Qiu Chaofan 65ae09eeb6 [PowerPC] Fix behavior of rldimi/rlwimi/rlwnm builtins (#85040) ...

rldimi is 64-bit instruction, so the corresponding builtin should not
be available in 32-bit mode. Rotate amount should be in range and
cases when mask is zero needs special handling.

This change also swaps the first and second operands of rldimi/rlwimi
to match previous behavior. For masks not ending at bit 63-SH,
rotation will be inserted before rldimi.

2024-03-18 14:17:16 +08:00

3.7 KiB

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