Re: [PATCH v2] xtensa: Optimize bitwise splicing operation

2023-01-08 Thread Max Filippov via Gcc-patches
On Sat, Jan 7, 2023 at 9:04 PM Takayuki 'January June' Suwa wrote: > > This patch optimizes the operation of cutting and splicing two register > values at a specified bit position, in other words, combining (bitwise > ORing) bits 0 through (C-1) of the register with bits C through 31 > of the othe

[PATCH v2] xtensa: Optimize bitwise splicing operation

2023-01-07 Thread Takayuki 'January June' Suwa via Gcc-patches
This patch optimizes the operation of cutting and splicing two register values at a specified bit position, in other words, combining (bitwise ORing) bits 0 through (C-1) of the register with bits C through 31 of the other, where C is the specified immediate integer 17 through 31. This typically a