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ARM Assembly code - doubt.
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ARM Assembly code - doubt.
vasanthfriend vasanthfriend
over 12 years ago
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Simon Craske
over 12 years ago
Note: This was originally posted on 4th August 2009 at
http://forums.arm.com
Both armcc (--cpu=arm926ej-s) and gcc (-mcpu=arm926ej-s -O1) will happily compile the appropriate C code to a single SMLAL instruction, e.g.:
long long my_smlal(long long acc, int x, int y)
{
return acc + (long long)x * y;
}
i.e. there shouldn't be any need to resort to assembly here.
hth
s.
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Simon Craske
over 12 years ago
Note: This was originally posted on 4th August 2009 at
http://forums.arm.com
Both armcc (--cpu=arm926ej-s) and gcc (-mcpu=arm926ej-s -O1) will happily compile the appropriate C code to a single SMLAL instruction, e.g.:
long long my_smlal(long long acc, int x, int y)
{
return acc + (long long)x * y;
}
i.e. there shouldn't be any need to resort to assembly here.
hth
s.
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