1 ; Options for the ATMEL AVR port of the compiler.
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5 ; This file is part of GCC.
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22 Target Report Mask(CALL_PROLOGUES)
23 Use subroutines for function prologues and epilogues
26 Target RejectNegative Joined Var(avr_mcu_index) Init(0) Enum(avr_mcu)
27 -mmcu=MCU Select the target MCU
30 Target Report Undocumented Mask(ALL_DEBUG)
33 Target RejectNegative Joined Undocumented Var(avr_log_details)
36 Target Report Mask(INT8)
37 Use an 8-bit 'int' type
40 Target Report RejectNegative Mask(NO_INTERRUPTS)
41 Change the stack pointer without disabling interrupts
44 Target Report Undocumented Mask(ORDER_1)
47 Target Report Undocumented Mask(ORDER_2)
50 Target Report Mask(SHORT_CALLS)
51 Use rjmp/rcall (limited range) on >8K devices
54 Target Report Mask(TINY_STACK)
55 Change only the low 8 bits of the stack pointer
63 Make the linker relaxation machine assume that a program counter wrap-around occurs.
66 Target Report Var(avr_strict_X) Init(0)
67 When accessing RAM, use X as imposed by the hardware, i.e. just use pre-decrement, post-increment and indirect addressing with the X register. Without this option, the compiler may assume that there is an addressing mode X+const similar to Y+const and Z+const and emit instructions to emulate such an addressing mode for X.