[Bug target/56866] gcc 4.7.x/gcc-4.8.x with '-O3 -march=bdver2' misscompiles glibc-2.17/crypt/sha512.c

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56866



--- Comment #8 from Mikael Pettersson <mikpe at it dot uu.se> 2013-04-14 
15:55:32 UTC ---

OK, I can confirm that compiling glibc-2.17 with gcc-4.7.3 -O3 -march=bdver1

causes the sha512 test to fail, but without "-march=bdver1" it doesn't fail.



I also saw regressions in math/test-float.out, math/test-double.out,

math/test-ifloat.out, math/test-idouble.out, nptl/tst-cond25.out, and

rt/tst-cpuclock2.out.