[wip] adjust target model to support 5x4 #2296

Job	Run time
ubuntu-20.04 llvm assert=ON rtti=ON	5m 43s
ubuntu-20.04 llvm assert=ON rtti=OFF	5m 41s
ubuntu-20.04 llvm assert=OFF rtti=ON	5m 50s
ubuntu-20.04 llvm assert=OFF rtti=OFF	5m 55s
ubuntu-20.04 gcc assert=ON rtti=ON	5m 17s
ubuntu-20.04 gcc assert=ON rtti=OFF	5m 14s
ubuntu-20.04 gcc assert=OFF rtti=ON	6m 7s
ubuntu-20.04 gcc assert=OFF rtti=OFF	5m 47s
ubuntu-22.04 llvm assert=ON rtti=ON	5m 15s
ubuntu-22.04 llvm assert=ON rtti=OFF	5m 13s
ubuntu-22.04 llvm assert=OFF rtti=ON	5m 20s
ubuntu-22.04 llvm assert=OFF rtti=OFF	5m 30s
ubuntu-22.04 gcc assert=ON rtti=ON	5m 7s
ubuntu-22.04 gcc assert=ON rtti=OFF	5m 9s
ubuntu-22.04 gcc assert=OFF rtti=ON	4m 57s
ubuntu-22.04 gcc assert=OFF rtti=OFF	5m 20s
macos-12 llvm assert=ON rtti=ON	7m 47s
macos-12 llvm assert=ON rtti=OFF	9m 15s
macos-12 llvm assert=OFF rtti=ON	8m 6s
macos-12 llvm assert=OFF rtti=OFF	8m 2s
windows-2019 msvc assert=ON rtti=ON	6m 8s
windows-2019 msvc assert=ON rtti=OFF	7m 1s
windows-2019 msvc assert=OFF rtti=ON	8m 41s
windows-2019 msvc assert=OFF rtti=OFF	11m 19s
	2h 33m 44s

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