Use subroutines for function prologues and epilogues
This option affects how functions save and restore registers on entry and exit. See
Call-prologues Option.
Change the stack pointer without disabling interrupts
This option controls whether interrupts should be disabled when the stack pointer is
changed. See No-interrupts Option.
Default char type is unsigned
This option controls the signedness used for a plain char. See
Signed-char Option.
Default bitfield type is unsigned
This option controls the signedness used for a plain int bit-field.
See Signed-char Option.
Use CCI
Selecting this option indicates that source code should conform to the Common C
Interface. See Ext Option.
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