* docs/compiler_faq.pod:

[parrot.git] / PBC_COMPAT

# This file shows the history of incompatible changes to
# Parrot that invalidated existing PBC (Parrot Byte Code) files.
#
# The latest version number of the bytecode format in this file
# is used by Parrot to version the bytecode files it writes and
# is able to read. In the future, Parrot should be able to read
# and/or write older bytecode versions too.
#
# Currently known actions that should be entered here
#   (and invalidate PBC are):
#
# - deleting/changing/inserting existing ops in ops.num
# - changing operands of existing ops
# - adding/deleting/renaming a PMC to classes
# - changes in the packfile format itself
# - changes to any PMCs that are frozen into the .pbc like
#   ParrotInterpreter (HLL_info), Subs and more
# - other core changes that invalidate byte code :)
#
# After changing PBC_COMPAT either disable t/native_pbc tests or
# better, if you have an i386 box at hand, regenerate the PBCs
# with tools/dev/mk_native_pbc and commit the changes

# or TODO much better: all .pbc files should make-depend on PBC_COMPAT

# Also, if you're removing an opcode, be sure to run 
# make -f tools/dev/ops_renum.mak

# please insert tab separated entries at the top of the list

3.13    2008.03.29      chromatic       added does_i_p_pc opcode
3.12    2008.03.26      coke    deleted classoffset
3.11    2008.03.26      coke    deleted getattribute_p_p_i,setattribute_p_p_i
3.10    2007.12.18      coke    deleted print_newline opcode
3.09    2007.12.13      chromatic       added copy_p_p opcode
3.08    2007.12.12      allison added addhandler_p opcode
3.07    2007.12.12      tewk    added die_s die_sc die_p die_pc opcodes
3.06    2007.11.28      coke    remove classname opcode
3.05    2007.10.29      allison         add get_eh, get_all_eh, and count_eh opcodes
3.04    2007.10.28      paultcochrane   remove clear_eh opcode
3.03    2007.10.17      coke            released 0.4.17
3.02    2007.09.20      bernhard        remove opcode hash
3.02    2007.09.07      bernhard        deprecate opcode substr_r
3.01    2007.08.17      chromatic       store HLL names as strings in frozen Sub PMCs
3.0     2007.07.23      jonathan        implementing new PBC header format
2.26    2007.07.17      particle        released 0.4.14
2.25    2007.06.19      allison released 0.4.13
2.24    2007.05.16      bernhard        remove opcodes adddoes, removedoes, singleton
2.23    2007.05.15      chromatic       released 0.4.12
2.22    2007.04.17      mdiep   released 0.4.11
2.21    2007.04.15      jonathan        added get_class opcodes and clone_p_p_p opcode
2.20    2007.04.07      jonathan        added addrole opcode
2.19    2007.03.20      coke    released 0.4.10
2.18    2007.02.22      pmichaud        released 0.4.9
2.17    2007.01.16      particle        released 0.4.8
2.16    2006.12.16      paultcochrane   deleted fetchmethod opcode
2.15    2006.11.14      chip    released 0.4.7
2.14    2006.11.07      tewk    added comp_flags to parrot_sub_t        
2.13    2006.09.23      bernhard        remove ops from dotgnu.ops
2.12    2006.08.18      leo     removed None PMC from parrot core
2.11    2006.08.16      creiss  added STM opcodes
2.10    2006.08.08      chip    released 0.4.6
2.9     2006.06.19      leo     released 0.4.5
2.8     2006.06.18      leo     reorder opcodes
2.7     2006.05.14      leo     released 0.4.4
2.6     2006.04.02      leo     released 0.4.3
2.5     2006.03.21      leo     remove deleted opcodes
2.4     2006.02.22      leo     released 0.4.2
2.3     2006.01.08      leo     released 0.4.1
2.2     2005.12.04      leo     released 0.4.0, deleted opcodes
2.1     2005.12.01      leo     inserted another pic ops
2.0     2005.11.22      leo     changed PBC format (HLL_info)
1.4     2005.11.13      leo     freeze outer_sub with Subs in PBC
1.3     2005.11.12      leo     freeze lex_info with Subs in PBC
1.2     2005.11.06      leo     deleted newsub, foldup, pack; 0.3.1 release
1.1     2005.10.17      leo     deleted register stack opcodes
1.0     2005.10.15      jonathan        changed debug segment format
0.27    2005.10.11      leo     added reg usage to Subs in PBC
0.26    2005.10.07      leo     deleted lot of opcodes
0.25    2005.10.05      leo     deleted rx_ opcodes
0.24    2005.10.01      leo     0.3.0 release
0.23    2005.08.05      leo     0.2.3 release
0.22    2005.07.03      leo     0.2.2 release; add fixedintegerarray.freeze
0.21    2005.06.04      leo     0.2.1 release
0.20    2005.05.31      leo     added HLL_id to frozen sub structure
0.19    2005.05.11      leo     MMD function number change (rm MMD_I_LOGICAL...)
0.18    2005.05.08      leo     0.2.0 release
0.17    2005.04.22      leo     removed add_p_* and friends, insert infix ops
0.16    2005.03.06      leo     0.1.2 release
0.15    2004.11.27      leo     tossed 36 ops: gt,ge,isgt,isge w. I,N,S args
0.14    2004.11.27      leo     tossed 13 ops: forgot some op_n_i
0.13    2004.11.27      leo     tossed 177 ops: constants only, mixed args
0.12    2004.11.11      leo     updates ops.num with some renumbering
0.11    2004.10.09      leo     0.1.1 release
0.10    2004.09.26      leo     insert non-branching compare ops
0.9     2004.09.24      leo     insert interpinfo_p opcodes
0.8     2004.02.29      leo     0.1.0 release
0.7     2003.11.21      leo     remove unused size fields in front of PF constants
0.6     2003.10.31      leo     0.0.13 release
0.5     2003.10.24      dan     add bogus opcode
0.4     2003.10.24      leo     start using this file for fingerprinting
0.3     2003.10.22      dan     add delegates.pmc
0.2     2003.10.21      dan     delete instantiate op
0.1     2003.10.21      leo     start this file