[Bug libgcj/51500] [4.7 regression] 106 unexpected libjava testsuite failures with mingw32

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51500

--- Comment #12 from Uros Bizjak <ubizjak at gmail dot com> 2012-01-30 16:39:04 UTC ---
(In reply to comment #11)

> +   *(unsigned int*)  &__tramp[24] = 0x8304244c; /* xchgl 4(%esp),%ecx*/ \

Don't use this insn, it implies lock prefix and costs hundreds of cycles.