[llvm] Add support for atomic instruction on floating-point numbers (PR #81683)

[Vyacheslav Levytskyy via llvm-commits]

VyacheslavLevytskyy wrote:

SPIR-V Tests failing isn't something connected with the PR, but an unrelated general error:

`[2277/2903] Performing download step for 'SPIRVTools'
FAILED: tools/spirv-tools/SPIRVTools-prefix/src/SPIRVTools-stamp/SPIRVTools-download /mnt/build/tools/spirv-tools/SPIRVTools-prefix/src/SPIRVTools-stamp/SPIRVTools-download 
cd /mnt/build/tools/spirv-tools/SPIRVTools-prefix/src && git clone https://github.com/KhronosGroup/SPIRV-Tools.git SPIRVTools && cd SPIRVTools && /__t/Python/3.11.8/x64/bin/python3 utils/git-sync-deps && /usr/bin/cmake -E touch /mnt/build/tools/spirv-tools/SPIRVTools-prefix/src/SPIRVTools-stamp/SPIRVTools-download
/bin/sh: 1: git: not found`

https://github.com/llvm/llvm-project/pull/81683