commit 8460bb981bb821656f7bd54a7d5f647a7a9ff400
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date: Wed, 8 Feb 2012 09:53:22 +0100
Initial commit
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| A | README | | | 23 | +++++++++++++++++++++++ |
1 file changed, 23 insertions(+), 0 deletions(-)
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+This is the kcc compiler, a one very stupid non retargetable compiler
+for z80. This compiler is intended to be very simple and suitable for
+running in small machines (like MSX for example), and let almost part
+of optimizations for the programmer.
+
+After a lot of years seeing compilers for z80 I notice that it is very
+hard for a C compiler generates a good code for a 8 bit processor like
+z80, with a expensive indirect addressing mode, so the best solution
+is don't try that compiler optimize the code and use C as a macro
+macro assembler.
+
+In order to get this last, we need a compiler that does exactly the
+things we want to do. For example is a variable is register it MUST be
+register and fails in other case. If a variable is automatic try to
+realize operations directly with the stack (for example use ADD
+A,(IX+4), instead of allocate the variable into register add and store
+again in memory). So if you declare an automatic variable you are a
+big bullshit or you need it for recursion (static variables are your
+friends).
+
+This is the reason why I begin to develop this compiler, and I hope
+it will be useful for you.
+\ No newline at end of file
