[llvm-dev] Comparing results of math function calls

[Dávid Bolvanský via llvm-dev]

Hello,

Code:

int f1(int a, int b) {
    return sqrt(a) > sqrt(b);
}

int f2(int a, int b) {
    return a > b;
}

Possibly, under -ffast-math (to ignore NaNs), f1 could be transformed to f2
variant.

Also a transformation could support sin and tan, and reverse comparison for
cos.

Suggestions?

Thanks
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