Port #39096 - Implementation of CSE for large constants on ARM64 #39883
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Implementation of code size optimization, CSE of large constant for ARM64
We will share a single CSE for constants that differ only in their low 12 bits on ARM64
Config variable: COMPlus_JitConstCSE
// Default 0: enable the CSE of Constants, including nearby offsets. (only for ARM64)
// If 1, disable all the CSE of Constants
// If 2, enable the CSE of Constants but don't combine with nearby offsets. (only for ARM64)
// If 3, enable the CSE of Constants including nearby offsets. (all platforms)
// If 4, enable the CSE of Constants but don't combine with nearby offsets. (all platforms)
//