mthumb
-mcpu=cortex-a9 results in errors from the assembler:

[bero@localhost grouper-4.2.1-gcc-4.8 (master)]$
/opt/android-toolchain-trunk/bin/arm-linux-androideabi-g++ -std=gnu++11 -o
ARMAsmParser.o -O2 -mthumb  -mcpu=cortex-a9 -c ARMAsmParser.i 
/tmp/ccKYPdeC.s: Assembler messages:
/tmp/ccKYPdeC.s:7949: Error: thumb conditional instruction should be in IT
block -- `subne r2,r2,r3,asr#31'
/tmp/ccKYPdeC.s:21058: Error: thumb conditional instruction should be in IT
block -- `subne r2,r2,r3,asr#31'