[AArch64][2/3] Recognise rev16 operations on SImode and DImode data
* config/aarch64/aarch64.md (rev16<mode>2): New pattern.
(rev16<mode>2_alt): Likewise.
* config/aarch64/aarch64.c (aarch64_rtx_costs): Handle rev16 case.
* config/arm/aarch-common.c (aarch_rev16_shright_mask_imm_p): New.
(aarch_rev16_shleft_mask_imm_p): Likewise.
(aarch_rev16_p_1): Likewise.
(aarch_rev16_p): Likewise.
* config/arm/aarch-common-protos.h (aarch_rev16_p): Declare extern.
(aarch_rev16_shright_mask_imm_p): Likewise.
(aarch_rev16_shleft_mask_imm_p): Likewise.
* gcc.target/aarch64/rev16_1.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@209704
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