[Bug tree-optimization/69308] ifcombine joins together floating point expression with side effects

[mtliang at synopsys dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69308

--- Comment #4 from Mike Liang <mtliang at synopsys dot com> ---
The test case passes both a signaling NaN and a quiet NaN through the
expression and FPE is only triggered by the signaling NaN.