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2010 Sep 04
6
[LLVMdev] Possible missed optimization?
Hello, while testing trivial functions in my backend i noticed a suboptimal
way of assigning regs that had the following pattern, consider the following
function:
typedef unsigned short t;
t foo(t a, t b)
{
t a4 = b^a^18;
return a4;
}
Argument "a" is passed in R15:R14 and argument "b" is passed in R13:R12, the
return value is stored in R15:R14.
Producing the