https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104424
--- Comment #2 from Swaroop Tekale <swaroop.tekale at se dot com> --- It seems to be there on or before gcc-3.3.6: https://gcc.gnu.org/onlinedocs/gcc-3.3.6/gcc/Option-Summary.html#Option-Summary Code Generation Options See Options for Code Generation Conventions. -fcall-saved-reg -fcall-used-reg -ffixed-reg -fexceptions -fnon-call-exceptions -funwind-tables -fasynchronous-unwind-tables -finhibit-size-directive -finstrument-functions -fno-common -fno-ident -fno-gnu-linker -fpcc-struct-return -fpic -fPIC -freg-struct-return -fshared-data -fshort-enums -fshort-double -fshort-wchar -fvolatile -fvolatile-global -fvolatile-static -fverbose-asm -fpack-struct -fstack-check -fstack-limit-register=reg -fstack-limit-symbol=sym -fargument-alias -fargument-noalias -fargument-noalias-global -fleading-underscore -ftls-model=model -ftrapv -fbounds-check
