When you compile attached testcase with 4.1.1 and 4.2.1, resulting .o modules
have following sizes:

$ size insmod.i-411.o insmod.i-421.o
   text    data     bss     dec     hex filename
    288       0       0     288     120 insmod.i-411.o
    543       0       0     543     21f insmod.i-421.o

Testcase was built using following command line:

gcc -std=gnu99 \
-Os -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer \
-ffunction-sections -fdata-sections -fno-guess-branch-probability \
-funsigned-char -static-libgcc \
-falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 \
-march=i386 -mpreferred-stack-boundary=2 \
-fverbose-asm -S insmod.i.c


-- 
           Summary: -Os generated code grew almost twice 4.2.1 versus 4.1.1
           Product: gcc
           Version: 4.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: vda dot linux at googlemail dot com
 GCC build triplet: i386-pc-linux-gnu
  GCC host triplet: i386-pc-linux-gnu
GCC target triplet: i386-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33136

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