[Bug lto/66752] spec2000 255.vortex performance compiled with GCC is ~20% lower than with CLANG

[ysrumyan at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66752

--- Comment #4 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
Created attachment 35947
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35947&action=edit
test-case to reproduce

compile with -Ofast -m32 -march=slm and notice redundant test
.L30:
        testl   %edx, %edx
        je      .L1