https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49358
H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Known to work| |5.3.1, 6.0 Target Milestone|6.0 |4.9.4 Summary|[4.9/5/6 Regression] RA |[4.9 Regression] RA |regressed for SSE 2 operand |regressed for SSE 2 operand |math |math --- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> --- -O2 with GCC 5.3 and 6 generate: movapd %xmm0, %xmm1 mulsd %xmm0, %xmm1 mulsd %xmm0, %xmm1 mulsd %xmm1, %xmm0 ret