missed fold: (X * 0.0) * constant => X * 0.0 #85241
Description
https://alive2.llvm.org/ce/z/bKDTJd
https://godbolt.org/z/v1qYrb5Ka
define float @src(float %0) { entry: %1 = fmul float %0, 0.000000e+00 %2 = fmul float %1, 3.000000e+00 ret float %2 } define float @tgt(float %0) { entry: %1 = fmul float %0, 0.000000e+00 ret float %1 }