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Example for optimizing non-strict programs using combo.
[libfirm]
/
ir
/
be
/
test
/
codegen
/
crafty.c
1
int first_ones[256];
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int FirstOne(unsigned long long arg1)
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{
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union doub {
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unsigned short i[4];
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unsigned long long d;
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};
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union doub x;
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x.d=arg1;
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if (x.i[3])
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return (first_ones[x.i[3]]);
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if (x.i[2])
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return (first_ones[x.i[2]]+16);
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if (x.i[1])
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return (first_ones[x.i[1]]+32);
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if (x.i[0])
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return (first_ones[x.i[0]]+48);
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return(64);
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}