diff options
Diffstat (limited to 'gcc/config/avr/avr.opt')
| -rw-r--r-- | gcc/config/avr/avr.opt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/config/avr/avr.opt b/gcc/config/avr/avr.opt index 1128dd3..277b600 100644 --- a/gcc/config/avr/avr.opt +++ b/gcc/config/avr/avr.opt @@ -61,3 +61,7 @@ Relax branches mpmem-wrap-around Target Report Make the linker relaxation machine assume that a program counter wrap-around occurs. + +mstrict-X +Target Report Var(avr_strict_X) Init(0) +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. |