On 2016-10-25 14:36, Stefam Koch wrote:

First perf data is in

The is measured with time src/dmd -c -ctfe-bc

old interpreter (without -ctfe-bc) :

real    0m6.839s
user    0m6.423s
sys    0m0.407s

new interpreter (-ctfe-bc)

real    0m0.549s
user    0m0.547s
sys    0m0.000s

LLVM Backend (-ctfe-bc -version=UseLLVMBackend) :

real    0m0.039s
user    0m0.027s
sys    0m0.010s

The compiled code was :
int bug6498(int x)
    int n = 0;
    while (n < x)
    return n;
static assert(bug6498(10_000_000)==10_000_000);

Very impressive :)

/Jacob Carlborg

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