Remove unused routines. Remove 2-parameter versions of Init_Alignment and friends. Replace calls with direct calls to Set_Alignment and friends. These routines aren't really doing anything worth an extra abstraction.
Change remaining Init_ routines to Reinit_, because these are not usually being used to initialize. Reinit_Alignment correctly calls Reinit_Field_To_Zero. The other two (Reinit_Esize and Reinit_RM_Size) are still setting the field to Uint_0; this will be changed to Reinit_Field_To_Zero later. Add Copy_Esize and Copy_RM_Size, not yet implemented. These will be implemented when Reinit_Esize and Reinit_RM_Size are corrected. Tested on x86_64-pc-linux-gnu, committed on trunk gcc/ada/ * einfo-utils.ads, einfo-utils.adb, fe.h, einfo.ads, gen_il-fields.ads: Remove unused and no-longer-used routines. Move related routines together. Rewrite incorrect documentation, and documentation that will be incorrect when e.g. Esize-related routines are fixed. Remove unused field Normalized_Position_Max. * cstand.adb, exp_pakd.adb, freeze.adb, gen_il-gen-gen_entities.adb, itypes.adb, layout.adb, sem_ch10.adb, sem_ch12.adb, sem_ch13.adb, sem_ch3.adb, sem_ch7.adb, sem_ch8.adb, sem_ch9.adb, sem_prag.adb, sem_util.adb, ttypes.ads: Update calls to routines removed from or renamed in Einfo.Utils. * uintp.ads (Upos): Fix this subtype, which was unintentionally declared to include Uint_0.
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