Re: [PATCH v2] RISC-V: Enable Hoist to GCSE simple constants

On 8/24/23 23:16, Vineet Gupta wrote: Hoist want_to_gcse_p () calls rtx_cost () to compute max distance for hoist candidates. For a simple const (say 6 which needs seperate insn "LI 6") backend currently returns 0, causing Hoist to bail and elide GCSE. Note that constants requiring more than

[PATCH v2] RISC-V: Enable Hoist to GCSE simple constants

Hoist want_to_gcse_p () calls rtx_cost () to compute max distance for hoist candidates. For a simple const (say 6 which needs seperate insn "LI 6") backend currently returns 0, causing Hoist to bail and elide GCSE. Note that constants requiring more than 1 insns to setup were working fine since