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Re: [avr-gcc-list] Use of registers
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From: |
Joerg Wunsch |
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Subject: |
Re: [avr-gcc-list] Use of registers |
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Date: |
Thu, 7 Oct 2004 09:45:59 +0200 (MET DST) |
"Knut.Schwichtenberg" <address@hidden> wrote:
> Is there any option to prevent the compiler to use all registers and
> leave some unused ...
See the FAQ, you gotta bind global variables to registers in the C
compiler. In that case, you do want to create dummy variables you
aren't going to use in the C program itself but only in the assembler
portion.
However, keep in mind that the compiler-generated code will suck more
the less registers the compiler has available for optimization.
--
J"org Wunsch Unix support engineer
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