Hi, I am trying following transformation in X86 selection dag. lhs = rhs; // lhs and rhs are f32 => if(rhs == 0.0) lhs = rhs; else lhs = rhs'; i.e. conditionally replace rhs by rhs'. I guess it can be done using ISD::SELECT node(for float values)? In that case I have to create a condition node. Can you please suggest/refer to how to do so? You may please suggest alternatives. Note that I want to perform this transformation on the selection dag during target lowering and hence prefer not to create any basicblock+instruction. Thanks in advance. Best Regards, soham "The search for truth is more precious than its possession." -------------- next part -------------- A non-text attachment was scrubbed... Name: winmail.dat Type: application/ms-tnef Size: 6955 bytes Desc: not available URL: <lists.llvm.org/pipermail/llvm-dev/attachments/20130917/90d44f5f/attachment.bin>