llvm-project

6e49f738 - Reland [llvm] Add support for llvm IR atomicrmw fminimum/fmaximum instructions (#137701)

Reland [llvm] Add support for llvm IR atomicrmw fminimum/fmaximum instructions (#137701) This patch adds support for LLVM IR atomicrmw `fmaximum` and `fminimum` instructions. These mirror the `llvm.maximum.*` and `llvm.minimum.*` instructions, but are atomic and use IEEE754 2019 handling for NaNs, which is different to `fmax` and `fmin`. See: https://llvm.org/docs/LangRef.html#llvm-minimum-intrinsic for more details. Future changes will allow this LLVM IR to be lowered to specialised assembler instructions on suitable targets, such as AArch64.