GCC memregs
number
-memregs=
for the current file. Use with care! This pragma must be before any function in the file, and mixing different memregs values in different objects may make them incompatible. This pragma is useful when a performance-critical function uses a memreg for temporary values, as it may allow you to reduce the number of memregs used. ADDRESS
name address
1234H
numeric syntax is not supported (use 0x1234
instead). Example: #pragma ADDRESS port3 0x103 char port3;
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Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-5.4.0/gcc/M32C-Pragmas.html