b1f67fbca0
Improvements:
- use registers more efficiently
- eliminate some register copies and stack manipulations
- promote left operands to right immediate operands
- improve simple assignments to auto/static vars
- use bltz, blez, bgtz, bgez
- change mul/divu (by powers of 2) to sll/srl/and
- use seb, seh for sign extension instead of sll/sra
- overall generate a bit tighter, faster and more readable asm code
Fixes:
- >>= should be unsigned when the left operand is unsigned int.
The right operand isn't important here.
- very subtle bug in e.g. void f(){int a; &a+1;/*wrong value of &a+1*/}
Other:
- include stdarg.c and skeleton.c in /share/example/Makefile
21 lines
309 B
Makefile
21 lines
309 B
Makefile
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all: ashello echo chello stdarg skeleton
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ashello: ashello.o
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$(LD) ashello.o -o $@
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chello: chello.o
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$(CC) chello.o -o $@
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echo: echo.o
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$(LD) $@.o -o $@
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stdarg: stdarg.o
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$(CC) stdarg.o -o $@
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skeleton: skeleton.o
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$(CC) skeleton.o -o $@
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clean:
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rm -f *.o ashello echo chello stdarg skeleton *.dis *~
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