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ba1536dac7
Simplify, refactor and improve various move immediate functions. Allow 32-bit MOVN/I as a valid 64-bit immediate which removes special cases in aarch64_internal_mov_immediate. Add new constraint so the movdi pattern only needs a single alternative for move immediate. gcc/ * config/aarch64/aarch64.cc (aarch64_bitmask_imm): Use unsigned type. (aarch64_is_mov_xn_imm): New function. (aarch64_move_imm): Refactor, assert mode is SImode or DImode. (aarch64_internal_mov_immediate): Assert mode is SImode or DImode. Simplify special cases. (aarch64_uimm12_shift): Simplify code. (aarch64_clamp_to_uimm12_shift): Likewise. (aarch64_movw_imm): Rename to aarch64_is_movz. (aarch64_float_const_rtx_p): Pass either SImode or DImode to aarch64_internal_mov_immediate. (aarch64_rtx_costs): Likewise. * config/aarch64/aarch64.md (movdi_aarch64): Merge 'N' and 'M' constraints into single 'O'. (mov<mode>_aarch64): Likewise. * config/aarch64/aarch64-protos.h (aarch64_move_imm): Use unsigned. (aarch64_bitmask_imm): Likewise. (aarch64_uimm12_shift): Likewise. (aarch64_is_mov_xn_imm): New prototype. * config/aarch64/constraints.md: Add 'O' for 32/64-bit immediates, limit 'N' to 64-bit only moves.
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