Support return type alloc prop #9263

	name: C/C++ CI

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	merge_group:

	jobs:
	build:
	name: Integration CI LLVM ${{ matrix.llvm }} ${{ matrix.build }} ${{ matrix.os }}
	runs-on: ${{ matrix.os }}

	strategy:
	fail-fast: false
	matrix:
	llvm: ["15", "16", "17", "18"]
	build: ["Release"] # "RelWithDebInfo"
	os: [ubuntu-20.04]

	timeout-minutes: 45

	steps:
	- name: add llvm
	run: \|
	wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key\|sudo apt-key add -
	sudo apt-get install -y libmpfr-dev
	sudo apt-add-repository "deb http://apt.llvm.org/`lsb_release -c \| cut -f2`/ llvm-toolchain-`lsb_release -c \| cut -f2`-${{ matrix.llvm }} main" \|\| true
	sudo apt-get install -y cmake gcc g++ llvm-${{ matrix.llvm }}-dev libomp-${{ matrix.llvm }}-dev lld-${{ matrix.llvm }} clang-${{ matrix.llvm }} libclang-${{ matrix.llvm }}-dev libeigen3-dev libboost-dev libzstd-dev
	sudo python3 -m pip install --upgrade pip lit
	- uses: actions/checkout@v4
	- name: mkdir
	run: rm -rf build && mkdir build
	- name: cmake
	working-directory: build
	run: cmake ../enzyme -DLLVM_EXTERNAL_LIT=`which lit` -DCMAKE_BUILD_TYPE=${{ matrix.build }} -DLLVM_DIR=/usr/lib/llvm-${{ matrix.llvm }}/lib/cmake/llvm
	- name: make
	run: cd build && make -j `nproc` LLVMEnzyme-${{ matrix.llvm }} ClangEnzyme-${{ matrix.llvm }} LLDEnzyme-${{ matrix.llvm }}
	- name: make test-cmake
	working-directory: build
	run: make -j `nproc` test-cmake
	- name: make check-enzyme-integration
	working-directory: build
	run: make -j `nproc` check-enzyme-integration

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