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Subject: [Bug target/46779] wrong code generation for array access
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46779

--- Comment #7 from Georg-Johann Lay <avr at gjlay dot de> 2011-02-24 13:58:58 UTC ---
Created attachment 23453
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23453
Simpler example without #include

Slightly simpler test case, compile with

avr-gcc -S -Os -mmcu=atmega128 pr46779-1.c

Pass .subreg1 emits subregs as Lvalues with the same pseudo as SUBREG_REG so
that the second insn ovewrwrites the first.

Target: avr
Configured with: /gnu/source/gcc.gnu.org/branches/gcc-4_4-branch/configure
--target=avr --prefix=/home/georg/gcc/install/gcc-4.4 --enable-languages=c,c++
--disable-libssp --disable-libada --disable-nls --disable-shared
Thread model: single
gcc version 4.4.6 20110222 (prerelease) (GCC)
[...]
GNU C (GCC) version 4.4.6 20110222 (prerelease) (avr)
        compiled by GNU C version 4.3.2 [gcc-4_3-branch revision 141291], GMP
version 4.3.1, MPFR version 2.4.2.