1b758925ad
createReplacementInstr was a trivial wrapper around ConstantExpr::getAsInstruction, which also inserted the new instruction into a basic block. Implement this directly in getAsInstruction by adding an InsertBefore parameter and change all callers to use it. NFC. A follow-up patch will remove createReplacementInstr. Differential Revision: https://reviews.llvm.org/D112791
To-do ----- * Instruction encodings * Tailcalls * Investigate loop alignment * Add builtins